US3524113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Complementary pnp-npn transistors and fabrication method therefor
Assignee: International Business Machines Corp
•
Filing: 1967-06-15
•
Granted: 1970-08-11
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Expires: 1987-06-15
Abstract
No abstract record available.
Inventors
- 👤 Benjamin Agusta
- 👤 Neil D Lubart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:34
CPC Classifications
H; H10; H10D; H10D84/00; H10D84/01; H10D84/0112; H10D84/0114; H10D84/02; H10D84/03; H10D84/038; H10D84/60; H10D84/63; H10D84/641; H10D84/643; H10D84/67; H10D84/673; Y; Y10; Y10S; Y10S148/00; Y10S148/037; Y10S148/049; Y10S148/085; Y10S148/151
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3177414A
Cited
US3221215A
Cited
US3260902A
Cited
US3327182A
Cited
US3370995A
Cited
US3423653A
Cited
US3380153A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-10 | 1974-02-09 | 1974-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-10 | 1978-02-09 | 1978-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-10 | 1982-02-09 | 1982-08-11 | $7700.00 | Window Closed / Lapsed |