Patent US3768970A successfully refreshed from Google Patents.
Patent US2739276A successfully refreshed from Google Patents.
US2739276A
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Copper oxide rectifier and method of making the same
Assignee: General Electric Co
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Filing: 1951-02-23
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Granted: 1956-03-20
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Expires: 1971-02-23
Abstract
No abstract record available.
Inventors
- 👤 Irby William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:45
CPC Classifications
H; H10; H10P; H10P14/00; H10P14/20; H10P14/29; H10P14/2901; H10P14/2923; H10D; H10D48/00; H10D48/01; H10D48/07; H10D48/071; H10D48/074; H10P14/203; H10P14/34; H10P14/3402; H10P14/3434; Y; Y10; Y10S; Y10S205/00; Y10S205/917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
THE METHOD OF PRODUCING A COPPER OXIDE RECTIFIER CELL WHICH INCLUDES COATING AT LEAST ONE SURFACE OF A COPPER PLATE WITH A THIN FILM OF ANTIMONY, DIPPING SAID COATED PLATE IN A DILUTE WATER SOLUTION OF ANTIMONY CHLORIDE, HEATING SAID PLATE IN AN OXIDIZING ATMOSPHERE TO FORM A
Claim 2
Independent Claim
48 words
THE METHOD OF PRODUCING A COPPER OXIDE RECTIFIER CELL WHICH INCLUDES COATING AT LEAST ONE SURFACE OF A COPPER PLATE WITH A THIN FILM OF ANTIMONY, DIPPING SAID COATED PLATE IN A DILUTE WATER SOLUTION OF ANTIMONY CHLORIDE, HEATING SAID PLATE IN AN OXIDIZING ATMOSPHERE TO FORM A
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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) | 1959-03-20 | 1959-09-19 | 1960-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-20 | 1963-09-19 | 1964-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-20 | 1967-09-19 | 1968-03-20 | $7700.00 | Window Closed / Lapsed |