US2903628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor rectifier devices
Assignee: RCA Corp
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Filing: 1955-07-25
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Granted: 1959-09-08
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Expires: 1975-07-25
Abstract
No abstract record available.
Inventors
- 👤 Lawrence J Giacoletto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:14
CPC Classifications
H; H10; H10D; H10D99/00; H10D1/00; H10D1/40; H10D48/00; H10D48/30; H10D48/38; H10P; H10P95/00; H10P95/50; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12528; Y10T428/12674
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A SEMICONDUCTIVE RECTIFIER DEVICE COMPRISING A SEMICONDUCTIVE WAFER HAVING OPPOSED FACES, A LARGE AREA OHMIC CONTACT UPON ONE FACE OF SAID WAFER AND A RECTIFYING ELECTRODE UPON THE OPPOSITE FACE OF SAID WAFER, A RECTIFYING BARRIER ASSOCIATED WITH SAID ELECTRODE AND SPACED FROM SAID OHMIC CONTACT A DISTANCE APPROXIMATELY EQUAL TO AND AT LEAST AS GREAT AS THE MAXIMUM THICKNESS OF THE DEPLETION LAYER ASSOCIATED WITH SAID BARRIER IN SAID WAFER, SAID WAFER HAVING A PRESELECTED MINIMUM RESISTIVITY.
Claim 2
Dependent Claim
78 words
A SEMICONDUCTIVE RECTIFIER DEVICE COMPRISING A SEMICONDUCTIVE WAFER HAVING OPPOSED FACES, A LARGE AREA OHMIC CONTACT UPON ONE FACE OF SAID WAFER AND A RECTIFYING ELECTRODE UPON THE OPPOSITE FACE OF SAID WAFER, A RECTIFYING BARRIER ASSOCIATED WITH SAID ELECTRODE AND SPACED FROM SAID OHMIC CONTACT A DISTANCE APPROXIMATELY EQUAL TO AND AT LEAST AS GREAT AS THE MAXIMUM THICKNESS OF THE DEPLETION LAYER ASSOCIATED WITH SAID BARRIER IN SAID WAFER, SAID WAFER HAVING A PRESELECTED MINIMUM RESISTIVITY.
References Cited (Backward Citations)
US2742383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |