US3430112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated gate field effect transistor with channel portions of different conductivity
Assignee: Philips North America LLC
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Filing: 1965-07-13
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Granted: 1969-02-25
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Expires: 1985-07-13
Abstract
No abstract record available.
Inventors
- 👤 Robert Arthur Hilbourne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:36
CPC Classifications
H; H10; H10D; H10D30/00; H10D30/60; H10D30/637; H10D62/00; H10D62/10; H10D62/17; H10D62/213; H10D62/221; H10D62/235; H10D62/299; H10D99/00; Y; Y10; Y10S; Y10S148/00; Y10S148/018; Y10S148/053
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |