Patent US3159780A successfully refreshed from Google Patents.
US3159780A
Expired / Lapsed
US
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Semiconductor bridge rectifier
Assignee: Tektronix Inc
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Filing: 1961-06-19
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Granted: 1964-12-01
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Expires: 1981-06-19
Abstract
No abstract record available.
Inventors
- 👤 Paul F Parks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:11
CPC Classifications
H; H10; H10D; H10D99/00; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/06; H10W; H10W10/00; H10W10/01; H10W10/021; H10W10/20; Y; Y10; Y10S; Y10S257/00; Y10S257/909
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A FULL WAVE RECTIFIER HAVING A LURALITY OF MATCHED SEMICONDUCTOR DIODES COMPRISING: A BODY OF SEMICONDUCTOR MATERIAL HAVING AT LEAST ONE REGION OF P-TYPE CONDUCTIVITY AND AT LEAST ONE REGION OF N-TYPE CONDUCTIVITY WITH A RESISTIVITY GRADIENT IN AT LEAST ONE OF SAID REGIONS, SAID BODY BEING SHAPED WITH AT LEAST ONE NOTCH THEREIN TO DIVIDE ONE OF SAID REGIONS INTO TWO SEPARATE PORTIONS IN ORDER TO FORM A PAIR OF PN JUNCTION DIODES HAVING SIMILAR RECTIFYING CHARACTERISTICS FOR EACH REGION SO DIVIDED, AND A PLURALITY OF OHMIC CONTACTS CONNECTED TO EACH OF THE CONDUCTIVE PORTIONS OF SAID BODY IN A MANNER SO THAT ELECTRICAL CURRENT MAY FLOW THROUGH EACH PN JUNCTION IN SAID BODY IN ORDER TO CONVERT A.C. VOLTAGE INTO SUBSTANTIALLY D.C. VOLTAGE.
Claim 2
Dependent Claim
125 words
A FULL WAVE RECTIFIER HAVING A LURALITY OF MATCHED SEMICONDUCTOR DIODES COMPRISING: A BODY OF SEMICONDUCTOR MATERIAL HAVING AT LEAST ONE REGION OF P-TYPE CONDUCTIVITY AND AT LEAST ONE REGION OF N-TYPE CONDUCTIVITY WITH A RESISTIVITY GRADIENT IN AT LEAST ONE OF SAID REGIONS, SAID BODY BEING SHAPED WITH AT LEAST ONE NOTCH THEREIN TO DIVIDE ONE OF SAID REGIONS INTO TWO SEPARATE PORTIONS IN ORDER TO FORM A PAIR OF PN JUNCTION DIODES HAVING SIMILAR RECTIFYING CHARACTERISTICS FOR EACH REGION SO DIVIDED, AND A PLURALITY OF OHMIC CONTACTS CONNECTED TO EACH OF THE CONDUCTIVE PORTIONS OF SAID BODY IN A MANNER SO THAT ELECTRICAL CURRENT MAY FLOW THROUGH EACH PN JUNCTION IN SAID BODY IN ORDER TO CONVERT A.C. VOLTAGE INTO SUBSTANTIALLY D.C. VOLTAGE.
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) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |