Patent US6053876A successfully refreshed from Google Patents.
US3076949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoconductive cell
Assignee: INFRARED IND Inc
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Filing: 1958-11-17
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Granted: 1963-02-05
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Expires: 1978-11-17
Abstract
No abstract record available.
Inventors
- 👤 Norman C Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:58
CPC Classifications
H; H10; H10F; H10F30/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A PHOTOCONDUCTIVE CELL COMPRISING TWO PLATES OF ELECTRICALLY INSULATING MATERIAL, SAID PLATES FACING EACH OTHER, A FIRST PHOTOCONDUCTIVE COATING APPLIED TO THE INNER SURFACE OF ONE OF SAID PLATES SO AS TO LEAVE THEREIN A CENTRALLY DISPOSED WINDOW ON WHICH THREE IS NO PHOTOCONDUCTIVE COATING, A SECOND PHOTOCONDUCTIVE COATING APPLIED TO THE INNER SURFACE OF THE OTHER OF SAID PLATES SO AS TO COVER AN AREA CORRESPONDING TO THAT OF SAID WINDOW, A THIN TRANSPARENT LAYER OF INSULATING MATERIAL SANDWICHED BETWEEN SAID FIRST AND SECOND PHOTOCONDUCTIVE COATINGS, AND MEANS TO MAKE ELECTRICAL CONNECTIONS TO BOTH OF SAID PHOTOCONDUTIVE COATINGS.
Claim 2
Dependent Claim
99 words
A PHOTOCONDUCTIVE CELL COMPRISING TWO PLATES OF ELECTRICALLY INSULATING MATERIAL, SAID PLATES FACING EACH OTHER, A FIRST PHOTOCONDUCTIVE COATING APPLIED TO THE INNER SURFACE OF ONE OF SAID PLATES SO AS TO LEAVE THEREIN A CENTRALLY DISPOSED WINDOW ON WHICH THREE IS NO PHOTOCONDUCTIVE COATING, A SECOND PHOTOCONDUCTIVE COATING APPLIED TO THE INNER SURFACE OF THE OTHER OF SAID PLATES SO AS TO COVER AN AREA CORRESPONDING TO THAT OF SAID WINDOW, A THIN TRANSPARENT LAYER OF INSULATING MATERIAL SANDWICHED BETWEEN SAID FIRST AND SECOND PHOTOCONDUCTIVE COATINGS, AND MEANS TO MAKE ELECTRICAL CONNECTIONS TO BOTH OF SAID PHOTOCONDUTIVE COATINGS.
References Cited (Backward Citations)
US2001672A
Cited
US2838876A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |