Patent US3558488A successfully refreshed from Google Patents.
US3558488A
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Protective and lubricating composition
Assignee: Boeing North American Inc
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Filing: 1968-03-07
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Granted: 1971-01-26
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Expires: 1988-03-07
Abstract
Abstract A COMPOSITION COMPRISING A MIXTURE OF BORON NITRIDE POWDER AND COLLOIDAL SILICA IN A SUBSTANTIALLY VOLATILE CARRIER IS DESCRIBED. THIS MATERIAL IS COATED ON A BERYLLIUM SURFACE AND THE VOLATILE CARRIER EVAPORATED TO LEAVE A DRY FILM LUBRICANT. THE DRY FILM LUBRICANT IS PARTICULARLY USEFUL FOR HIGH TEMPERATURE FORMING A BERYLLIUM AND IN ADDITION PROVIDES OXIDATION PROTECTION THEREBY OBVIATING NEED FOR A PROTECTIVE ENVIRONMENT AND MINIMIZING SAFETY HAZARDS.
Inventors
- 👤 Howard G Mann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:51
CPC Classifications
C; C10; C10M; C10M7/00; C23; C23C; C23C24/00; C10M2201/00; C10M2201/06; C10M2201/061; C10M2201/063; C10M2201/085; C10M2201/10; C10M2201/102; C10M2201/103; C10M2201/105; C10M2201/16; C10M2201/18; C10M2209/00; C10M2209/12; C10N; C10N2010/00; C10N2010/02; C10N2040/00; C10N2040/20; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247; C10N2050/00; C10N2050/015; C10N2050/02; C10N2050/08; C10N2050/10
Claims Analysis
Total Claims: 0
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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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |