Patent US3397448A successfully refreshed from Google Patents.
US3397448A
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Semiconductor integrated circuits and method of making same
Assignee: Dow Silicones Corp
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Filing: 1965-03-26
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Granted: 1968-08-20
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Expires: 1985-03-26
Abstract
No abstract record available.
Inventors
- 👤 Thomas N Tucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:46
CPC Classifications
H; H10; H10P; H10P14/00; H10P14/20; H10P14/24; H10P14/29; H10P14/2901; H10P14/2902; H10P14/2905; H10P14/2924; H10P14/2925; H10P14/34; H10P14/3402; H10P14/3404; H10P14/3408; H10W; H10W10/00; H10W10/01; H10W10/011; H10W10/019; H10W10/10; Y; Y10; Y10S; Y10S148/00; Y10S148/05; Y10S148/085; Y10S148/148; Y10S438/00; Y10S438/931; Y10S438/977
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) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |