US3208962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of acrylonitrile polymer solution
Assignee: Teijin Ltd
•
Filing: 1960-12-28
•
Granted: 1965-09-28
•
Expires: 1980-12-28
Abstract
No abstract record available.
Inventors
- 👤 Taniyama Masakazu
- 👤 Nakajima Michiaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:30
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/42; C08F20/44; C08F2/00; C08F2/12; C08F2/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2777832A
Cited
US2837492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |