HP Inc
HP IncActive Patents
0
Total Holdings
301
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| EP1069487A1 | Automated diagnosis of printer systems using bayesian netwo… | Expired / Lapsed | 2000-07-03 | — | 10 | Details |
| EP0895187A2 | A method for scaling an image | Expired / Lapsed | 1998-07-27 | — | 10 | Details |
| EP0891061A2 | Method and system for link level server/switch trunking | Expired / Lapsed | 1998-07-07 | — | 12 | Details |
| EP0869640A1 | Intermittently connectable electronic device with unique id… | Expired / Lapsed | 1998-03-19 | — | 10 | Details |
| EP0838768A2 | Web interfacing device | Expired / Lapsed | 1997-09-24 | — | 10 | Details |
| EP0822499A1 | Sequential process event system analyzer tool | Expired / Lapsed | 1997-07-31 | — | 10 | Details |
| EP0814416A2 | Match and match address signal generation in a content addr… | Expired / Lapsed | 1997-06-09 | — | 8 | Details |
| EP0810755A2 | Method for enhancing operation of a network management syst… | Expired / Lapsed | 1997-01-16 | — | 10 | Details |
| EP0780777A1 | Indexing of recordings | Expired / Lapsed | 1996-12-12 | — | 13 | Details |
| EP0833479A1 | Contention resolution process for data networks | Expired / Lapsed | 1996-09-27 | — | 17 | Details |
| EP0736827A2 | Security administration for electronic data processing | Expired / Lapsed | 1996-03-05 | — | 15 | Details |
| EP0697801A2 | Fibre channel on ATM | Expired / Lapsed | 1995-07-11 | — | 1 | Details |
| EP0740037A1 | Security device | Expired / Lapsed | 1995-04-28 | — | 11 | Details |
| EP0700186A1 | Method and apparatus for regulating virtual-channel cell tr… | Expired / Lapsed | 1994-08-31 | — | 12 | Details |
| EP0637027A2 | Detecting scene cuts in video processing | Expired / Lapsed | 1994-07-25 | — | 7 | Details |
| EP0680173A1 | Multicasting apparatus | Expired / Lapsed | 1994-04-28 | — | 12 | Details |
| EP0680235A1 | Channel identifier generation | Expired / Lapsed | 1994-04-28 | — | 12 | Details |
| EP0620523A2 | Adaptive method for allocation of random access memory to p… | Expired / Lapsed | 1993-11-18 | — | 7 | Details |
| EP0575132A1 | Optical measuring device | Expired / Lapsed | 1993-06-14 | — | 13 | Details |
| EP0574140A1 | Network adapter which places a network header and data in s… | Expired / Lapsed | 1993-05-14 | — | 10 | Details |
| EP0531889A2 | Data processing system and method for automatically perform… | Expired / Lapsed | 1992-09-03 | — | 10 | Details |
| EP0509297A1 | Transesophageal ultrasound probe | Expired / Lapsed | 1992-03-27 | — | 6 | Details |
| EP0500222A1 | Method for reconciling entries in a plurality of schedules | Expired / Lapsed | 1992-01-29 | — | 19 | Details |
| EP0514584A2 | Transducer positioning system | Expired / Lapsed | 1991-08-30 | — | 9 | Details |
| EP0475581A2 | Method and apparatus for window sharing between computer di… | Expired / Lapsed | 1991-08-06 | — | 10 | Details |
| EP0465011A2 | Method of encoding an E-mail address in a fax message and r… | Expired / Lapsed | 1991-06-06 | — | 11 | Details |
| EP0456249A2 | System for integrating application programs in a heterogene… | Expired / Lapsed | 1991-05-10 | — | 13 | Details |
| EP0434231A2 | Paging accessory for portable computing devices | Expired / Lapsed | 1990-11-23 | — | 13 | Details |
| EP0477448A1 | Network monitoring device and system | Expired / Lapsed | 1990-09-28 | — | 12 | Details |
| EP0419013A2 | Apparatus and method for computer-aided design of sheet met… | Expired / Lapsed | 1990-07-27 | — | 20 | Details |
| EP0399649A2 | Microprocessor controlled universal video monitor | Expired / Lapsed | 1990-04-18 | — | 25 | Details |
| EP0377299A2 | An encapsulation system for a computer system | Expired / Lapsed | 1989-12-20 | — | 25 | Details |
| EP0426911A1 | Routing management in computer networks | Expired / Lapsed | 1989-11-06 | — | 7 | Details |
| EP0354706A2 | Ink flow control system and method for an ink jet printer | Expired / Lapsed | 1989-08-01 | — | 6 | Details |
| EP0317325A2 | Forensic sample tracking system and print station therefor | Expired / Lapsed | 1988-11-17 | — | 12 | Details |
| EP0310360A2 | Data communication method and apparatus | Expired / Lapsed | 1988-09-29 | — | 22 | Details |
| EP0292136A1 | Method and process for testing the reliability of integrate… | Expired / Lapsed | 1988-04-29 | — | 17 | Details |
| EP0265106A2 | Method and apparatus for a packet-switched network communic… | Expired / Lapsed | 1987-10-05 | — | 13 | Details |
| EP0254440A1 | Data handling apparatus | Expired / Lapsed | 1987-07-01 | — | 8 | Details |
| GB2113910A | One-transistor dynamic ram cells | Expired / Lapsed | 1982-12-09 | — | 8 | Details |
| DE2755179A1 | DEVICE FOR ATTACHING A MEASURING HEAD | Expired / Lapsed | 1977-12-10 | — | 0 | Details |
| DE2537142A1 | THIN FILM THERMAL PRINT HEAD | Expired / Lapsed | 1975-08-21 | — | 0 | Details |
| DE2236251B2 | MAGNETO-OPTICAL POLARIMETER | Expired / Lapsed | 1972-07-24 | — | 0 | Details |
| US7032242B1 | Method and system for distributed network address translati… | Expired / Lapsed | 1999-03-17 | 2006-04-18 | 40 | Details |
| US6826613B1 | Virtually addressing storage devices through a switch | Expired / Lapsed | 2000-03-15 | 2004-11-30 | 65 | Details |
| US6807182B1 | Stacked network devices including a protocol engine and dis… | Expired / Lapsed | 2000-01-31 | 2004-10-19 | 3 | Details |
| US6785286B1 | Port mirroring across a trunked stack of multi-port communi… | Expired / Lapsed | 1999-08-06 | 2004-08-31 | 17 | Details |
| US6781982B1 | Method and system for allocating persistent private network… | Expired / Lapsed | 1999-10-26 | 2004-08-24 | 25 | Details |
| US6768743B1 | Method and system for address server redirection for multip… | Expired / Lapsed | 1999-10-26 | 2004-07-27 | 27 | Details |
| US6697354B1 | Method and system for distributed network address translati… | Expired / Lapsed | 1998-08-19 | 2004-02-24 | 28 | Details |
| US6674743B1 | Method and apparatus for providing policy-based services fo… | Expired / Lapsed | 1999-12-30 | 2004-01-06 | 52 | Details |
| US6675218B1 | System for user-space network packet modification | Expired / Lapsed | 1998-08-14 | 2004-01-06 | 28 | Details |
| US6577642B1 | Method and system for virtual network administration with a… | Expired / Lapsed | 1999-01-15 | 2003-06-10 | 42 | Details |
| US6567405B1 | Method and protocol for distributed network address transla… | Expired / Lapsed | 2002-02-04 | 2003-05-20 | 11 | Details |
| US6542504B1 | Profile based method for packet header compression in a poi… | Expired / Lapsed | 1999-05-28 | 2003-04-01 | 28 | Details |
| US6523068B1 | Method for encapsulating and transmitting a message include… | Expired / Lapsed | 1999-08-27 | 2003-02-18 | 34 | Details |
| US6510162B1 | System and method for managing channel usage in a data over… | Expired / Lapsed | 1998-05-27 | 2003-01-21 | 20 | Details |
| US6490632B1 | High performance load balancing and fail over support of in… | Expired / Lapsed | 1999-03-18 | 2002-12-03 | 39 | Details |
| US6487196B1 | System and method for simulating telephone use in a network… | Expired / Lapsed | 1998-05-29 | 2002-11-26 | 32 | Details |
| US6442158B1 | Method and system for quality-of-service based data forward… | Expired / Lapsed | 1998-05-27 | 2002-08-27 | 27 | Details |
| US6434606B1 | System for real time communication buffer management | Expired / Lapsed | 1999-05-28 | 2002-08-13 | 33 | Details |
| US6430276B1 | Telecommunications system and method providing generic netw… | Expired / Lapsed | 1999-10-19 | 2002-08-06 | 48 | Details |
| US6425015B1 | Stacked communication devices and method for port mirroring… | Expired / Lapsed | 1998-11-30 | 2002-07-23 | 17 | Details |
| US6398117B1 | Method and system for combining bar codes of different enco… | Expired / Lapsed | 2000-01-14 | 2002-06-04 | 37 | Details |
| US6396842B1 | Method of searching using longest match based Randix Search… | Expired / Lapsed | 1998-04-30 | 2002-05-28 | 25 | Details |
| US6393474B1 | Dynamic policy management apparatus and method using active… | Expired / Lapsed | 1998-12-31 | 2002-05-21 | 8 | Details |
| US6377218B1 | Device for providing an antenna, a receptacle, and a physic… | Expired / Lapsed | 2000-10-04 | 2002-04-23 | 22 | Details |
| US6366959B1 | Method and apparatus for real time communication system buf… | Expired / Lapsed | 1999-05-28 | 2002-04-02 | 21 | Details |
| US6363429B1 | Method and system for automatic determination of priority d… | Expired / Lapsed | 1999-04-20 | 2002-03-26 | 58 | Details |
| US6360271B1 | System for dynamic jitter buffer management based on synchr… | Expired / Lapsed | 1999-02-02 | 2002-03-19 | 40 | Details |
| US6353891B1 | Control channel security for realm specific internet protoc… | Expired / Lapsed | 2000-08-09 | 2002-03-05 | 22 | Details |
| US6353614B1 | Method and protocol for distributed network address transla… | Expired / Lapsed | 1998-03-05 | 2002-03-05 | 48 | Details |
| US6347073B1 | Method and system for controlling data transfer between a l… | Expired / Lapsed | 1998-04-29 | 2002-02-12 | 21 | Details |
| US6330245B1 | Hub system with ring arbitration | Expired / Lapsed | 1998-12-09 | 2001-12-11 | 27 | Details |
| US6327620B1 | Methods and apparatus for collecting, storing, processing a… | Expired / Lapsed | 1998-08-10 | 2001-12-04 | 33 | Details |
| US6324181B1 | Fibre channel switched arbitrated loop | Expired / Lapsed | 1998-04-16 | 2001-11-27 | 15 | Details |
| US6321264B1 | Network-performance statistics using end-node computer syst… | Expired / Lapsed | 1998-08-28 | 2001-11-20 | 24 | Details |
| US6314525B1 | Means for allowing two or more network interface controller… | Expired / Lapsed | 1997-10-02 | 2001-11-06 | 29 | Details |
| US6304892B1 | Management system for selective data exchanges across feder… | Expired / Lapsed | 1998-11-02 | 2001-10-16 | 10 | Details |
| US6289017B1 | Method of providing redundancy and load sharing among multi… | Expired / Lapsed | 1998-05-29 | 2001-09-11 | 16 | Details |
| US6286047B1 | Method and system for automatic discovery of network servic… | Expired / Lapsed | 1998-09-10 | 2001-09-04 | 23 | Details |
| US6282581B1 | Mechanism for resource allocation and for dispatching incom… | Expired / Lapsed | 1997-03-27 | 2001-08-28 | 27 | Details |
| US6272107B1 | Method of path restoration in an ATM network utilizing poin… | Expired / Lapsed | 1998-05-12 | 2001-08-07 | 33 | Details |
| US6269401B1 | Integrated computer system and network performance monitori… | Expired / Lapsed | 1998-08-28 | 2001-07-31 | 28 | Details |
| US6269099B1 | Protocol and method for peer network device discovery | Expired / Lapsed | 1998-07-01 | 2001-07-31 | 34 | Details |
| US6262979B1 | Telecommunication conferencing system and method | Expired / Lapsed | 1998-12-01 | 2001-07-17 | 30 | Details |
| US6259691B1 | System and method for efficiently transporting dual-tone mu… | Expired / Lapsed | 1998-07-24 | 2001-07-10 | 38 | Details |
| US6256306B1 | Atomic network switch with integrated circuit switch nodes | Expired / Lapsed | 1998-06-03 | 2001-07-03 | 58 | Details |
| US6246683B1 | Receive processing with network protocol bypass | Expired / Lapsed | 1998-05-01 | 2001-06-12 | 23 | Details |
| US6243846B1 | Forward error correction system for packet based data and r… | Expired / Lapsed | 1998-04-17 | 2001-06-05 | 34 | Details |
| US6233691B1 | Apparatus for reducing computer system power consumption | Expired / Lapsed | 2000-01-10 | 2001-05-15 | 26 | Details |
| US6233074B1 | Ring networks utilizing wave division multiplexing | Expired / Lapsed | 1998-05-18 | 2001-05-15 | 17 | Details |
| US6226769B1 | Forward error correction system for packet based real time … | Expired / Lapsed | 1999-02-03 | 2001-05-01 | 22 | Details |
| US6212563B1 | Method and system for setting and managing externally provi… | Expired / Lapsed | 1998-10-01 | 2001-04-03 | 23 | Details |
| US6208616B1 | System for detecting errors in a network | Expired / Lapsed | 1997-10-01 | 2001-03-27 | 13 | Details |
| US6201792B1 | Backpressure responsive multicast queue | Expired / Lapsed | 1998-05-14 | 2001-03-13 | 6 | Details |
| US6195332B1 | Rate-based flow control protocol on an ethernet-over-ring c… | Expired / Lapsed | 1998-08-28 | 2001-02-27 | 17 | Details |
| US6195589B1 | Personal data assistant with remote control capabilities | Expired / Lapsed | 1998-03-09 | 2001-02-27 | 5 | Details |
| US6185520B1 | Method and system for bus switching data transfers | Expired / Lapsed | 1998-05-22 | 2001-02-06 | 18 | Details |
| US6182149B1 | System for managing dynamic processing resources in a netwo… | Expired / Lapsed | 1999-01-11 | 2001-01-30 | 39 | Details |
| US6178172B1 | Method of topology database synchronization in an asynchron… | Expired / Lapsed | 1998-03-24 | 2001-01-23 | 11 | Details |
| US6175875B1 | Multicast filtering | Expired / Lapsed | 1998-02-27 | 2001-01-16 | 5 | Details |
| US6175871B1 | Method and apparatus for real time communication over packe… | Expired / Lapsed | 1997-10-01 | 2001-01-16 | 70 | Details |
| US5958009A | System and method for efficiently monitoring quality of ser… | Expired / Lapsed | 1997-02-27 | 1999-09-28 | 12 | Details |
| US5956487A | Embedding web access mechanism in an appliance for user int… | Expired / Lapsed | 1996-10-25 | 1999-09-21 | 30 | Details |
| US5610833A | Computer-aided design methods and apparatus for multilevel … | Expired / Lapsed | 1995-09-25 | 1997-03-11 | 11 | Details |
| US5517602A | Method and apparatus for generating a topologically consist… | Expired / Lapsed | 1992-12-03 | 1996-05-14 | 15 | Details |
| US5497369A | Multicast switch circuits | Expired / Lapsed | 1991-10-31 | 1996-03-05 | 17 | Details |
| US5485553A | Method and apparatus for managing and initiating video capt… | Expired / Lapsed | 1993-10-29 | 1996-01-16 | 18 | Details |
| USD364391S | Portable transaction terminal | Expired / Lapsed | 1994-10-31 | 1995-11-21 | 1 | Details |
| US5465725A | Ultrasonic probe | Expired / Lapsed | 1995-01-30 | 1995-11-14 | 22 | Details |
| US5438554A | Tunable acoustic resonator for clinical ultrasonic transduc… | Expired / Lapsed | 1994-02-28 | 1995-08-01 | 22 | Details |
| US5435314A | Intravascular imaging catheter tip having a dynamic radius | Expired / Lapsed | 1994-03-25 | 1995-07-25 | 15 | Details |
| US4140022B1 | Acoustic imaging apparatus | Expired / Lapsed | 1977-12-20 | 1995-05-16 | 0 | Details |
| US5313631A | Dual threshold system for immediate or delayed scheduled mi… | Expired / Lapsed | 1991-05-21 | 1994-05-17 | 21 | Details |
| US5273573A | Specific dye set for thermal ink-jet printing on paper | Expired / Lapsed | 1992-08-13 | 1993-12-28 | 10 | Details |
| US5272518A | Colorimeter and calibration system | Expired / Lapsed | 1990-12-17 | 1993-12-21 | 33 | Details |
| US5262925A | Tab frame with area array edge contacts | Expired / Lapsed | 1992-06-09 | 1993-11-16 | 6 | Details |
| US5227953A | Apparatus for retaining and electrically interconnecting mu… | Expired / Lapsed | 1991-10-18 | 1993-07-13 | 21 | Details |
| US5224208A | Gradient calculation for texture mapping | Expired / Lapsed | 1990-03-16 | 1993-06-29 | 11 | Details |
| US5217018A | Acoustic transmission through cladded core waveguide | Expired / Lapsed | 1989-05-16 | 1993-06-08 | 12 | Details |
| USD336078S | Optical scanner | Expired / Lapsed | 1991-05-08 | 1993-06-01 | 1 | Details |
| US5170152A | Luminance balanced encoder | Expired / Lapsed | 1990-12-14 | 1992-12-08 | 30 | Details |
| US5168552A | Color separation in ink jet color graphics printing | Expired / Lapsed | 1991-10-29 | 1992-12-01 | 23 | Details |
| US5158087A | Differential temperature measurement for ultrasound transdu… | Expired / Lapsed | 1992-01-31 | 1992-10-27 | 23 | Details |
| US5144498A | Variable wavelength light filter and sensor system | Expired / Lapsed | 1990-02-14 | 1992-09-01 | 101 | Details |
| US5133075A | Method of monitoring changes in attribute values of object … | Expired / Lapsed | 1988-12-19 | 1992-07-21 | 24 | Details |
| US5115449A | Data networks | Expired / Lapsed | 1990-05-21 | 1992-05-19 | 13 | Details |
| USD321865S | Electronic notepad for data entry | Expired / Lapsed | 1989-10-27 | 1991-11-26 | 1 | Details |
| US5065280A | Flex interconnect module | Expired / Lapsed | 1990-08-30 | 1991-11-12 | 9 | Details |
| US5025790A | Graded frequency sensors | Expired / Lapsed | 1989-05-16 | 1991-06-25 | 16 | Details |
| US4994110A | Dyes containing lithium for ink-jet printing inks | Expired / Lapsed | 1989-12-22 | 1991-02-19 | 24 | Details |
| US4989134A | Method and apparatus for enhancing data storage efficiency | Expired / Lapsed | 1987-03-20 | 1991-01-29 | 12 | Details |
| US4953080A | Object management facility for maintaining data in a comput… | Expired / Lapsed | 1988-04-25 | 1990-08-28 | 34 | Details |
| US4953084A | Method and apparatus using variable ranges to support symbo… | Expired / Lapsed | 1987-11-16 | 1990-08-28 | 13 | Details |
| US4943813A | Method of generating overhead transparency projecting using… | Expired / Lapsed | 1989-09-25 | 1990-07-24 | 17 | Details |
| US4889959A | RFI shielding gasket | Expired / Lapsed | 1988-07-15 | 1989-12-26 | 8 | Details |
| US4872835A | Hot chuck assembly for integrated circuit wafers | Expired / Lapsed | 1986-07-24 | 1989-10-10 | 25 | Details |
| US4844945A | Process for producing patterns in dielectric layers formed … | Expired / Lapsed | 1988-05-18 | 1989-07-04 | 6 | Details |
| US4739770A | Flush device | Expired / Lapsed | 1986-05-21 | 1988-04-26 | 9 | Details |
| US4738422A | Adjustable tilt/swivel/cable dress | Expired / Lapsed | 1986-11-10 | 1988-04-19 | 7 | Details |
| US4722346A | Stand-off device with special fluid | Expired / Lapsed | 1986-03-24 | 1988-02-02 | 5 | Details |
| US4700573A | Method to improve accuracy in delay lines | Expired / Lapsed | 1986-03-07 | 1987-10-20 | 4 | Details |
| US4692273A | Novel gel compositions, processes for making same and uses … | Expired / Lapsed | 1985-04-15 | 1987-09-08 | 12 | Details |
| USD288930S | Computer mouse | Expired / Lapsed | 1984-06-27 | 1987-03-24 | 1 | Details |
| US4635208A | Computer-aided design of systems | Expired / Lapsed | 1985-01-18 | 1987-01-06 | 14 | Details |
| US4631202A | Thin film magnetic recording film | Expired / Lapsed | 1986-04-21 | 1986-12-23 | 35 | Details |
| US4603701A | Stand-off device with special fluid | Expired / Lapsed | 1983-12-16 | 1986-08-05 | 15 | Details |
| US4579123A | Stand-off device | Expired / Lapsed | 1983-12-16 | 1986-04-01 | 8 | Details |
| US4490728A | Thermal ink jet printer | Expired / Lapsed | 1982-09-07 | 1984-12-25 | 5 | Details |
| US4455561A | Electron beam driven ink jet printer | Expired / Lapsed | 1982-11-22 | 1984-06-19 | 65 | Details |
| US4396912A | Method and means for point connecting with a differential i… | Expired / Lapsed | 1981-08-17 | 1983-08-02 | 12 | Details |
| US4387720A | Transducer acoustic lens | Expired / Lapsed | 1980-12-29 | 1983-06-14 | 6 | Details |
| US4386339A | Direct flash analog-to-digital converter and method | Expired / Lapsed | 1982-04-05 | 1983-05-31 | 12 | Details |
| US4381470A | Stratified particle absorber | Expired / Lapsed | 1980-12-24 | 1983-04-26 | 4 | Details |
| US4336544A | Method and apparatus for drop-on-demand ink jet printing | Expired / Lapsed | 1980-08-18 | 1982-06-22 | 9 | Details |
| US4331941A | Digital phase domain amplitude modulation method and appara… | Expired / Lapsed | 1980-02-29 | 1982-05-25 | 28 | Details |
| US4240003A | Apparatus and method for suppressing mass/spring mode in ac… | Expired / Lapsed | 1979-03-12 | 1980-12-16 | 4 | Details |
| US4223682A | Beat-to-beat systolic and diastolic indicator | Expired / Lapsed | 1978-04-10 | 1980-09-23 | 18 | Details |
| US4215308A | Self calibrating crystal controlled frequency counter metho… | Expired / Lapsed | 1978-10-30 | 1980-07-29 | 16 | Details |
| US4185641A | Pressure dome | Expired / Lapsed | 1978-08-23 | 1980-01-29 | 3 | Details |
| US4181966A | Adaptable programmed calculator including a percent keyboar… | Expired / Lapsed | 1976-04-28 | 1980-01-01 | 8 | Details |
| US4170992A | Fiducial point location | Expired / Lapsed | 1978-01-05 | 1979-10-16 | 10 | Details |
| US4170818A | Barrier height voltage reference | Expired / Lapsed | 1977-10-03 | 1979-10-16 | 44 | Details |
| US4167331A | Multi-wavelength incremental absorbence oximeter | Expired / Lapsed | 1976-12-20 | 1979-09-11 | 11 | Details |
| US4156921A | Adaptable programmed calculator including automatic decimal… | Expired / Lapsed | 1976-04-28 | 1979-05-29 | 5 | Details |
| US4153049A | Apparatus for maintaining signals within a given amplitude … | Expired / Lapsed | 1977-11-16 | 1979-05-08 | 6 | Details |
| US4152770A | Programmable calculator including means for programmably co… | Expired / Lapsed | 1977-06-01 | 1979-05-01 | 8 | Details |
| US4140022A | Acoustic imaging apparatus | Expired / Lapsed | 1977-12-20 | 1979-02-20 | 52 | Details |
| US4126898A | Programmable calculator including terminal control means | Expired / Lapsed | 1977-01-19 | 1978-11-21 | 15 | Details |
| USD249791S | Casing for electronic components or the like | Expired / Lapsed | 1976-10-20 | 1978-10-03 | 1 | Details |
| US4116229A | Acoustic imaging apparatus | Expired / Lapsed | 1976-08-30 | 1978-09-26 | 5 | Details |
| US4113381A | Surveying instrument and method | Expired / Lapsed | 1976-11-18 | 1978-09-12 | 8 | Details |
| US4109643A | Perfusion meter | Expired / Lapsed | 1976-06-17 | 1978-08-29 | 4 | Details |
| US4100532A | Digital pattern triggering circuit | Expired / Lapsed | 1976-11-19 | 1978-07-11 | 15 | Details |
| US4099240A | Method and apparatus for programmable and remote numeric co… | Expired / Lapsed | 1977-01-14 | 1978-07-04 | 37 | Details |
| US4082998A | Dual slope integration circuit | Expired / Lapsed | 1977-03-14 | 1978-04-04 | 8 | Details |
| US4063221A | Programmable calculator | Expired / Lapsed | 1974-12-23 | 1977-12-13 | 10 | Details |
| USD245107S | Electronic calculator | Expired / Lapsed | 1975-10-01 | 1977-07-19 | 1 | Details |
| US4033669A | Precision optical fiber switch | Expired / Lapsed | 1976-03-11 | 1977-07-05 | 5 | Details |
| US4033330A | Transcutaneous pH measuring instrument | Expired / Lapsed | 1975-09-08 | 1977-07-05 | 8 | Details |
| US4028538A | Programmable calculator employing algebraic language | Expired / Lapsed | 1974-09-30 | 1977-06-07 | 22 | Details |
| US4028675A | Method and apparatus for refreshing semiconductor memories … | Expired / Lapsed | 1973-05-14 | 1977-06-07 | 11 | Details |
| US4012725A | Programmable calculator | Expired / Lapsed | 1974-05-30 | 1977-03-15 | 52 | Details |
| US4000504A | Deep channel MOS transistor | Expired / Lapsed | 1975-05-12 | 1976-12-28 | 7 | Details |
| US3986495A | Optically excited diode current limiter | Expired / Lapsed | 1975-11-03 | 1976-10-19 | 5 | Details |
| US3976945A | Frequency synthesizer | Expired / Lapsed | 1975-09-05 | 1976-08-24 | 13 | Details |
| US3976864A | Apparatus and method for testing digital circuits | Expired / Lapsed | 1974-09-03 | 1976-08-24 | 29 | Details |
| US3971684A | Etching thin film circuits and semiconductor chips | Expired / Lapsed | 1975-04-14 | 1976-07-27 | 7 | Details |
| US3972026A | Linked list encoding method and control apparatus for refre… | Expired / Lapsed | 1974-09-23 | 1976-07-27 | 32 | Details |
| US3967266A | Display apparatus having improved cursor enhancement | Expired / Lapsed | 1974-09-16 | 1976-06-29 | 6 | Details |
| US3946729A | Ventilator patient monitor | Expired / Lapsed | 1974-10-17 | 1976-03-30 | 16 | Details |
| US4007352A | Thin film thermal print head | Expired / Lapsed | 1975-07-31 | 1976-02-08 | 5 | Details |
| US3916135A | Keyboard type switch with rocker type key actuator | Expired / Lapsed | 1974-07-03 | 1975-10-28 | 5 | Details |
| US3884546A | Spectrum shaping with parity sequences | Expired / Lapsed | 1973-07-30 | 1975-05-20 | 19 | Details |
| US3881805A | Acoustic terminations for acoustically tuned optical filters | Expired / Lapsed | 1974-01-18 | 1975-05-06 | 4 | Details |
| US3863060A | General purpose calculator with capability for performing i… | Expired / Lapsed | 1972-10-30 | 1975-01-28 | 35 | Details |
| US3852563A | Thermal printing head | Expired / Lapsed | 1974-02-01 | 1974-12-03 | 6 | Details |
| US3820079A | Bus oriented,modular,multiprocessing computer | Expired / Lapsed | 1972-11-20 | 1974-06-25 | 26 | Details |
| US3790284A | Interferometer system for measuring straightness and roll | Expired / Lapsed | 1972-05-08 | 1974-02-05 | 10 | Details |
| US3764902A | Phasemeter employing means for preventing errors in the pha… | Expired / Lapsed | 1972-04-24 | 1973-10-09 | 11 | Details |
| US3737871A | Stack register renamer | Expired / Lapsed | 1971-07-28 | 1973-06-05 | 11 | Details |
| US3734621A | Spectrophotometer utilizing memory storage calibration tech… | Expired / Lapsed | 1971-12-06 | 1973-05-22 | 13 | Details |
| US3721964A | Integrated circuit read only memory bit organized in coinci… | Expired / Lapsed | 1970-02-18 | 1973-03-20 | 13 | Details |
| US3701583A | Acousto-optical filter having scanned acoustic frequency co… | Expired / Lapsed | 1970-12-14 | 1972-10-31 | 0 | Details |
| US3678466A | Electronic calculator | Expired / Lapsed | 1970-10-14 | 1972-07-18 | 3 | Details |
| US3673323A | Storage display system | Expired / Lapsed | 1970-09-23 | 1972-06-27 | 4 | Details |
| US3670245A | Logic clip | Expired / Lapsed | 1970-03-05 | 1972-06-13 | 9 | Details |
| US3668461A | Output display for use with a calculator | Expired / Lapsed | 1969-05-21 | 1972-06-06 | 32 | Details |
| US3656853A | Interferometric system | Expired / Lapsed | 1969-03-10 | 1972-04-18 | 2 | Details |
| US3653765A | Acousto-optic light spectrum analysis | Expired / Lapsed | 1970-06-17 | 1972-04-04 | 4 | Details |
| US3654446A | Method and apparatus for the measurement and display of err… | Expired / Lapsed | 1970-04-03 | 1972-04-04 | 39 | Details |
| US3638001A | Method and apparatus for averaging the digital display for … | Expired / Lapsed | 1970-03-04 | 1972-01-25 | 21 | Details |
| US3632193A | Method and apparatus for control of light transmission thro… | Expired / Lapsed | 1970-06-17 | 1972-01-04 | 11 | Details |
| US3631343A | Time interval averaging circuit | Expired / Lapsed | 1970-08-27 | 1971-12-28 | 4 | Details |
| US3609326A | Counting apparatus and method using separate counters for r… | Expired / Lapsed | 1969-01-22 | 1971-09-28 | 4 | Details |
| US3602890A | Pen control system for an automatic x-y plotter | Expired / Lapsed | 1969-02-24 | 1971-08-31 | 11 | Details |
| US3596255A | Display blanking apparatus | Expired / Lapsed | 1969-07-09 | 1971-07-27 | 4 | Details |
| US3588873A | Information display apparatus | Expired / Lapsed | 1968-11-12 | 1971-06-28 | 0 | Details |
| US3569914A | Connector housing | Expired / Lapsed | 1969-02-19 | 1971-03-09 | 6 | Details |
| US3568054A | Pulse height spectrum analysis method and means | Expired / Lapsed | 1968-02-09 | 1971-03-02 | 5 | Details |
| US3566876A | Defibrillator | Expired / Lapsed | 1967-12-14 | 1971-03-02 | 2 | Details |
| US3565057A | Signal analyzing apparatus for an ultrasonic scanning system | Expired / Lapsed | 1968-12-06 | 1971-02-23 | 2 | Details |
| US3561832A | Quartz resonator pressure transducer | Expired / Lapsed | 1969-12-05 | 1971-02-09 | 0 | Details |
| US3557354A | Signal-to-noise ratio enhancement methods and means | Expired / Lapsed | 1970-01-09 | 1971-01-19 | 4 | Details |
| US3552386A | Arrhythmia detecting apparatus and method | Expired / Lapsed | 1968-12-23 | 1971-01-05 | 14 | Details |
| US3543279A | Point plotter for graphic recorder | Expired / Lapsed | 1969-07-22 | 1970-11-24 | 0 | Details |
| US3535523A | Radiant flux measuring apparatus of the thermopile type | Expired / Lapsed | 1967-02-01 | 1970-10-20 | 0 | Details |
| US3534292A | Frequency stabilized laser system | Expired / Lapsed | 1967-08-02 | 1970-10-13 | 0 | Details |
| US3526791A | Low noise controller | Expired / Lapsed | 1968-01-19 | 1970-09-01 | 0 | Details |
| US3524442A | Arrhythmia detector and method | Expired / Lapsed | 1967-12-01 | 1970-08-18 | 0 | Details |
| US3523539A | Demand cardiac pacemaker and method | Expired / Lapsed | 1968-02-26 | 1970-08-11 | 0 | Details |
| US3484591A | Extended bandwidth signal-to-noise ratio enhancement method… | Expired / Lapsed | 1966-07-18 | 1969-12-16 | 0 | Details |
| US3458259A | Interferometric system | Expired / Lapsed | 1966-11-07 | 1969-07-29 | 0 | Details |
| US3444456A | Control circuit for low noise controlled rectifier systems | Expired / Lapsed | 1966-12-06 | 1969-05-13 | 0 | Details |
| US3435232A | Beam position detector | Expired / Lapsed | 1966-03-03 | 1969-03-25 | 0 | Details |
| US3432802A | Edge board and flat cable connector | Expired / Lapsed | 1966-10-13 | 1969-03-11 | 0 | Details |
| US3421106A | Differential frequency transducer | Expired / Lapsed | 1967-10-03 | 1969-01-07 | 0 | Details |
| US3414733A | Annularly shaped light emitter and photocell connected by p… | Expired / Lapsed | 1965-02-15 | 1968-12-03 | 2 | Details |
| US3413497A | Insulated-gate field effect transistor with electrostatic p… | Expired / Lapsed | 1966-07-13 | 1968-11-26 | 2 | Details |
| US3406564A | Ultrasonic transducer scanning system | Expired / Lapsed | 1965-09-13 | 1968-10-22 | 0 | Details |
| US3407288A | Decade | Expired / Lapsed | 1965-06-25 | 1968-10-22 | 0 | Details |
| US3403271A | Ultrasonic transducer with absorptive load | Expired / Lapsed | 1966-02-09 | 1968-09-24 | 0 | Details |
| US3392307A | Trigger circuit having a trigger level which varies with ap… | Expired / Lapsed | 1965-04-12 | 1968-07-09 | 0 | Details |
| US3388385A | Nondestructive round-off display circuit | Expired / Lapsed | 1966-05-19 | 1968-06-11 | 2 | Details |
| US3381279A | Read only memory | Expired / Lapsed | 1966-04-21 | 1968-04-30 | 0 | Details |
| US3375460A | Feedback amplifier having an input current limiting circuit | Expired / Lapsed | 1965-08-04 | 1968-03-26 | 0 | Details |
| US3365590A | Piezoelectric transducer | Expired / Lapsed | — | 1968-01-23 | 2 | Details |
| US3359975A | Pulse rate sensing device | Expired / Lapsed | 1965-10-23 | 1967-12-26 | 2 | Details |
| US3359366A | Electronic printer | Expired / Lapsed | 1964-03-05 | 1967-12-19 | 2 | Details |
| US3353410A | Overload stop for pressure transducer | Expired / Lapsed | 1965-07-27 | 1967-11-21 | 1 | Details |
| US3328763A | Electronic desk-type computer | Expired / Lapsed | 1963-10-01 | 1967-06-27 | 2 | Details |
| US3327226A | Anticoincidence circuit | Expired / Lapsed | 1964-11-16 | 1967-06-20 | 2 | Details |
| US3315153A | Bridge circuit employing selfbalancing control means | Expired / Lapsed | 1965-01-21 | 1967-04-18 | 2 | Details |
| US3313293A | Multi-electrode needle | Expired / Lapsed | 1964-01-13 | 1967-04-11 | 2 | Details |
| US3304413A | Cardiac output computer | Expired / Lapsed | 1963-03-26 | 1967-02-14 | 2 | Details |
| US3299290A | Two terminal storage circuit employing single transistor an… | Expired / Lapsed | 1964-02-17 | 1967-01-17 | 2 | Details |
| US3297859A | Counting direction control circuit for use with reversible … | Expired / Lapsed | 1965-06-24 | 1967-01-10 | 2 | Details |
| US3296613A | Integrating converter | Expired / Lapsed | 1963-12-03 | 1967-01-03 | 2 | Details |
| US3274375A | Thermostatic oven controller with automatic reset | Expired / Lapsed | 1964-04-16 | 1966-09-20 | 2 | Details |
| US3274501A | Voltage to frequency converter | Expired / Lapsed | 1964-01-03 | 1966-09-20 | 1 | Details |
| US3273073A | Frequency synthesizer | Expired / Lapsed | 1964-02-19 | 1966-09-13 | 2 | Details |
| US3267407A | Programmable matrix | Expired / Lapsed | 1964-01-24 | 1966-08-16 | 2 | Details |
| US3249796A | Sweep marker circuit | Expired / Lapsed | 1963-08-12 | 1966-05-03 | 1 | Details |
| US3245004A | Variable frequency signal generator with feedback linear co… | Expired / Lapsed | 1964-01-03 | 1966-04-05 | 2 | Details |
| US3237101A | Temperature compensated high frequency thermal power detect… | Expired / Lapsed | 1961-08-29 | 1966-02-22 | 2 | Details |
| US3201781A | Analog to digital transducers | Expired / Lapsed | 1962-07-23 | 1965-08-17 | 1 | Details |
| US3192516A | Vibration detector | Expired / Lapsed | 1964-06-25 | 1965-06-29 | 0 | Details |
| US3191065A | Sampling circuit | Expired / Lapsed | 1962-10-03 | 1965-06-22 | 2 | Details |
| US3185856A | Interconnection of power supply units | Expired / Lapsed | 1961-02-28 | 1965-05-25 | 2 | Details |
| US3177442A | Wide-range variable frequency signal source operating in ph… | Expired / Lapsed | 1963-03-14 | 1965-04-06 | 1 | Details |
| US3175090A | Counter network including photoresponsive elements | Expired / Lapsed | 1961-09-05 | 1965-03-23 | 2 | Details |
| US3170124A | Tunnel diode pulse generator having independently controlla… | Expired / Lapsed | 1961-10-10 | 1965-02-16 | 2 | Details |
| US3155822A | Recirculating adder | Expired / Lapsed | 1961-10-02 | 1964-11-03 | 2 | Details |
| US3148337A | Temperature compensated signal-controlled current source | Expired / Lapsed | 1962-10-01 | 1964-09-08 | 2 | Details |
| US3133189A | Electronic interpolating counter for the time interval and … | Expired / Lapsed | 1960-08-05 | 1964-05-12 | 2 | Details |
| US3101442A | Transistorized direct-voltage regulated power supply | Expired / Lapsed | 1959-12-15 | 1963-08-20 | 2 | Details |
| US3041535A | Electrical measuring instrument | Expired / Lapsed | 1959-01-12 | 1962-06-26 | 0 | Details |
| US3040158A | Proportional temperature controller | Expired / Lapsed | 1960-12-01 | 1962-06-19 | 0 | Details |
| US3040186A | High frequency trigger converters employing negative resist… | Expired / Lapsed | 1960-09-19 | 1962-06-19 | 0 | Details |
| US3040273A | Voltage to frequency converter | Expired / Lapsed | 1958-04-28 | 1962-06-19 | 0 | Details |
| US3014135A | Direct current amplifier and modulator therefor | Expired / Lapsed | 1957-03-04 | 1961-12-19 | 0 | Details |
| US3011129A | Plural series gate sampling circuit using positive feedback | Expired / Lapsed | 1959-08-10 | 1961-11-28 | 0 | Details |
| US2994825A | Voltage to time-interval converter | Expired / Lapsed | 1958-07-09 | 1961-08-01 | 0 | Details |
| US2950418A | Display apparatus | Expired / Lapsed | 1956-07-20 | 1960-08-23 | 0 | Details |
| US2945183A | Delay generator | Expired / Lapsed | 1956-08-08 | 1960-07-12 | 0 | Details |
| US2900522A | Solid state network | Expired / Lapsed | 1957-01-08 | 1959-08-18 | 0 | Details |
| US2896086A | Attenuator network | Expired / Lapsed | 1957-07-01 | 1959-07-21 | 0 | Details |
| US2894178A | Photoelectric system | Expired / Lapsed | 1956-01-18 | 1959-07-07 | 0 | Details |
| US2864292A | Tractor mounted plant thinning machine | Expired / Lapsed | 1956-01-18 | 1958-12-16 | 0 | Details |
| US2851596A | Electronic counter | Expired / Lapsed | 1954-04-15 | 1958-09-09 | 0 | Details |
| US2850676A | Regulated filament supply | Expired / Lapsed | 1954-11-05 | 1958-09-02 | 0 | Details |
| US2796830A | Data controlled selective printing system | Expired / Lapsed | 1956-11-01 | 1957-06-25 | 0 | Details |
| US2769595A | Frequency counter | Expired / Lapsed | 1952-07-23 | 1956-11-06 | 0 | Details |
| US2762915A | Electronic decade scaler | Expired / Lapsed | 1951-05-21 | 1956-09-11 | 0 | Details |
| US2748272A | Frequency generator | Expired / Lapsed | 1952-06-27 | 1956-05-29 | 0 | Details |
| US2748278A | Sine wave generator | Expired / Lapsed | 1951-05-21 | 1956-05-29 | 0 | Details |
| US2650415A | Terminal card manufacturing machine | Expired / Lapsed | 1948-11-27 | 1953-09-01 | 0 | Details |
| US2587755A | Frequency measuring or indicating apparatus | Expired / Lapsed | 1948-03-06 | 1952-03-04 | 0 | Details |
| US2418568A | Frequency divider | Expired / Lapsed | 1944-04-11 | 1947-04-08 | 0 | Details |
| US2268872A | Variable frequency oscillation generator | Expired / Lapsed | 1939-07-11 | 1942-01-06 | 0 | Details |