US3000085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plating of sintered tungsten contacts
Assignee: Westinghouse Electric Corp
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Filing: 1958-06-13
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Granted: 1961-09-19
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Expires: 1978-06-13
Abstract
No abstract record available.
Inventors
- 👤 William B Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:37
CPC Classifications
H; H10; H10P; H10P14/00; H10P14/40; H10P14/46; H10P14/47; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S428/9335; Y10S428/934; Y10S428/935; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12069; Y10T428/12076; Y10T428/12493; Y10T428/12528; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/1284; Y10T428/12861; Y10T428/12889; Y10T428/12896
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
IN A SEMICONDUCTOR DEVICE COMPRISING A TUNGSTEN BASE CONTACT MEMBER, THE IMPROVEMENT COMPRISING SAID TUNGSTEN BASE CONTACT MEMBER HAVING AT LEAST A FIRST LAYER OF SINTERED COPPER DISPOSED ABOUT AND COMPLETELY COVERING ITS SURFACE, AND AT LEAST A SECOND ELECTRODEPOSITED LAYER OF A METAL SELECTED FROM AT LEAST ONE OF THE GROUP-CONSISTING OF GOLD AND SILVER DISPOSED ABOUT AND COMPLETELY COVERING THE COPPER.
Claim 2
Dependent Claim
63 words
IN A SEMICONDUCTOR DEVICE COMPRISING A TUNGSTEN BASE CONTACT MEMBER, THE IMPROVEMENT COMPRISING SAID TUNGSTEN BASE CONTACT MEMBER HAVING AT LEAST A FIRST LAYER OF SINTERED COPPER DISPOSED ABOUT AND COMPLETELY COVERING ITS SURFACE, AND AT LEAST A SECOND ELECTRODEPOSITED LAYER OF A METAL SELECTED FROM AT LEAST ONE OF THE GROUP-CONSISTING OF GOLD AND SILVER DISPOSED ABOUT AND COMPLETELY COVERING THE COPPER.
References Cited (Backward Citations)
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Cited
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US2429222A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |