US3281931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature ceramic-metal seal
Assignee: Bendix Corp
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Filing: 1963-10-10
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Granted: 1966-11-01
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Expires: 1983-10-10
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Ritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:59
CPC Classifications
B; B22; B22F; B22F7/00; B22F7/06; B22F7/08; C; C04; C04B; C04B37/00; C04B37/02; C04B37/023; C04B37/025; C04B37/026; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/32; C04B2235/40; C04B2235/50; C04B2235/54; C04B2235/5418; C04B2235/5436; C04B2237/00; C04B2237/02; C04B2237/12; C04B2237/122; C04B2237/126; C04B2237/50; C04B2237/72
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
65 words
A METHOD OF MAKING A CERAMIC-METAL SEAL WHICH COMPRISES COATING A PREDETERMINED AREA OF A CERAMIC BODY WITH A MIXTURE IN THE FOLLOWING RANGES: 5 TO 0.25% YTTRIUM OXIDE AND 95.75% TUGSTEN POWDER FIRING SAID CERAMIC BODY AT A TEMPERATURE OVER 1450*C. TO SINTER AND MIXTURE WITH SAID CERAMIC BODY, PLATING SAID SINTERED AREA, AND BRAZING TO A METAL MEMBER TO FORM A VACCUM-TIGHT SEAL.
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) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |