US3287611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlled conducting region geometry in semiconductor devices
Assignee: Motors Liquidation Co
•
Filing: 1961-08-17
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Granted: 1966-11-22
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Expires: 1981-08-17
Abstract
No abstract record available.
Inventors
- 👤 Robert R Bockemuehl
- 👤 James E Kauppila
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:37
CPC Classifications
H; H10; H10D; H10D99/00; H10D30/00; H10D30/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
IN A PHOTOSENSITIVE FIELD-EFFECT TRANSISTOR, A UNITARY, ELONGATED BODY OF RELATIVELY PURE HIGH ENERGY GAP, LOW MOBILITY, PHOTOCONDUCTIVE-TYPE MATERIAL, A RELATIVELY THIN SURFACE DIFFUSION ZONE ON SAID BODY HAVING A GENERALLY BALANCED CONCENTRATION OF DONOR AND ACCEPTOR IMPURITIES ENHANCING PHOTOCONDUCTIVITY OF SAID ZONE, SOURCE AND DRAIN OHMIC CONTACTS TO SAID ZONE, AND A GATE ELECTRODE IN BLOCKING CONTACT WITH SAID DIFFUSION ZONE FOR REGULATING CURRENT FLOW IN THE DIFFUSION ZONE.
Claim 2
Dependent Claim
70 words
IN A PHOTOSENSITIVE FIELD-EFFECT TRANSISTOR, A UNITARY, ELONGATED BODY OF RELATIVELY PURE HIGH ENERGY GAP, LOW MOBILITY, PHOTOCONDUCTIVE-TYPE MATERIAL, A RELATIVELY THIN SURFACE DIFFUSION ZONE ON SAID BODY HAVING A GENERALLY BALANCED CONCENTRATION OF DONOR AND ACCEPTOR IMPURITIES ENHANCING PHOTOCONDUCTIVITY OF SAID ZONE, SOURCE AND DRAIN OHMIC CONTACTS TO SAID ZONE, AND A GATE ELECTRODE IN BLOCKING CONTACT WITH SAID DIFFUSION ZONE FOR REGULATING CURRENT FLOW IN THE DIFFUSION ZONE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |