US3078559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing semiconductor elements
Assignee: GTE Sylvania Inc
•
Filing: 1959-04-13
•
Granted: 1963-02-26
•
Expires: 1979-04-13
Abstract
No abstract record available.
Inventors
- 👤 Frank M Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:40
CPC Classifications
B; B28; B28D; B28D5/00; B28D5/0005; B28D5/0058; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1064; Y10T29/00; Y10T29/49; Y10T29/49789; Y10T29/4979; Y10T29/49794; Y10T29/49798; Y10T29/4981; Y10T29/49812
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US676799A
Cited
US744245A
Cited
US1357739A
Cited
US1731820A
Cited
US2423810A
Cited
US2441590A
Cited
US2530110A
Cited
US2415841A
Cited
US2762954A
Cited
US2865082A
Cited
US2736847A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |