US3000768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor device with controlled zone thickness
Assignee: International Business Machines Corp
•
Filing: 1959-05-28
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Granted: 1961-09-19
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Expires: 1979-05-28
Abstract
No abstract record available.
Inventors
- 👤 John C Marinace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:24
CPC Classifications
H; H10; H10P; H10P95/00; C; C22; C22B; C22B41/00; C23; C23C; C23C16/00; C23C16/44; C23C16/46; C25; C25F; C25F3/00; C25F3/02; C25F3/12; C30; C30B; C30B25/00; C30B25/02; C30B29/00; C30B29/02; C30B29/08; H10D; H10D99/00; H10P14/00; H10P14/20; H10P14/24; H10P14/29; H10P14/2924; H10P14/2925; H10P14/36; Y; Y10; Y10S; Y10S148/00; Y10S148/006; Y10S148/026; Y10S148/05; Y10S148/056; Y10S148/071; Y10S148/085; Y10S148/135; Y10S438/00; Y10S438/914; Y10S438/925; Y10S438/977; Y10S438/979
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2692839A
Cited
US2763581A
Cited
GB745698A
Cited
US2846346A
Cited
US2900584A
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US2885609A
Cited
US2898248A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |