US2660698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selenium rectifier
Assignee: STC PLC
•
Filing: 1951-10-29
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Granted: 1953-11-24
•
Expires: 1971-10-29
Abstract
No abstract record available.
Inventors
- 👤 Donald W Black
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:09
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: 2
Claim 1
Independent Claim
49 words
A RECTIFIER HAVING A BASE PLATE, A LAYER OF SELENIUM ON THE BASE PLATE, A COUNTERELECTRODE LAYER ON THE SELENIUM AND AN INTERMEDIATE LAYER BETWEEN THE SELENIUM AND THE COUNTERELECTRODE CONSISTING ESSENTIALLY OF A HIGH MOLECULAR WEIGHT LINEAR POLYMERIC CARBONAMIDE DEPOSITED FROM A SOLUTION CONTAINING A HIGH MOLECULAR WEIGHT
Claim 2
Dependent Claim
49 words
A RECTIFIER HAVING A BASE PLATE, A LAYER OF SELENIUM ON THE BASE PLATE, A COUNTERELECTRODE LAYER ON THE SELENIUM AND AN INTERMEDIATE LAYER BETWEEN THE SELENIUM AND THE COUNTERELECTRODE CONSISTING ESSENTIALLY OF A HIGH MOLECULAR WEIGHT LINEAR POLYMERIC CARBONAMIDE DEPOSITED FROM A SOLUTION CONTAINING A HIGH MOLECULAR WEIGHT
References Cited (Backward Citations)
US2320088A
Cited
US2467186A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |