US3343050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High voltage rectifier having controlled current leakage
Assignee: Westinghouse Electric Corp
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Filing: 1965-05-24
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Granted: 1967-09-19
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Expires: 1985-05-24
Abstract
No abstract record available.
Inventors
- 👤 Robert L Eisner
- 👤 Horacio E Suarez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:55
CPC Classifications
H; H10; H10D; H10D99/00; H10D1/00; H10D1/40; H10D48/00; H10D48/30; H10D48/38; H10P; H10P95/00; H10P95/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A SEMICONDUCTOR DEVICE COMPRISING A BODY OF SINGLE CRYSTAL SEMICONDUCTOR MATERIAL, SAID BODY OF SINGLE CRYSTAL SEMICONDUCTOR MATERIAL HAVING A TOP SURFACE, A BOTTOM SURFACE AND A PERIPHERAL SHOULDER ABOUT, AND INTEGRAL WITH, SAID BOTTOM SURFACE, SAID PERIPHERAL SHOULDER BEING APPROXIMATELY 1 TO 1.5 MILLIMETERS IN WIDTH, SAID PERIPHERAL SHOULDER HAVING A TOP SURFACE OF LESSER PROPORTION THAN SAID TOP SURFACE OF SAID BODY, SAID BODY OF SINGLE CRYSTAL MATERIAL HAVING A FIRST LAYER OF A FIRST TYPE OF SEMICONDUCTIVITY, A SECOND LAYER OF A SECOND TYPE OF SEMICONDUTIVITY AND A P-N JUNCTION FORMED BY AN INTERFACE OF SAID FIRST LAYER WITH SAID SECOND LAYER, SAID FIRST LAYER OF FIRST TYPE OF SEMICONDUCTIVITY EXTENDING FROM SAID P-N JUNCTION TO SAID TOP SURFACE OF SAID BODY INCLUDING SAID TOP SURFACE OF SAID SHOULDER AND SAID SECOND LAYER OF SECOND TYPE SEMICONDUCTIVITY EXTENDING FROM SAID P-N JUNCTION TO SAID BOTTOM SURFACE OF SAID BODY INCLUDING THE BOTTOM SURFACE OF SAID SHOULDER.
Claim 2
Dependent Claim
159 words
A SEMICONDUCTOR DEVICE COMPRISING A BODY OF SINGLE CRYSTAL SEMICONDUCTOR MATERIAL, SAID BODY OF SINGLE CRYSTAL SEMICONDUCTOR MATERIAL HAVING A TOP SURFACE, A BOTTOM SURFACE AND A PERIPHERAL SHOULDER ABOUT, AND INTEGRAL WITH, SAID BOTTOM SURFACE, SAID PERIPHERAL SHOULDER BEING APPROXIMATELY 1 TO 1.5 MILLIMETERS IN WIDTH, SAID PERIPHERAL SHOULDER HAVING A TOP SURFACE OF LESSER PROPORTION THAN SAID TOP SURFACE OF SAID BODY, SAID BODY OF SINGLE CRYSTAL MATERIAL HAVING A FIRST LAYER OF A FIRST TYPE OF SEMICONDUCTIVITY, A SECOND LAYER OF A SECOND TYPE OF SEMICONDUTIVITY AND A P-N JUNCTION FORMED BY AN INTERFACE OF SAID FIRST LAYER WITH SAID SECOND LAYER, SAID FIRST LAYER OF FIRST TYPE OF SEMICONDUCTIVITY EXTENDING FROM SAID P-N JUNCTION TO SAID TOP SURFACE OF SAID BODY INCLUDING SAID TOP SURFACE OF SAID SHOULDER AND SAID SECOND LAYER OF SECOND TYPE SEMICONDUCTIVITY EXTENDING FROM SAID P-N JUNCTION TO SAID BOTTOM SURFACE OF SAID BODY INCLUDING THE BOTTOM SURFACE OF SAID SHOULDER.
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) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |