US3555667A
Expired / Lapsed
US
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High temperature,electrically conductive hermetic seals
Assignee: Westinghouse Electric Corp
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Filing: 1968-10-08
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Granted: 1971-01-19
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Expires: 1988-10-08
Abstract
Abstract Structural members are joined together by a high temperature, electrically conductive hermetic seal comprising an outer layer of platinum having intimate contact with, and good adhesion to, one of the structural members to be joined together, an inner layer of platinum having intimate contact with, and good adhesion to, the other structural member to be joined together, a layer of a metal whose initial composition before formation of the seal is gold or 18 percent by weight of nickel and the remainder gold centrally disposed between, joined to, and alloyed with the inner and outer layers of platinum by respective intermediated metal layers comprising gold.
Inventors
- 👤 William G Carlson
- 👤 Christy J Moratis
- 👤 William A English
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:51
CPC Classifications
F; F16; F16L; F16L25/00; F16L25/01; H; H01; H01M; H01M8/00; H01M8/24; H01M8/2404; H01M8/241; H01M8/2425; H01M8/243; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12611; Y10T428/12618; Y10T428/12771; Y10T428/12861; Y10T428/12882; Y10T428/12889
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |