US3549432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multilayer microelectronic circuitry techniques
Assignee: Texas Instruments Inc
•
Filing: 1968-07-15
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Granted: 1970-12-22
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Expires: 1988-07-15
Abstract
No abstract record available.
Inventors
- 👤 David R Sivertsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:59
CPC Classifications
H; H10; H10P; H10P95/00; H10D; H10D84/00; H10D84/01; H10D86/00; H10D86/01; H10W; H10W74/00; H10W74/40; H10W74/43; Y; Y10; Y10S; Y10S117/00; Y10S117/905; Y10S148/00; Y10S148/008; Y10S148/043; Y10S148/048; Y10S148/071; Y10S148/152
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3453723A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |