Patent US3075892A successfully refreshed from Google Patents.
US3075892A
Expired / Lapsed
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Process for making semiconductor devices
Assignee: Westinghouse Electric Corp
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Filing: 1959-09-15
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Granted: 1963-01-29
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Expires: 1979-09-15
Abstract
No abstract record available.
Inventors
- 👤 Harold F John
- 👤 Jr John W Faust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:47
CPC Classifications
H; H10; H10P; H10P14/00; H10P14/40; H10P14/46; H10P14/47; C; C23; C23C; C23C18/00; C23C18/16; C23C18/1601; C23C18/1603; C23C18/1607; C23C18/1608; C23C18/1633; C23C18/1689; C23C18/1692; C23C18/18; C23C18/1851; C23C18/1855; C23C18/54; C25; C25D; C25D5/00; C25D5/02; C25D5/34; C25D7/00; C25D7/12; H10P95/00; C23C18/1646; C23C18/165; C23C18/1653; C23C18/1655; C23C18/1664; C23C18/1667; Y; Y10; Y10S; Y10S438/00; Y10S438/907
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
127 words
IN THE FABRICATION OF A SEMICONDUCTOR DEVICE THE STEPS CONSISTING OF, ABRADING A PREDETERMINED PORTION OF AT LEAST ONE SURFACE OF A BODY OF A SEMICODUCTOR MATERIAL HAVING SURFACE UPON WHICH ADHERENT COATING ARE NOT READILY PLATABLE, PLATING AT LEAST ONE ADHERENT LAYER OF A SUITABLE DOPING MATERIAL UPON ONLY SAID ENTIRE ABRADED PORTION WITHOUT MASKING ANY PORTION OF THE BODY, THE PLATING DEPOSITING PREFERENTIALY ON THE ABRADED SURFACE ONLY, PLATING AT LEAST ONE AHERENT LAYER OF A SUITABLE OHMIC CONTACT METAL OVER ONLY SAID DOPING MATERIAL WITHOUT MASKING ANY PORTION OF THE BODY, BODY AND ALLOYING SAID DOPING MATERIAL INTO SAID BODY OF SEMICONDUCTOR MATERIAL TO PROVIDE A BODY OF SEMICONDUCTOR MATERIAL HAVING A P-N JUNCTION THREIN AND AN OHMIC CONTACT ATTACHED TO A REGION THREOF.
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) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |