Patent US3249596A successfully refreshed from Google Patents.
US3249596A
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Fluorinated cyclic esters and polymers thereof
Assignee: Dow Silicones Corp
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Filing: 1964-02-07
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Granted: 1966-05-03
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Expires: 1984-02-07
Abstract
No abstract record available.
Inventors
- 👤 Ogden R Pierce
- 👤 George A Grindahl
- 👤 Anthony J Butler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:50
CPC Classifications
C; C07; C07C; C07C31/00; C07C31/34; C07C31/44; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/22
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
8 words
A POLYMER COMPRISING UNITS OF THE FOLLOWING FORMULA
References Cited (Backward Citations)
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Cited
US2628958A
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US2597843A
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US2642416A
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US3025279A
Cited
US2839513A
Cited
US3030409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |