US3471291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective plating of oxide-free silicon surfaces
Assignee: General Electric Co
•
Filing: 1967-05-29
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Granted: 1969-10-07
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Expires: 1987-05-29
Abstract
No abstract record available.
Inventors
- 👤 Donald L Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:31
CPC Classifications
H; H10; H10P; H10P14/00; H10P14/40; H10P14/46; G; G03; G03F; G03F7/00; G03F7/004; G03F7/0041; H10W; H10W74/00; H10W74/40; H10W74/43
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1560240A
Cited
GB547806A
Cited
US2875046A
Cited
US2841477A
Cited
US3013955A
Cited
US3122463A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |