US3682800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing acrylonitrile copolymers
Assignee: Toray Industries Inc
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Filing: 1970-07-09
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Granted: 1972-08-08
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Expires: 1990-07-09
Abstract
Abstract PHOTOCOPOLYMERIZATION OF ACRYLONITRILE AND VINYLIDENE CHLORIDE, COMPRISING PROJECTING LIGHT ONTO THESE REACTANTS IN AN ORGANIC SOLVENT IN THE PRESENCE OF HYDROGEN PEROXIDE.
Inventors
- 👤 Hajime Miyama
- 👤 Noriho Harumiya
- 👤 Mituru Nakao
- 👤 Mutsumi Kimura
- 👤 Isao Ito
- 👤 Katunori Ohgushi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:49
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/42; C08F220/44; C08F20/00; C08F20/02; C08F20/42; F; F02; F02B; F02B75/00; F02B75/10; F02M; F02M2700/00; F02M2700/34
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) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |