US3573204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating high strength,self-lubricating materials
Assignee: Boeing Co
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Filing: 1969-11-14
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Granted: 1971-03-30
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Expires: 1989-11-14
Abstract
Abstract COMPACTION OF A POWDERED MIXTURE OF GROUP V-B, VI-B OR RARE EARTH CHALCOGENIDES AND A REFRACTORY METAL UNDER SUFFICIENT HEAT AND PRESSURE TO SINTER THE POWDER MIXTURE AND TO REACT AT LEAST SOME OF THE REFRACTORY METAL WITH CARBON TO FORM A METAL MATRIX SOLID LUBRICANT COMPOSITE CONTAINING A REFRACTORY METAL CARBIDE. GRAPHITE DIES MAY BE USED TO PROVIDE CARBIDE FORMATION.
Inventors
- 👤 Jan W Van Wyk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:18
CPC Classifications
H; H01; H01B; H01B1/00; C; C10; C10M; C10M7/00; F; F16; F16N; F16N15/00; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/042; C10M2201/05; C10M2201/06; C10M2201/061; C10M2201/065; C10M2201/066; C10M2201/16; C10M2201/18; C10N; C10N2040/00; C10N2040/02; C10N2040/14; C10N2040/16; C10N2040/17; C10N2040/175; C10N2040/18; C10N2040/185; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50; C10N2050/00; C10N2050/08; C10N2050/10
Claims Analysis
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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) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |