US3376163A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive cell
Assignee: Northrop Grumman Guidance and Electronics Co Inc
•
Filing: 1961-08-11
•
Granted: 1968-04-02
•
Expires: 1981-08-11
Abstract
No abstract record available.
Inventors
- 👤 Abrahamsohn Ilse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:25
CPC Classifications
H; H10; H10F; H10F10/00; H10F10/10; H10F30/00; H10F99/00; Y; Y02; Y02E; Y02E10/00; Y02E10/50; Y10; Y10S; Y10S148/00; Y10S148/063; Y10S148/12; Y10S148/169
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN A PHOTOSENSITIVE CELL COMPRISING A PELLUCID CONDUCTIVE SUBSTRATE AND DISPOSED THEREON, A FIRST AND SECOND SEPARATELY SENSITIZED, PELLUCID, PHOTOCONDUCTOR CONTAINING LAYER, EACH OF SAID LAYERS HAVING A THICKNESS OF LESS THAN ABOUT 10 MICRONS AND EACH LAYER COMPRISING THE SAME PHOTOCONDUCTOR SUBSTANCE CHOSEN FORM THE GROUP CONSISTING OF CADMIUM SULFIDE, ZINC SULFIDE AND MIXTURES THEREOF AND A COPPER ACTIVATOR, THE IMPROVEMENT WHEREIN SAID SECOND LAYER COMPRISES AN AMOUNT OF COPPER ACTIVATOR SUBSTANTIALLY GREATER THAN THE AMOUNT OF COPPER ACTIVATOR IN SAID FIRST LAYER TO PROVIDE RATIO OF THE DIFFERENCE BETWEEN THE LIGHT CURRENT AND THE DARK CURRENT TO THE DARK CURRENT OF THE CELL OF AT LEAST ABOUT 107.
Claim 2
Dependent Claim
110 words
IN A PHOTOSENSITIVE CELL COMPRISING A PELLUCID CONDUCTIVE SUBSTRATE AND DISPOSED THEREON, A FIRST AND SECOND SEPARATELY SENSITIZED, PELLUCID, PHOTOCONDUCTOR CONTAINING LAYER, EACH OF SAID LAYERS HAVING A THICKNESS OF LESS THAN ABOUT 10 MICRONS AND EACH LAYER COMPRISING THE SAME PHOTOCONDUCTOR SUBSTANCE CHOSEN FORM THE GROUP CONSISTING OF CADMIUM SULFIDE, ZINC SULFIDE AND MIXTURES THEREOF AND A COPPER ACTIVATOR, THE IMPROVEMENT WHEREIN SAID SECOND LAYER COMPRISES AN AMOUNT OF COPPER ACTIVATOR SUBSTANTIALLY GREATER THAN THE AMOUNT OF COPPER ACTIVATOR IN SAID FIRST LAYER TO PROVIDE RATIO OF THE DIFFERENCE BETWEEN THE LIGHT CURRENT AND THE DARK CURRENT TO THE DARK CURRENT OF THE CELL OF AT LEAST ABOUT 107.
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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 |