US3655609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Binder mixture for friction elements comprising phenolic resin and precipitated silicate
Assignee: BP Chemicals Ltd
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Filing: 1969-09-30
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Granted: 1972-04-11
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Expires: 1989-09-30
Abstract
Abstract BINDER RESIN COMPOSITIONS FOR THE PREPARATION OF FRICTION ELEMENTS E.G. BRAKE AND CLUTCH LININGS HAVING GOOD HOT WEAR PROPERTIES COMPRISE FROM 5 TO 95 PARTS BY WEIGHT OF A PHENOLIC RESIN AND FROM 95 TO 5 PARTS BY WEIGHT OF A PRECIPITATED ALKALI METAL SILCATE. THE RESINS MAY BE COMPOUNDED WITH CONVENTIONAL ADDITIVES, E.G. ASBESTOS AND BARYTES AND MOULDED UNDER HEAT AND PRESSURE TO FORM FRICTION ELEMENTS.
Inventors
- 👤 Edward Michael Evans
- 👤 Kerry David Jeffreys
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:57
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/025; C; C08; C08K; C08K3/00; C08K3/34
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) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |