Patent US3642944A successfully refreshed from Google Patents.
US3642944A
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Fire retardant polyesters and articles made therefrom
Assignee: Sherwin Williams Co
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Filing: 1970-07-01
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Granted: 1972-02-15
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Expires: 1990-07-01
Abstract
Abstract FIRE RETARDANT POLYESTER COMPOSITIONS ARE MADE BY THE REACTION OF A BROMINATED POLYOL AND A CHLORINATED AROMATIC DIBASIC ACID IN WHICH THE WEIGHT RATIO OF CHLORINE TO BROMINE IS IN THE RANGE FROM ABOUT 2:1 TO ABOUT 6:1, AND A VINYL MONOMER.
Inventors
- 👤 Austin C Abbott Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:22
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/682; C08G63/6824; C08G63/6828; Y; Y10; Y10S; Y10S260/00; Y10S260/24
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) | 1975-02-14 | 1975-08-16 | 1976-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-14 | 1979-08-16 | 1980-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-14 | 1983-08-16 | 1984-02-15 | $7700.00 | Window Closed / Lapsed |