Patent US3142594A successfully refreshed from Google Patents.
US3142594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rectifying devices
Assignee: Allis Chalmers Corp
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Filing: 1960-11-25
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Granted: 1964-07-28
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Expires: 1980-11-25
Abstract
No abstract record available.
Inventors
- 👤 Lowell W Bahe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:39
CPC Classifications
H; H10; H10D; H10D62/00; H10D62/80; H10D62/82; H10D62/875; H10D99/00; H10P; H10P10/00; H10P95/00; H10P95/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A RECTIFYING DEVICE COMPRISING A FIRST LAYER OF P-TYPE SEMICONDUCTIVE NICKEL OXIDE, A SECOND LAYER OF N-TYPE SEMICONDUCTIVE ZINC OXIDE IN SPACED RELATIONSHIP TO SAID FIRST LAYER, AND A REGION OF INTERMIXTURE OF SAID OXIDES INTERPOSED BETWEEN SAID FIRST AND SAID SECOND LAYERS AND INTEGRAL THEREWITH.
Claim 2
Dependent Claim
46 words
A RECTIFYING DEVICE COMPRISING A FIRST LAYER OF P-TYPE SEMICONDUCTIVE NICKEL OXIDE, A SECOND LAYER OF N-TYPE SEMICONDUCTIVE ZINC OXIDE IN SPACED RELATIONSHIP TO SAID FIRST LAYER, AND A REGION OF INTERMIXTURE OF SAID OXIDES INTERPOSED BETWEEN SAID FIRST AND SAID SECOND LAYERS AND INTEGRAL THEREWITH.
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) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |