US3519901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bi-layer insulation structure including polycrystalline semiconductor material for integrated circuit isolation
Assignee: Texas Instruments Inc
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Filing: 1968-01-29
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Granted: 1970-07-07
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Expires: 1988-01-29
Abstract
No abstract record available.
Inventors
- 👤 Kenneth E Bean
- 👤 Billy M Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:42
CPC Classifications
H; H10; H10W; H10W74/00; H10W74/40; H10D; H10D62/00; H10D62/40; H10D88/00; H10N; H10N97/00; H10P; H10P95/00; Y; Y10; Y10S; Y10S148/00; Y10S148/055; Y10S148/085; Y10S148/122; Y10S148/123; Y10S148/124; Y10S148/136; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49099
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3366519A
Cited
US3323198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-06 | 1974-01-05 | 1974-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-06 | 1978-01-05 | 1978-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-06 | 1982-01-05 | 1982-07-07 | $7700.00 | Window Closed / Lapsed |