US3821783A
Expired / Lapsed
US
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Semiconductor device with a silicon monocrystalline body having a specific crystal plane
Assignee: Hitachi Ltd
•
Filing: 1971-03-02
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Granted: 1974-06-28
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Expires: 1991-03-02
Abstract
Abstract A SEMICONDUCTOR DEVICE COMPRISING A SILICON MONOCRYSTALLINE BODY HAVING A MAJOR FLAT SURFACE HAVING A SPECIFIC CRYSTALLOGRAPHIC ORIENTATION DEVIATING 2.5* TO 15* FROM THE (100) AXIS, PREFERABLY TOWARD AN AXIS, IN THE (100) PLANE, SELECTED FROM THE GROUP CONSISTING OF 0* TO 35* OFF ONE OF THE AXES (010), (001), (0-10) AND (00-1)
Inventors
- 👤 Y Sugita
- 👤 T Kato
- 👤 K Sugaware
- 👤 M Tamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:37
CPC Classifications
H; H10; H10D; H10D62/00; H10D62/40; H10D62/405; B; B22; B22F; B22F3/00; B22F3/24; H10D99/00; H10P; H10P14/00; H10P14/20; H10P14/29; H10P14/2901; H10P14/2902; H10P14/2905; H10P14/2926; H10P14/34; H10P14/3402; H10P14/3404; H10P14/3411; H10P95/00; Y; Y10; Y10S; Y10S117/00; Y10S117/901; Y10S117/902; Y10S148/00; Y10S148/049; Y10S148/097; Y10S148/115; Y10S148/118; Y10S438/00; Y10S438/973
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |