Patent US3717799A successfully refreshed from Google Patents.
US3717799A
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Ktao3 ultraviolet detector
Assignee: Honeywell Inc
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Filing: 1971-02-19
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Granted: 1973-02-20
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Expires: 1991-02-19
Abstract
Abstract SOLID STATE PHOTO-CONDUCTIVE AND PHOTO-VOLTAIC ULTRA VIOLET DETECTORS HAVING A PEAK RESPONSE AT ABOUT 2600 TO 2800 A. ARE FORMED A BODY OF POTASSIUM TANTALATE (KTAO3) HAVING AN "AS-GROWN" SURFACE AND FIRST AND SECOND METAL CONTRACTS ATTACHED TO THE AS-GROWN SURFACE, FORMING SURFACE BARRIER JUNCTIONS. THE RADIATION WHICH IS DETECTED IS INCIDENT UPON THE AS-GROWN SURFACE.
Inventors
- 👤 P Chapman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:52
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/58; H; H10; H10F; H10F99/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |