US3751520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane compositions containing polyvinylidene fluoride
Assignee: BASF Corp
•
Filing: 1972-02-07
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Granted: 1973-08-07
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Expires: 1992-02-07
Abstract
Abstract THE COEFFICIENT OF FRICTION OF A POLYURETHANE ELASTOMER IS REDUCED BY ADDING THERETO FROM ABOUT 5 PARTS TO ABOUT 20 PARTS BY WEIGHT BASED ON THE TOTAL WEIGHT OF THE RESULTING COMPOSITION OF A HOMOPOLYMERIC VINYLIDENE FLUORIDE RESIN.
Inventors
- 👤 T Yasuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:18
CPC Classifications
C; C08; C08L; C08L75/00; C08L75/04; Y; Y10; Y10S; Y10S528/00; Y10S528/906
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |