US3475661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor device including polycrystalline areas among monocrystalline areas
Assignee: Sony Corp
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Filing: 1967-02-06
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Granted: 1969-10-28
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Expires: 1987-02-06
Abstract
No abstract record available.
Inventors
- 👤 Saburo Iwata
- 👤 Akira Misawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:55
CPC Classifications
H; H10; H10P; H10P95/00; C; C23; C23C; C23C8/00; H10D; H10D99/00; H10P14/00; H10P14/20; H10P14/24; H10P14/27; H10P14/271; H10P14/29; H10P14/2901; H10P14/2902; H10P14/2905; H10P14/34; H10P14/3402; H10P14/3404; H10P14/3411; H10W; H10W10/00; H10W10/01; H10W10/031; H10W10/30; Y; Y10; Y10S; Y10S148/00; Y10S148/037; Y10S148/122; Y10S438/00; Y10S438/914; Y10S438/922
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) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |