US3449644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor device with inversion layer,underneath an oxide coating,compensated by gold dopant
Assignee: US Philips Corp
•
Filing: 1965-12-13
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Granted: 1969-06-10
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Expires: 1985-12-13
Abstract
No abstract record available.
Inventors
- 👤 Armenag Garabed Nassibian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:30
CPC Classifications
H; H10; H10D; H10D62/00; H10D62/80; H10D62/83; H10D62/834; H10D99/00; H10P; H10P14/00; H10P14/60; H10P14/63; H10P14/6302; H10P14/6304; H10P14/6306; H10P14/6308; H10P14/6309; H10P14/6322; H10P32/00; H10P32/10; H10P32/17; H10P32/171; H10P32/18; Y; Y10; Y10S; Y10S148/00; Y10S148/062; Y10S148/118; Y10S438/00; Y10S438/914; Y10S438/917; Y10S438/919
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3204160A
Cited
US3177100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |