US2736850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selenium rectifier containing tellurium
Assignee: Individual
•
Filing: 1952-11-24
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Granted: 1956-02-28
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Expires: 1972-11-24
Abstract
No abstract record available.
Inventors
- 👤 Lidow Eric
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:03
CPC Classifications
H; H10; H10D; H10D48/00; H10D48/01; H10D48/04; H10D48/043; H10P; H10P14/00; H10P14/20; H10P14/34; H10P14/3402; H10P14/38; H10P14/3802
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A SELENIUM RECTIFIER HAVING A BASE PLATE, A SEMICONDUCTOR LAYER ON THE BASE PLATE AND A COUNTERELECTRODE LAYER OVER THE SEMI-CONDUCTOR LAYER, SAID SEMI-CONDUCTOR LAYER COMPRISING RECTIFIER TYPE SELENIUM AND TELLURIUM IN THE PROPORTION OF ABOUT 90 TO 1200 PARTS TELLURIUM AND
Claim 2
Dependent Claim
42 words
A SELENIUM RECTIFIER HAVING A BASE PLATE, A SEMICONDUCTOR LAYER ON THE BASE PLATE AND A COUNTERELECTRODE LAYER OVER THE SEMI-CONDUCTOR LAYER, SAID SEMI-CONDUCTOR LAYER COMPRISING RECTIFIER TYPE SELENIUM AND TELLURIUM IN THE PROPORTION OF ABOUT 90 TO 1200 PARTS TELLURIUM AND
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) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |