US2736848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photocells
Assignee: RCA Corp
•
Filing: 1951-05-15
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Granted: 1956-02-28
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Expires: 1971-05-15
Abstract
No abstract record available.
Inventors
- 👤 Rose Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:43
CPC Classifications
H; H10; H10F; H10F30/00; H10F30/20; H10F30/21; H10F30/22; H10F30/2205; H10P; H10P95/00; Y; Y10; Y10S; Y10S148/00; Y10S148/064
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A PHOTO-CONDUCTIVE CELL COMPRISING A BODY OF CADMIUM SULFIDE, TWO METALLIC ELECTRODES IN CONTACT WITH SAID BODY WITH ONE OF SAID ELECTRODES HAVING A POINT IN CONTACT THEREWITH, THE INTERIOR OF SAID BODY CONTAINING DONOR IMPURITIES, A SURFACE LAYER ON SAID BODY CONTAINING ACCEPTOR IMPURTIES, AND SAID ELECTRODE POINT BEING IN CONTACT WITH SAID SURFACE LAYER.
Claim 2
Dependent Claim
56 words
A PHOTO-CONDUCTIVE CELL COMPRISING A BODY OF CADMIUM SULFIDE, TWO METALLIC ELECTRODES IN CONTACT WITH SAID BODY WITH ONE OF SAID ELECTRODES HAVING A POINT IN CONTACT THEREWITH, THE INTERIOR OF SAID BODY CONTAINING DONOR IMPURITIES, A SURFACE LAYER ON SAID BODY CONTAINING ACCEPTOR IMPURTIES, AND SAID ELECTRODE POINT BEING IN CONTACT WITH SAID SURFACE LAYER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |