Patent US2852554A successfully refreshed from Google Patents.
US2852554A
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Alpha-sulfopolyfluoromonocarboxylic acids and derivatives hydrolyzable thereto
Assignee: EIDP Inc
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Filing: 1956-07-12
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Granted: 1958-09-16
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Expires: 1976-07-12
Abstract
No abstract record available.
Inventors
- 👤 David C England
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:10
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/16; C07D295/18; C07D295/182; C07D295/185; C07C; C07C309/00; C07C309/01; C07C309/02; C07C309/03; C07C309/13; C07C309/14; C07C309/15; C07C309/17; C07C309/63; C07C309/64; C07C309/65; C07C309/78; C07C309/79; C07C309/84; C07C311/00; C07C311/01; C07C311/02; C07C311/03; C07C311/06; C07C331/00; C07C331/02; C07C331/04; C07D327/00; C07D327/02; Y; Y10; Y10S; Y10S8/00; Y10S8/93
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A MEMBER OF THE CLASS CONSISTING OF SATURATED A-SULFOPOLYFLUOROMONOCARBOXYLIC ACIDS AND DERIVATIVES THEREOF HYDROLYZABLE THERETO, SAID ACIDS HAVING THE SULFO GROUPS, THE CARBOXYL GROUP AND AT LEAST ONE FLUORINE ATTACHED TO THE TERMINAL CARBON OF A SATURATED POLYFLUOROCARBON RADICAL, AND HAVING, IN ADDITION TO FLUORINE AND CARBON IN SAID RADICAL, AT MOST ONE OTHER ATOM AND THAT HYDROGEN ON THE OMEGA CARBON.
Claim 2
Dependent Claim
62 words
A MEMBER OF THE CLASS CONSISTING OF SATURATED A-SULFOPOLYFLUOROMONOCARBOXYLIC ACIDS AND DERIVATIVES THEREOF HYDROLYZABLE THERETO, SAID ACIDS HAVING THE SULFO GROUPS, THE CARBOXYL GROUP AND AT LEAST ONE FLUORINE ATTACHED TO THE TERMINAL CARBON OF A SATURATED POLYFLUOROCARBON RADICAL, AND HAVING, IN ADDITION TO FLUORINE AND CARBON IN SAID RADICAL, AT MOST ONE OTHER ATOM AND THAT HYDROGEN ON THE OMEGA CARBON.
References Cited (Backward Citations)
GB662572A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |