Patent US3462557A successfully refreshed from Google Patents.
US2496432A
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Selenium rectifier
Assignee: Westinghouse Electric Corp
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Filing: 1946-05-21
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Granted: 1950-02-07
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Expires: 1966-05-21
Abstract
No abstract record available.
Inventors
- 👤 Wayne E Blackburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:55
CPC Classifications
G; G11; G11C; G11C21/00; H; H10; H10D; H10D48/00; H10D48/01; H10D48/04; H10D48/043; H10D48/045; H10D48/046; H10D48/047
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
66 words
AN ELECTRIC CIRCUIT ELEMENT COMPRISING A BASE PLATE HAVING A LAYER OF SELENIUM DEPOSITED ON A PORTION OF ITS SURFACE, A LAYER OF ONE OR MORE METALS SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM, ALUMINUM AND BERYLLIUM AND A COUNTERELECTRODE CONTAINING CADMIUM SUPERPOSED ON THE FREE SURFACE OF THE LAST-MENTIONED LAYER, SAID LAYER BEING THIN ENOUGH TO PERMIT DIFFUSION THROUGH IT BY MATERIALS FROM SAID COUNTERELECRODE.
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) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |