US3518756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabrication of multilevel ceramic,microelectronic structures
Assignee: International Business Machines Corp
•
Filing: 1967-08-22
•
Granted: 1970-07-07
•
Expires: 1987-08-22
Abstract
No abstract record available.
Inventors
- 👤 Marvin Bennett
- 👤 Warren E Boyd
- 👤 Joseph C Nobile
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:39
CPC Classifications
H; H10; H10W; H10W70/00; H10W70/01; H10W70/05; Y; Y10; Y10T; Y10T29/00; Y10T29/42; Y10T29/43; Y10T29/435; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49099; Y10T29/49117; Y10T29/49124; Y10T29/49155; Y10T29/4998; Y10T29/49993
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USRE26421E
Cited
US2953247A
Cited
US2925645A
Cited
US2972003A
Cited
US2912748A
Cited
US3079672A
Cited
US2986804A
Cited
US3037265A
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 |