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Patent US3379670A successfully refreshed from Google Patents.
US3379670A
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Process for preparation of spinnable solutions of acrylonitrile polymers or copolymers having a high-acrylonitrile content
Assignee: SNIA Viscosa SpA
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Filing: 1967-08-09
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Granted: 1968-04-23
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Expires: 1987-08-09
Abstract
No abstract record available.
Inventors
- 👤 Corradi Demetrio
- 👤 Pasin Alberto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:06
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08F; C08F2/00; C08F2/36; C08F20/00; C08F20/02; C08F20/42; C08F20/44; C08J; C08J9/00; C08J9/24; C09; C09D; C09D175/00; C09D175/04
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) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |