Patent US2806984A successfully refreshed from Google Patents.
US2806984A
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Selenium rectifiers and process for manufacturing same
Assignee: Licentia Patent Verwaltungs GmbH
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Filing: 1956-02-06
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Granted: 1957-09-17
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Expires: 1976-02-06
Abstract
No abstract record available.
Inventors
- 👤 Koch Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:22
CPC Classifications
H; H10; H10D; H10D48/00; H10D48/01; H10D48/04; H10D48/042; H10D48/043; H10D48/044; H10P; H10P14/00; H10P14/20; H10P14/22; H10P14/29; H10P14/2901; H10P14/2923; H10P14/32; H10P14/3202; H10P14/3241; H10P14/34; H10P14/3402; H10P14/38; H10P14/3802
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A SELENIUM RECTIFIER COMPRISING, IN SUCCESSIVE ARRANGEMENT, A METAL BASE PLATE, A LAYER OF CADMIUM-CONTAINING MATERIAL, A CADMIUM SELENIDE LAYER, A FIRST SELENIUM LAYER SUBSTANTIALLY FREE FROM HALOGEN ATOMS, A SECOND SELENIUM LAYER RICHER IN HALOGEN ATOMS THAN SAID FIRST LAYER, A BISMUTH SELENIDE LAYER AND A BISMUTH ELECTRODE
Claim 2
Dependent Claim
49 words
A SELENIUM RECTIFIER COMPRISING, IN SUCCESSIVE ARRANGEMENT, A METAL BASE PLATE, A LAYER OF CADMIUM-CONTAINING MATERIAL, A CADMIUM SELENIDE LAYER, A FIRST SELENIUM LAYER SUBSTANTIALLY FREE FROM HALOGEN ATOMS, A SECOND SELENIUM LAYER RICHER IN HALOGEN ATOMS THAN SAID FIRST LAYER, A BISMUTH SELENIDE LAYER AND A BISMUTH ELECTRODE
References Cited (Backward Citations)
US2316905A
Cited
US2334554A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |