US2688564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming cadmium sulfide photoconductive cells
Assignee: RCA Corp
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Filing: 1950-11-22
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Granted: 1954-09-07
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Expires: 1970-11-22
Abstract
No abstract record available.
Inventors
- 👤 Stanley V Forgue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:55
CPC Classifications
H; H10; H10F; H10F55/00; H10F55/10; C; C01; C01G; C01G9/00; C01G9/02; C30; C30B; C30B1/00; C30B1/10; H10F71/00; H10P; H10P95/00; Y; Y10; Y10S; Y10S148/00; Y10S148/064; Y10S148/084
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
THE METHOD OF FORMING A PHOTOCONDUCTIVE FILM ON A SUPPORTING MEMBER, SAID METHOD COMPRISING THE STEPS OF, DEPOSITING A THIN FILM OF CADMIUM SULFIDE ON SAID SUPPORTING MEMBER BY SUBLIMATION, BAKING SAID CADMIUM SULFIDE FILM FOR MORE THAN FIVE MINUTES IN AN ATMOSPHERE CONTAINING OXYGEN TO INCREASE THE RESISTIVITY OF THE FILM IN THE DARK.
Claim 2
Independent Claim
55 words
THE METHOD OF FORMING A PHOTOCONDUCTIVE FILM ON A SUPPORTING MEMBER, SAID METHOD COMPRISING THE STEPS OF, DEPOSITING A THIN FILM OF CADMIUM SULFIDE ON SAID SUPPORTING MEMBER BY SUBLIMATION, BAKING SAID CADMIUM SULFIDE FILM FOR MORE THAN FIVE MINUTES IN AN ATMOSPHERE CONTAINING OXYGEN TO INCREASE THE RESISTIVITY OF THE FILM IN THE DARK.
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) | 1957-09-06 | 1958-03-08 | 1958-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-06 | 1962-03-08 | 1962-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-06 | 1966-03-08 | 1966-09-07 | $7700.00 | Window Closed / Lapsed |