Patent US3790645A successfully refreshed from Google Patents.
US3790645A
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US
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Method for producing polyvinylidene fluoride polymethylmethacrylate compositions
Assignee: Kureha Corp
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Filing: 1971-08-18
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Granted: 1974-02-05
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Expires: 1991-08-18
Abstract
Abstract METHOD FOR PRODUCING UNIFORMLY BLENDED POLYVINYLDENE FLUORIDE COMPOSITION, IN WHICH METHYLMETHACRYLATE AND/OR OTHER MONOMERS COPOLYMERIZABLE WITH METHYLMETHACRYLATE IS POST-POLYMERIZED WITH POLYVINYLIDENE FLUORIDE.
Inventors
- 👤 N Murayama
- 👤 M Fukuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:57
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/22; C08F; C08F259/00; C08F259/08
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) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |