US3427598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emitter gated memory cell
Assignee: Fairchild Semiconductor Corp
•
Filing: 1965-12-09
•
Granted: 1969-02-11
•
Expires: 1985-12-09
Abstract
No abstract record available.
Inventors
- 👤 James J Kubinec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:13
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/027; H03K3/037; G; G11; G11C; G11C11/00; G11C11/21; G11C11/34; G11C11/40; G11C11/41; G11C11/411; G11C11/4116; G11C11/413; G11C11/414; G11C11/416
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A SIGNAL STORAGE AND PROCESSING APPARATUS COMPRISING: FIRST AND SECOND MET''S EACH HAVING AT LEAST FIRST, SECOND AND THIRD EMITTER AND BASE AND COLLECTOR ELECTRODES; A FIRST SOURCE OF MATRIX DRIVE SIGNAL HAVING TWO STABLE STATES, ONE ACTIVE AND ONE INACTIVE STATE (COUPLED TO THE FIRST EMITTERS OF BOTH SAID MET''S; A SECOND SOURCE OF MATRIX DRIVE SIGNAL HAVING TWO STABLE STATES, ONE ACTIVE AND ONE INACTIVE STATE, COUPLED TO SECOND EMITTERS OF BOTH SAID MET''S; A PAIR OF DATA INPUT SIGNAL SOURCES COUPLED RESPECTIVELY TO EACH OF THE THIRD EMITTERS OF BOTH SAID MET''S; MEANS COUPLING THE BASE OF EACH MET TO THE COLLECTOR OF THE OTHER MET; AND A SENSE OUTPUT CIRCUIT WHOSE INPUTS ARE COUPLED TO BOTH SAID FIRST AND SECOND MATRIX DRIVE SIGNALS AND TO THE COLLECTOR OF ONE SAID MET''S, WHEREBY SAID SENSE OUTPUT CIRCUIT IS ENABLED TO RECEIVE DATA FROM ONE OF SAID FIRST AND SECOND MET''S WHEN BOTH SAID FIRST AND SECOND MATRIX DRIVE SIGNALS ARE IN THE ACTIVE STATE.
Claim 2
Dependent Claim
167 words
A SIGNAL STORAGE AND PROCESSING APPARATUS COMPRISING: FIRST AND SECOND MET''S EACH HAVING AT LEAST FIRST, SECOND AND THIRD EMITTER AND BASE AND COLLECTOR ELECTRODES; A FIRST SOURCE OF MATRIX DRIVE SIGNAL HAVING TWO STABLE STATES, ONE ACTIVE AND ONE INACTIVE STATE (COUPLED TO THE FIRST EMITTERS OF BOTH SAID MET''S; A SECOND SOURCE OF MATRIX DRIVE SIGNAL HAVING TWO STABLE STATES, ONE ACTIVE AND ONE INACTIVE STATE, COUPLED TO SECOND EMITTERS OF BOTH SAID MET''S; A PAIR OF DATA INPUT SIGNAL SOURCES COUPLED RESPECTIVELY TO EACH OF THE THIRD EMITTERS OF BOTH SAID MET''S; MEANS COUPLING THE BASE OF EACH MET TO THE COLLECTOR OF THE OTHER MET; AND A SENSE OUTPUT CIRCUIT WHOSE INPUTS ARE COUPLED TO BOTH SAID FIRST AND SECOND MATRIX DRIVE SIGNALS AND TO THE COLLECTOR OF ONE SAID MET''S, WHEREBY SAID SENSE OUTPUT CIRCUIT IS ENABLED TO RECEIVE DATA FROM ONE OF SAID FIRST AND SECOND MET''S WHEN BOTH SAID FIRST AND SECOND MATRIX DRIVE SIGNALS ARE IN THE ACTIVE STATE.
References Cited (Backward Citations)
US3177374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-11 | 1972-08-12 | 1973-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-11 | 1976-08-12 | 1977-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-11 | 1980-08-12 | 1981-02-11 | $7700.00 | Window Closed / Lapsed |