Patent US3363151A successfully refreshed from Google Patents.
Patent US3254403A successfully refreshed from Google Patents.
US3254403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic-metal seal
Assignee: Raytheon Co
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Filing: 1964-11-24
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Granted: 1966-06-07
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Expires: 1984-11-24
Abstract
No abstract record available.
Inventors
- 👤 Archie G Buyers
- 👤 Jr Augustus J Mohr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:11
CPC Classifications
C; C04; C04B; C04B37/00; C04B37/02; C04B37/021; C04B35/00; C04B35/01; C04B35/48; C04B2235/00; C04B2235/65; C04B2235/656; C04B2235/6562; C04B2235/658; C04B2235/6581; C04B2237/00; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/345; C04B2237/348; C04B2237/40; C04B2237/403
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A MEHTOD OF MAKING A CERAMIC-METAL SEAL WHICH COMPRISES THE STEPS OF: BRINGING A BODY OF TANTALUM BASE REFRACTORY METAL INTO CONTACT WITH A BODY OF STABILIZED ZIRCONIA-CONTAINING CERAMIC CONTAINING MORE THAN ABOUT 10 MOLE PERCENT ZIRCONIA; ENCLOSING THE CONTACTED BODIES IN AN INERT ATMOSPHERE; AND RAISING THE TEMPERATURE OF THE CONTACTED BODIES TO A VALUE ABOVE ABOUT 2200*K. TO BOND THE BODY OF TANTALUM BASE METAL TO THE BODY OF STABILIZED ZIRCONIA-CONTAINING CERAMIC AT THE ZONE OF CONTACT.
Claim 2
Dependent Claim
79 words
A MEHTOD OF MAKING A CERAMIC-METAL SEAL WHICH COMPRISES THE STEPS OF: BRINGING A BODY OF TANTALUM BASE REFRACTORY METAL INTO CONTACT WITH A BODY OF STABILIZED ZIRCONIA-CONTAINING CERAMIC CONTAINING MORE THAN ABOUT 10 MOLE PERCENT ZIRCONIA; ENCLOSING THE CONTACTED BODIES IN AN INERT ATMOSPHERE; AND RAISING THE TEMPERATURE OF THE CONTACTED BODIES TO A VALUE ABOVE ABOUT 2200*K. TO BOND THE BODY OF TANTALUM BASE METAL TO THE BODY OF STABILIZED ZIRCONIA-CONTAINING CERAMIC AT THE ZONE OF CONTACT.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |