US3295937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Titanium ceramic composite bodies
Assignee: General Electric Co
•
Filing: 1962-05-31
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Granted: 1967-01-03
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Expires: 1982-05-31
Abstract
No abstract record available.
Inventors
- 👤 John G Leschen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:02
CPC Classifications
C; C04; C04B; C04B37/00; C04B37/02; C04B37/023; C04B37/026; C04B35/00; C04B35/622; C04B35/64; C04B35/645; C04B2235/00; C04B2235/02; C04B2235/50; C04B2235/54; C04B2235/5418; C04B2235/5436; C04B2235/65; C04B2235/656; C04B2235/6567; C04B2237/00; C04B2237/02; C04B2237/12; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/343; C04B2237/40; C04B2237/403; C04B2237/50; C04B2237/74; C04B2237/76; C04B2237/765; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12611; Y10T428/12618; Y10T428/12771; Y10T428/12806
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A COMPOSITE BODY COMPRISING AT LEAST ONE BODY OF SUBSTANTIALLY PURE TITANIUM PERMANENTLY JOINED TO AT LEAST ONE VACUUM-TIGHT CRYSTALLING CERAMIC BODY BY MEANS OF A SOLDER JOINT TO FORM A VACUUM-TIGHT BOND, THE CERAMIC BODY CONSISTING ESSENTIALLY OF A FIRED MIXTURE OF MAGNESIA AND MAGNESIA-ALUMINA SPINEL AND TITANIA HAVING COMPOSITIONAL LIMITS BETWEEN 40 AND 60 PARTS OF MAGNESIA AND BETWEEN 60 AND 40 PARTS OF MAGNESIA-ALUMINA SPINEL, RESPECTIVELY, AND CONTAINING BETWEEN 0.05 PART AND 1.0 PART OF TITANIUM THE CERAMIC BODY BEING SUBSTANTIALLY SILICAFREE AND HAVING A COEFFICIENT OF THERMAL EXPANSION BETWEEN 25*C. AND 1000*C. OF ABOUT 9.0X10$$6 CENTIMETER PER CENTIMETER PER DEGREE C. TO ABOUT 11.0X10**-6 CENTIMETER PER CENTIMETER PER DEGREE C.
Claim 2
Dependent Claim
114 words
A COMPOSITE BODY COMPRISING AT LEAST ONE BODY OF SUBSTANTIALLY PURE TITANIUM PERMANENTLY JOINED TO AT LEAST ONE VACUUM-TIGHT CRYSTALLING CERAMIC BODY BY MEANS OF A SOLDER JOINT TO FORM A VACUUM-TIGHT BOND, THE CERAMIC BODY CONSISTING ESSENTIALLY OF A FIRED MIXTURE OF MAGNESIA AND MAGNESIA-ALUMINA SPINEL AND TITANIA HAVING COMPOSITIONAL LIMITS BETWEEN 40 AND 60 PARTS OF MAGNESIA AND BETWEEN 60 AND 40 PARTS OF MAGNESIA-ALUMINA SPINEL, RESPECTIVELY, AND CONTAINING BETWEEN 0.05 PART AND 1.0 PART OF TITANIUM THE CERAMIC BODY BEING SUBSTANTIALLY SILICAFREE AND HAVING A COEFFICIENT OF THERMAL EXPANSION BETWEEN 25*C. AND 1000*C. OF ABOUT 9.0X10$$6 CENTIMETER PER CENTIMETER PER DEGREE C. TO ABOUT 11.0X10**-6 CENTIMETER PER CENTIMETER PER DEGREE C.
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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |