Hoffman Electronics Corp
Hoffman ElActive Patents
0
Total Holdings
31
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US3334217A | Simulation of solar radiation | Expired / Lapsed | 1962-04-12 | 1967-08-01 | 0 | Details |
| US3294662A | ph meter | Expired / Lapsed | 1962-05-16 | 1966-12-27 | 1 | Details |
| US3255055A | Semiconductor device | Expired / Lapsed | 1963-03-20 | 1966-06-07 | 1 | Details |
| US3089070A | Photoelectric converter or the like | Expired / Lapsed | 1957-09-03 | 1963-05-07 | 2 | Details |
| US3040416A | Method of making a large area solar cell panel | Expired / Lapsed | 1959-05-13 | 1962-06-26 | 0 | Details |
| US3025335A | Flexible solar energy converter panel | Expired / Lapsed | 1960-02-29 | 1962-03-13 | 2 | Details |
| US3020412A | Semiconductor photocells | Expired / Lapsed | 1959-02-20 | 1962-02-06 | 0 | Details |
| US2994766A | Panoramic receivers or the like | Expired / Lapsed | 1958-01-27 | 1961-08-01 | 0 | Details |
| US2989941A | Closed diffusion apparatus | Expired / Lapsed | 1959-02-02 | 1961-06-27 | 0 | Details |
| US2989702A | Electronic generator of symbols or characters or the like | Expired / Lapsed | 1958-04-03 | 1961-06-20 | 0 | Details |
| US2984775A | Ruggedized solar cell and process for making the same or th… | Expired / Lapsed | 1958-07-09 | 1961-05-16 | 0 | Details |
| US2963390A | Method of making a photosensitive semi-conductor device | Expired / Lapsed | 1955-09-26 | 1960-12-06 | 2 | Details |
| US2919388A | Semiconductor devices | Expired / Lapsed | 1959-03-17 | 1959-12-29 | 0 | Details |
| US2919299A | High voltage photoelectric converter or the like | Expired / Lapsed | 1957-09-04 | 1959-12-29 | 0 | Details |
| US2919298A | Light sensitive voltage producing device or the like | Expired / Lapsed | 1956-10-23 | 1959-12-29 | 0 | Details |
| US2919353A | Solar powered portable radio receiver or the like | Expired / Lapsed | 1956-02-03 | 1959-12-29 | 0 | Details |
| US2919386A | Rectifier and method of making same | Expired / Lapsed | 1955-11-10 | 1959-12-29 | 0 | Details |
| US2919300A | Conductor insulator combinations or the like | Expired / Lapsed | 1954-01-29 | 1959-12-29 | 0 | Details |
| US2914733A | Frequency synthesizer system or the like | Expired / Lapsed | 1957-06-10 | 1959-11-24 | 0 | Details |
| US2904613A | Large area solar energy converter and method for making the… | Expired / Lapsed | 1957-08-26 | 1959-09-15 | 0 | Details |
| US2893904A | Thermal zener device or the like | Expired / Lapsed | 1958-10-27 | 1959-07-07 | 2 | Details |
| US2894176A | Load protection circuits or the like | Expired / Lapsed | 1954-11-04 | 1959-07-07 | 0 | Details |
| US2864897A | Universal phonograph pickup head or the like | Expired / Lapsed | 1958-02-17 | 1958-12-16 | 0 | Details |
| US2863956A | Crystal oscillator and buffer amplifier circuits or the like | Expired / Lapsed | 1955-11-14 | 1958-12-09 | 0 | Details |
| US2863105A | Rectifying device | Expired / Lapsed | 1955-11-10 | 1958-12-02 | 0 | Details |
| US2863053A | Height gate generators or the like | Expired / Lapsed | 1954-10-26 | 1958-12-02 | 0 | Details |
| US2847568A | Distance digital display or the like | Expired / Lapsed | 1955-10-24 | 1958-08-12 | 0 | Details |
| US2827574A | Multivibrators | Expired / Lapsed | 1953-08-24 | 1958-03-18 | 0 | Details |
| US2824238A | Radiation detection pulse translating circuit | Expired / Lapsed | 1955-10-03 | 1958-02-18 | 0 | Details |
| US2797313A | Radio communication by neutral frequency deviation | Expired / Lapsed | 1951-03-27 | 1957-06-25 | 0 | Details |
| US2764687A | Transistor automatic frequency control | Expired / Lapsed | 1954-07-19 | 1956-09-25 | 0 | Details |