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US3507933A
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Self-extinguishing polyester compositions of 2,2-bis(bromomethyl)-1,3-propanediol and method of making the same
Assignee: Dow Chemical Co
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Filing: 1967-03-03
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Granted: 1970-04-21
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Expires: 1987-03-03
Abstract
No abstract record available.
Inventors
- 👤 Eric R Larsen
- 👤 Bernard R Andrejewski
- 👤 Donald L Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:19
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/06; C08F; C08F283/00; C08F283/01; C08G; C08G63/00; C08G63/68; C08G63/682; C08G63/6824; C08G63/6828
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA630861A
Cited
US2140481A
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GB824491A
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US2822340A
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US3060146A
Cited
SU138051A1
Cited
US3285995A
Cited
US3274293A
Cited
US3387060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-20 | 1973-10-20 | 1974-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-20 | 1977-10-20 | 1978-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-20 | 1981-10-20 | 1982-04-21 | $7700.00 | Window Closed / Lapsed |