Patent US3827993A successfully refreshed from Google Patents.
US3827993A
Expired / Lapsed
US
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Liquid polyol compositions
Assignee: Sherwin Williams Co
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Filing: 1972-06-14
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Granted: 1974-08-06
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Expires: 1992-06-14
Abstract
Abstract THIS INVENTION IS DIRECTED TO LIQUID POLYOLS OBTAINED BY REACTING AT LEAST ONE POLYHYDROXY COMPOUND, E.G. GLYCOL WITH AN EPOXIDIZED FATTY OIL OR EPOXIDIZED FATTY-ACID ESTER, AND ONE OR MORE CARBOXYLIC ACIDS OR DERIVATIVES THEREOF, THE POLYOLS ARE PARTICULARLY USEFUL IN PREPARING FILMS, COATINGS, PLASTIC COMPOSITIONS AND THE LIKE
Inventors
- 👤 A Cunningham
- 👤 W Yapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:52
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/46; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/4288; C08G63/40; C08G63/42; C08G2110/00; C08G2110/0025; C08G2110/0083
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) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |