Patent US3365779A successfully refreshed from Google Patents.
US3365779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic-metal seal
Assignee: Raytheon Co
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Filing: 1964-02-20
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Granted: 1968-01-30
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Expires: 1984-02-20
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 18:58
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/32; C; C04; C04B; C04B37/00; C04B37/02; C04B37/023; C04B37/026; C04B2235/00; C04B2235/65; C04B2235/656; C04B2235/6567; C04B2235/66; C04B2235/661; C04B2237/00; C04B2237/02; C04B2237/12; C04B2237/122; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/343; C04B2237/36; C04B2237/365; C04B2237/40; C04B2237/403; Y; Y10; Y10S; Y10S228/00; Y10S228/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A METHOD OF MAKING A CERAMIC-METAL SEAL BETWEEN A BODY WHICH CONTAINS ALUMINA CERAMIC AND A BODY WHICH CONTAINS TUNGSTEN WHICH COMPRISES THE STEPS OF: (A) BRINGING A BODY OF TUNGSTEN METAL INTO CONTACT WITH A TITANIUM SHEET WHICH IS IN TURN IN CONTACT WITH AN ALUMINA CERAMIC; (B) ENCLOSING THE CONTACT MATERIALS IN AN INERT ATMOSPHERE; (C) RAISING THE TEMPERATURE OF THE CONTACTED MATERIALS TO ABOVE ABOUT 1800*C., TO BOND THE TUNGSTEN METAL TO THE ALUMINA CERAMIC AT THEIR ZONES OF CONTACT WITH THE INSERTED TITANIUM SHEET.
Claim 2
Independent Claim
88 words
A METHOD OF MAKING A CERAMIC-METAL SEAL BETWEEN A BODY WHICH CONTAINS ALUMINA CERAMIC AND A BODY WHICH CONTAINS TUNGSTEN WHICH COMPRISES THE STEPS OF: (A) BRINGING A BODY OF TUNGSTEN METAL INTO CONTACT WITH A TITANIUM SHEET WHICH IS IN TURN IN CONTACT WITH AN ALUMINA CERAMIC; (B) ENCLOSING THE CONTACT MATERIALS IN AN INERT ATMOSPHERE; (C) RAISING THE TEMPERATURE OF THE CONTACTED MATERIALS TO ABOVE ABOUT 1800*C., TO BOND THE TUNGSTEN METAL TO THE ALUMINA CERAMIC AT THEIR ZONES OF CONTACT WITH THE INSERTED TITANIUM SHEET.
References Cited (Backward Citations)
CA560281A
Cited
US1014757A
Cited
US2167431A
Cited
US3055465A
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US3142886A
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US3074143A
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US3243313A
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US3139680A
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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) | 1971-01-29 | 1971-07-31 | 1972-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-29 | 1975-07-31 | 1976-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-29 | 1979-07-31 | 1980-01-30 | $7700.00 | Window Closed / Lapsed |