Patent US2750540A successfully refreshed from Google Patents.
US2750540A
Expired / Lapsed
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Selenium rectifiers and their manufacture
Assignee: Siemens Schuckertwerke AG
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Filing: 1950-08-17
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Granted: 1956-06-12
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Expires: 1970-08-17
Abstract
No abstract record available.
Inventors
- 👤 Waldkotter Erich Gerhar Rudolf
- 👤 Hase Alfred Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:35
CPC Classifications
H; H10; H10W; H10W90/00; H10D; H10D48/00; H10D48/01; H10D48/04; H10D48/042; H10D99/00; H10P; H10P14/00; H10P14/20; H10P14/203; H10P14/22; H10P14/29; H10P14/2901; H10P14/2923; H10P14/32; H10P14/3202; H10P14/3236; H10P14/3241; H10P14/3242; H10P14/3244; H10P14/3248; H10P14/34; H10P14/3402
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A DRY RECTIFIER UNIT, COMPRISING A FLEXIBLE BASE ELECTRODE OF A MAXIMUM THICKNESS OF ABOUT 0.01 MM., A FLEXIBLE COUNTER ELECTRODE, AND A FLEXIBLE SEMI-CONDUCTIVE LAYER DISPOSED BETWEEN SAID TWO ELECTRODES AND FIRMLY JOINED THEREWITH, SAID ELECTRODES AND SAID LAYER FORMING TOGETHER A FLEXIBLE AND INDEPENDENTLY OPERABLE RECTIFIER UNIT.
Claim 2
Dependent Claim
49 words
A DRY RECTIFIER UNIT, COMPRISING A FLEXIBLE BASE ELECTRODE OF A MAXIMUM THICKNESS OF ABOUT 0.01 MM., A FLEXIBLE COUNTER ELECTRODE, AND A FLEXIBLE SEMI-CONDUCTIVE LAYER DISPOSED BETWEEN SAID TWO ELECTRODES AND FIRMLY JOINED THEREWITH, SAID ELECTRODES AND SAID LAYER FORMING TOGETHER A FLEXIBLE AND INDEPENDENTLY OPERABLE RECTIFIER UNIT.
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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) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |