US3525025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically isolated semiconductor devices in integrated circuits
Assignee: Texas Instruments Inc
•
Filing: 1968-01-04
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Granted: 1970-08-18
•
Expires: 1988-01-04
Abstract
No abstract record available.
Inventors
- 👤 Carl J Lowery
- 👤 Billy B Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:14
CPC Classifications
C; C23; C23F; C23F1/00; H; H10; H10P; H10P14/00; H10P14/20; H10P14/24; H10P14/27; H10P14/271; H10P14/29; H10P14/2901; H10P14/2902; H10P14/2905; H10P14/2926; H10P14/34; H10P14/3402; H10P14/3404; H10P14/3411; H10P14/3438; H10P14/3441; H10P14/3442; H10P14/3444; H10P95/00; H10W; H10W10/00; H10W10/01; H10W10/011; H10W10/019; H10W10/031; H10W10/10; H10W10/30; Y; Y10; Y10S; Y10S148/00; Y10S148/037; Y10S148/043; Y10S148/049; Y10S148/05; Y10S148/051; Y10S148/085; Y10S148/115; Y10S148/122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3404321A
Cited
US3275846A
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US3271685A
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US3320485A
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US3312882A
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US3355669A
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US3386865A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |