Patent US3553038A successfully refreshed from Google Patents.
US3553038A
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Method for formation of a titanium carbide surface layer on titanium and titanium alloy parts
Assignee: Centre Stephanois de Recherches Mecaniques Hydromecanique et Frottement SA
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Filing: 1968-10-21
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Granted: 1971-01-05
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Expires: 1988-10-21
Abstract
Abstract A METHOD OF FORMATION OF A LAYER OF TITANIUM CARBIDE AT THE SURFACE OF A COMPONENT OF TITANIUM OR TITANIUM ALLOY IN WHICH THE SAID COMPONENT IS ASSOCIATED WITH A FLUID MEDIUM HAVING A BASE OF A CARBON COMPOUND SUCH AS CARBON DISULPHIDE OR CARBON TETRACHLORIDE OR A MIXTURE OF THESE TWO, AND IS SUBJECTED IN SAID MEDIUM TO A HEAT TREATMENT OF SHORT DURATION BY HIGH FREQNENCY CURRENT, BRINGING THE SURFACE OF SAID COMPONENT TO A TEMPERATURE HIGHER THAN 1100*C. AND PREFERABLY HIGHER THAN 1350* C. THE INVENTION ALSO COMPRISES THE COMPONENTS OR PARTS MADE BY THIS METHOD.
Inventors
- 👤 Martin Marcel Marie Ader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:54
CPC Classifications
C; C23; C23C; C23C8/00; C23C8/06; C23C8/08; C23C8/20; C23C8/40; C23C8/42; C23C8/44
Claims Analysis
Total Claims: 0
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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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |