US3522164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor surface preparation and device fabrication
Assignee: Texas Instruments Inc
•
Filing: 1965-10-21
•
Granted: 1970-07-28
•
Expires: 1985-10-21
Abstract
No abstract record available.
Inventors
- 👤 George G Sumner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:49
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/34; C23C14/35; H; H10; H10P; H10P95/00; Y; Y10; Y10S; Y10S148/00; Y10S148/007; Y10S148/158; Y10S438/00; Y10S438/974
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3067485A
Cited
US3021271A
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US3151006A
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US3208888A
Cited
US3116184A
Cited
US3271208A
Cited
US3148094A
Cited
US3205101A
Cited
US3372069A
Cited
US3287186A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |