US3179835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pickup tube having a cesiated photocathode and a substantially leakagefree target, and method of making the same
Assignee: RCA Corp
•
Filing: 1960-11-22
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Granted: 1965-04-20
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Expires: 1980-11-22
Abstract
No abstract record available.
Inventors
- 👤 Paul W Kaseman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:56
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A TELEVISION PICKUP TUBE HAVING A PHOTOSENSITIVE CATHODE AND A TARGET, SAID CATHODE COMPRISING A TRANSPARENT SUPPORT BASE ELEMENT, AN OXIDIZED MANGANESE FILM ON SAID BASE ELEMENT, A DEPOSIT OF ANTIMONY ON SAID OXIDIZED MANGANESE FILM, AND A DEPOSIT OF CESIUM ON SAID DEPOSIT OF ANTIMONY, SAID TARGET COMPRISING A RELATIVELY THIN STRUCTURE HAVING THEREON A DEPOSIT OF CESIUM OXIDE, WHEREBY SAID TARGET IS SUBSTANTIALLY FREE FROM LEAKAGE.
Claim 2
Dependent Claim
68 words
A TELEVISION PICKUP TUBE HAVING A PHOTOSENSITIVE CATHODE AND A TARGET, SAID CATHODE COMPRISING A TRANSPARENT SUPPORT BASE ELEMENT, AN OXIDIZED MANGANESE FILM ON SAID BASE ELEMENT, A DEPOSIT OF ANTIMONY ON SAID OXIDIZED MANGANESE FILM, AND A DEPOSIT OF CESIUM ON SAID DEPOSIT OF ANTIMONY, SAID TARGET COMPRISING A RELATIVELY THIN STRUCTURE HAVING THEREON A DEPOSIT OF CESIUM OXIDE, WHEREBY SAID TARGET IS SUBSTANTIALLY FREE FROM LEAKAGE.
References Cited (Backward Citations)
US1935894A
Cited
US2601208A
Cited
US2676282A
Cited
US2754428A
Cited
US2914690A
Cited
US2842706A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |