US3732339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filaments and films of acrylonitrile polymers which are free from vacuoles
Assignee: Bayer AG
•
Filing: 1971-03-25
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Granted: 1973-05-08
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Expires: 1991-03-25
Abstract
Abstract VACUOLE FREE FILAMENTS AND FILMS OF ACRYLONITRILE HOMOPOLYMERS AND COPOLYMERS CONTAINING AT LEAST 80% ACRYLONITRILE, WHICH CONTAIN 0.1 TO 4% OF A COPOLYMER OF ACRYLONITRILE AND DIMETHYLACRYLAMIDE.
Inventors
- 👤 C Suling
- 👤 H Logemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:05
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/02; D01F6/18; C; C08; C08L; C08L33/00; C08L33/18; C08L33/20; D01F6/28; D01F6/38; Y; Y10; Y10S; Y10S525/00; Y10S525/916
Claims Analysis
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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) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |