US3210303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin bonded friction composition product and method
Assignee: American Brake Shoe Co
•
Filing: 1960-09-26
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Granted: 1965-10-05
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Expires: 1980-09-26
Abstract
No abstract record available.
Inventors
- 👤 Robert W Biggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:29
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
47 words
A HIGH COEFFICIENT OF FRICTION MATERIAL CHARACTERIZED BY LOW WEAR AND HIGH STRUCTURAL STRENGTH COMPRISING A BONDED AND CURED MIXTURE INITIALLY CONSISTING ESSENTIALLY OF ABOUT 72% POWDERED IRON, ABOUT 18% POWDERED GRAPHITE, ABOUT 9% POWDERED THERMOSETTING PHENOL FORMALDEHYDE RESIN, ABOUT 0.8% ALUMINA, AND ABOUT 0.2% STEARIC ACID.
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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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |