US2680717A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Salts of polymeric amines with perfluorocarboxylic acids
Assignee: EIDP Inc
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Filing: 1953-02-12
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Granted: 1954-06-08
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Expires: 1973-02-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Ernest Lewis Little
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:02
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/2222; C08; C08F; C08F8/00; C08F8/18; C10M; C10M1/00; C10M1/08; C08F2800/00; C08F2800/20; C08F2810/00; C08F2810/50; C10M2207/00; C10M2207/28; C10M2209/00; C10M2209/10; C10M2209/103; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/023; C10M2217/024; C10M2217/026; C10M2217/028; C10M2217/04; C10M2217/042; C10M2217/043; C10M2217/046; C10M2217/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
79 words
A SALT OF A HYDROCARBON OIL-SOLUBLE POLYMERIC AMINE CONTAINING AT LEAST 0.1% BY WEIGHT, OF AMINO NITROGEN AND HAVING A CARBON TO AMINO NITROGEN RATIO OF AT LEAST 7 TO 1 AND HAVING AN INHERENT VISCOSITY, DETERMINED AT 0.1% CONCENTRATION IN BENZENE AT 25* C., OF AT LEAST 0.1, WITH A PERFLUOROCARBOXYLIC ACID OF THE FORMULA X(CF2) NCOOH WHEREIN X IS FROM THE GROUP CONSISTING OF HYDROGEN AND FLUORINE, AND N IS AN INTEGER FROM 3 TO 20, INCLUSIVE.
Claim 2
Dependent Claim
79 words
A SALT OF A HYDROCARBON OIL-SOLUBLE POLYMERIC AMINE CONTAINING AT LEAST 0.1% BY WEIGHT, OF AMINO NITROGEN AND HAVING A CARBON TO AMINO NITROGEN RATIO OF AT LEAST 7 TO 1 AND HAVING AN INHERENT VISCOSITY, DETERMINED AT 0.1% CONCENTRATION IN BENZENE AT 25* C., OF AT LEAST 0.1, WITH A PERFLUOROCARBOXYLIC ACID OF THE FORMULA X(CF2) NCOOH WHEREIN X IS FROM THE GROUP CONSISTING OF HYDROGEN AND FLUORINE, AND N IS AN INTEGER FROM 3 TO 20, INCLUSIVE.
Claim 3
Dependent Claim
24 words
A COMPOSITION COMPRISING A HYDROCARBON OIL AND 0.1% TO 20%, BY WEIGHT OF SAID OIL. OF A SALT AS SET FORTH IN CLAIM 1.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-07 | 1957-12-07 | 1958-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-07 | 1961-12-07 | 1962-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-07 | 1965-12-07 | 1966-06-08 | $7700.00 | Window Closed / Lapsed |