Patent US3351826A successfully refreshed from Google Patents.
US3351826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Five-region, three electrode, symmetrical semiconductor device, with resistive means connecting certain regions
Assignee: Individual
•
Filing: 1963-02-05
•
Granted: 1967-11-07
•
Expires: 1983-02-05
Abstract
No abstract record available.
Inventors
- 👤 Leroy N Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:08
CPC Classifications
H; H10; H10D; H10D18/00; H10D18/80; H10W; H10W74/00; H10W74/10; H10W74/131
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
95 words
A SYMMETRICAL FIVE LAYER CONTROLLED CONDUCTIVE DEVICE COMPRISING A BASE LAYER OF ONE CONDUCTIVITY TYPE, A REGION ON AN OPPOSITE CONDUCTIVITY TYPE ON EACH OF THE OPPOSITE MAJOR FACES OF THE BASE LAYER, A REGION OF THE ONE CONDUCTIVITY TYPE IN EACH OF THE REGIONS OF THE OPPOSITE CONDUCTIVITY TYPE, ELECTRODE MEANS CONNECTED TO EACH OF THE REGIONS OF THE ONE CONDUCTIVITY TYPE, MEANS PROVIDING AN OHMIC CONTACT TO THE BASE LAYER, AND A PAIR OF RESISTIVE MEANS CONNECTED BETWEEN THE BASE LAYER AND DIFFERENT ONES OF THE ADJACENT REGIONS OF THE OPPOSITE CONDUCTIVITY TYPE.
References Cited (Backward Citations)
US2891171A
Cited
US2936384A
Cited
US2980810A
Cited
FR1267417A
Cited
US3140963A
Cited
GB901239A
Cited
US3260901A
Cited
US3123750A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |