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US3544397A
Expired / Lapsed
US
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Method for the manufacturing of zener diodes
Assignee: International Standard Electric Corp
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Filing: 1968-01-04
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Granted: 1970-12-01
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Expires: 1988-01-04
Abstract
No abstract record available.
Inventors
- 👤 Hans Weinerth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:49
CPC Classifications
H; H10; H10D; H10D99/00; H10P; H10P32/00; H10P32/10; H10P32/16; H10P95/00; H10P95/50; Y; Y10; Y10S; Y10S438/00; Y10S438/965; Y10S438/983
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3457469A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |