US2770561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectric cathode and method of producing same
Assignee: RCA Corp
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Filing: 1954-03-08
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Granted: 1956-11-13
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Expires: 1974-03-08
Abstract
No abstract record available.
Inventors
- 👤 Alfred H Sommer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:42
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/38; H01J40/00; H01J40/02; H01J40/04; H01J40/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
47 words
THE METHOD OF FORMING A PHOTOSENSITIVE ELECTRODE ON A SUPPORT MEMBER, SAID METHOD COMPRISING THE STEPS OF FORMING A FILM OF ANTIMONY ON SAID SUPPORT MEMBER, SENSITIZING SAID ANTIMONY FILM BY DEPOSITING THEREON A PLURALITY OF ALKALI METALS, AND SUBSEQUENTLY BAKING SAID FILM AT AN ELEVATED TEMPERATURE.
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) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |