US3518509A
Expired / Lapsed
US
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Complementary field-effect transistors on common substrate by multiple epitaxy techniques
Assignee: International Standard Electric Corp
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Filing: 1967-05-04
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Granted: 1970-06-30
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Expires: 1987-05-04
Abstract
No abstract record available.
Inventors
- 👤 Roger Cullis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:44
CPC Classifications
H; H10; H10D; H10D30/00; H10D30/60; H10D30/63; H10D84/00; H10D84/01; H10D84/0123; H10D84/0126; H10D84/02; H10D84/03; H10D84/038; H10D84/80; H10D84/82; H10D84/83; H10D84/85; H10D99/00; H10P; H10P95/00; Y; Y10; Y10S; Y10S148/00; Y10S148/085
Claims Analysis
Total Claims: 0
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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) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |