Patent US3376423A successfully refreshed from Google Patents.
US3376423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light responsive circuit which prevents photosensitive device saturation
Assignee: RCA Corp
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Filing: 1965-03-15
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Granted: 1968-04-02
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Expires: 1985-03-15
Abstract
No abstract record available.
Inventors
- 👤 Emrys C James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:39
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/78; H03K17/795
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
110 words
A CIRCUIT COMPRISING A LIGHT RESPONSIVE SEMICONDUCTOR HAVING FIRST AND SECOND ELECTRODES, MEANS FOR COUPLING FIRST AND SECOND REFERENCE POTENTIALS TO SAID FIRST AND SECOND ELECTRODES, RESPECTIVELY, WHERE SAID FIRST REFERENCE POTENTIAL IS MORE POSITIVE THAN SAID SECOND, A DIODE HAVING A CATHODE AND AN ANODE, A TRANSISTOR HAVING A BASE, COLLECTOR AND EMITTER, MEANS FOR COUPLING ONE OF SAID ANODE AND CATHODE, ONE OF SAID FIRST AND SECOND ELECTRODES, AND SAID TRANSISTOR BASE TOGETHER AND THE OTHER OF SAID ANODE AND CATHODE TO A THIRD REFERENCE POTENTIAL INTERMEDIATE SAID FIRST AND SECOND POTENTIALS, AND MEANS FOR COUPLING SAID TRANSISTOR COLLECTOR AND EMITTER, RESPECTIVELY, TO FOURTH AND FIFTH REFERENCE POTENTIALS.
References Cited (Backward Citations)
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Cited
US3102924A
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US3189745A
Cited
US3104323A
Cited
US3214705A
Cited
US3333106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |