Patent US3380976A successfully refreshed from Google Patents.
US3380976A
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Method of producing acrylonitrile polymers in the presence of a catalyst comprising octanoyl peroxide or t-butyl peroxypivalate and using as a solvent dimethylsulfoxide or ethylene carbonate
Assignee: Toray Industries Inc
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Filing: 1964-10-15
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Granted: 1968-04-30
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Expires: 1984-10-15
Abstract
No abstract record available.
Inventors
- 👤 Izumi Zenzi
- 👤 Kitagawa Hideji
- 👤 Shinto Masakatu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:37
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/42; C08F20/44; C08F2/00; C08F2/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3060157A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |