US3539876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monolithic integrated structure including fabrication thereof
Assignee: International Business Machines Corp
•
Filing: 1967-05-23
•
Granted: 1970-11-10
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Expires: 1987-05-23
Abstract
No abstract record available.
Inventors
- 👤 Irving Feinberg
- 👤 Jack L Langdon
- 👤 Carl L Sitler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:37
CPC Classifications
H; H10; H10D; H10D84/00; H10D84/60; H10D84/611; H10D84/613; H10D84/615; H10D84/01; H10D84/0112; H10D84/02; H10D84/03; H10D84/038; H10D84/90; H10W; H10W76/00; H10W76/10; H10W76/12; H10W76/161; H10W70/00; H10W70/60; H10W70/62; H10W70/65; H10W70/654; H10W70/655; H10W72/00; H10W72/071; H10W72/072; H10W72/07251; H10W72/20; Y; Y10; Y10S; Y10S148/00; Y10S148/037; Y10S148/043; Y10S148/085; Y10S148/102; Y10S148/162
Claims Analysis
Total Claims: 0
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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) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |