US2815475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selenium rectifier
Assignee: TDK Micronas GmbH
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Filing: 1954-03-05
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Granted: 1957-12-03
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Expires: 1974-03-05
Abstract
No abstract record available.
Inventors
- 👤 Paul E Lighty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:02
CPC Classifications
H; H10; H10W; H10W76/00; H10W76/40; H10W76/42; H10W76/48; H10D; H10D48/00; H10D48/01; H10D48/04; H10D48/043; H10D48/046
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
33 words
IN A RECTIFIER HAVING A BASE PLATE,A LAYER OF SELENIUM ON THE BASE PLATE AND A COUNTER-ELECTRODE LAYER ON THE SELENIUM AN INERMEDIATE LAYER BETWEEN THE SELENIUM AND THE COUNTER ELECTRODE COMPRISING POLYMONOCHLOROTRIFLUOROETHYLENE.
References Cited (Backward Citations)
US2393967A
Cited
US2660697A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-02 | 1961-06-03 | 1961-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-02 | 1965-06-03 | 1965-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-02 | 1969-06-03 | 1969-12-03 | $7700.00 | Window Closed / Lapsed |