US3763120A
Expired / Lapsed
US
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Copolymers of alkyl styrenes and nvinyl heterocyclic monomers and inverse suspension polymerization using the same
Assignee: Dow Chemical Co
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Filing: 1971-10-13
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Granted: 1973-10-02
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Expires: 1991-10-13
Abstract
Abstract THIS INVENTION RELATES TO A NEW INTERPOLYMERIC COMPOSITION OF MATTER AND PARTICULARLY TO COPOLYMERS OF CERTAIN ALKYL SUBSTITUTED ALKENYL AROMATIC MONOMERS AND N-VINYL HETERCOYCLIC MONOMERS. THE NEW COMPOLYMERS FIND UTILITY AS SUSPENDING AGENTS FOR WATER-IN-OIL DISPERSIONS AND AS WATER DISPERSIBLE COATINGS.
Inventors
- 👤 B Atkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:46
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/06; H01C17/20; C; C08; C08F; C08F2/00; C08F2/32; C08F26/00; C08F26/06; C10; C10M; C10M3/00
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) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |