Patent US3761441A successfully refreshed from Google Patents.
US3761441A
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Thermosetting friction compositions and friction elements thereof containing an acrylimide resin
Assignee: Lyondell Chemical Technology LP
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Filing: 1972-02-02
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Granted: 1973-09-25
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Expires: 1992-02-02
Abstract
Abstract THERMOSETTING FRICTION COMPOSITIONS HAVE BEEN DEVELOPED BY COMBINING PARTICULATE FRICTION MATERIALS WITH THERMOSETTING BINDERS CONSISTING OF EITHER AN ARYLIMIDE RESIN ALONE OR A COMBINATION OF AN ARYLIMIDE RESIN AND A PHENOL-AIDEHYDE CONDENSATION RESIN.
Inventors
- 👤 Alessandro W D
- 👤 G Brode
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:40
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/025; C; C08; C08G; C08G65/00; C08G65/34; C08G65/38; C08G65/40; C08G65/4006; C08G75/00; C08G75/20; C08G75/23; C08L; C08L79/00; C08L79/04; C08L79/08; C08L79/085; F16D69/021; F16D69/022; C08L61/00; C08L61/04; C08L61/06
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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |