US3213308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultraviolet radiation detector
Assignee: Westinghouse Electric Corp
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Filing: 1961-11-29
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Granted: 1965-10-19
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Expires: 1981-11-29
Abstract
No abstract record available.
Inventors
- 👤 Walter A Feibelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:28
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/38
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
114 words
AN IMAGE DEVICE RESPONSIVE TO ULTRAVIOLET RADIATION, COMPRISING AN EVACUATED ENVELOPE HAVING A INPUT IMAGE SCREEN DISPOSED AT ONE END THEREOF, SAID SCREEN COMPRISING A WINDOW OF ULTRAVIOLET TRANSMISSIVE MATERIAL AND PHOTOCATHOD MEANS COMPRISING A LAYER OF PALLADIUM TRANSMISSIVE TO ULTRAVIOLET RADIATION DISPOSED ON THE VACUUM SIDE OF SAID WINDOW AND A LAYER OF PHOTOEMISSIVE MATERIAL SENSITIVE TO ULTRAVIOLET DISPOSED UPON SAID PALLADIUM, MEANS INCLUDING SILVER CHLORIDE FOR VACUUM SEALING SAID SCREEN TO SAID ENVELOPE, TARGET MEANS WITHIN SAID ENVELOPE SPACED FROM SAID PHOTOCATHODE FOR RECEIVING ELECTRONS EMITTED FROM SAID PHOTOCATHODE ON ONE SIDE OF SAID TARGET, AND MEANS FOR FORMING AND DIRECTING AN ELECTRON BEAM ONTO THE OTHER SIDE OF SAID TARGET MEANS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |