US3409839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for minimizing the effects of ionizing radiation on semiconductor circuits
Assignee: Boeing North American Inc
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Filing: 1965-08-04
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Granted: 1968-11-05
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Expires: 1985-08-04
Abstract
No abstract record available.
Inventors
- 👤 John W Crowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:25
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A METHOD FOR AT LEAST PARTIALLY ELIMINATING THE EFFECTS OF A PHOTOCURRENT INDUCED IN A SEMICONDUCTOR JUNCTION IN A CIRCUIT BY IONIZING RADIATION INCIDENT THEREON COMPRISING THE STEPS OF GENERATING A COMPENSATING CURRENT IN RESPONSE TO IONIZING RADIATION WHICH IS ESSENTIALLY EQUAL TO SAID INDUCED PHOTOCURRENT AND INTRODUCING SAID COMPENSATING CURRENT INTO SAID CIRCUIT TO ESSENTIALLY NEUTRALIZE THE EFFECTS OF SAID INDUCED PHOTOCURRENT CURRENT IN SAID SEMICONDUCTOR.
Claim 2
Independent Claim
67 words
A METHOD FOR AT LEAST PARTIALLY ELIMINATING THE EFFECTS OF A PHOTOCURRENT INDUCED IN A SEMICONDUCTOR JUNCTION IN A CIRCUIT BY IONIZING RADIATION INCIDENT THEREON COMPRISING THE STEPS OF GENERATING A COMPENSATING CURRENT IN RESPONSE TO IONIZING RADIATION WHICH IS ESSENTIALLY EQUAL TO SAID INDUCED PHOTOCURRENT AND INTRODUCING SAID COMPENSATING CURRENT INTO SAID CIRCUIT TO ESSENTIALLY NEUTRALIZE THE EFFECTS OF SAID INDUCED PHOTOCURRENT CURRENT IN SAID SEMICONDUCTOR.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |