US3492174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a semiconductor device
Assignee: Sony Corp
•
Filing: 1967-03-14
•
Granted: 1970-01-27
•
Expires: 1987-03-14
Abstract
No abstract record available.
Inventors
- 👤 Keiichi Nakamura
- 👤 Akira Misawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:26
CPC Classifications
H; H10; H10D; H10D62/00; H10D62/10; H10D62/113; H10D62/115; H10D99/00; H10W; H10W10/00; H10W10/01; H10W10/021; H10W10/20; H10W74/00; H10W74/40; H10W74/43; Y; Y10; Y10S; Y10S148/00; Y10S148/037; Y10S148/043; Y10S148/085; Y10S148/106; Y10S148/117; Y10S148/145; Y10S438/00; Y10S438/958
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2794846A
Cited
US3093507A
Cited
US3231421A
Cited
US3158505A
Cited
US3279963A
Cited
US3433686A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |