Patent US3911056A successfully refreshed from Google Patents.
US3911056A
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Fluorocarbon amino phosphates
Assignee: Imperial Chemical Industries Ltd
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Filing: 1973-04-20
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Granted: 1975-10-07
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Expires: 1993-04-20
Abstract
Abstract wherein N IS 4, 5 OR 6 R C1-C5 alkyl (preferably C1-C3) or hydrogen M 1 TO 6, PREFERABLY 1 TO 3 X SO3M, COOM, OPO3M2 and M is hydrogen, alkali metal, ammonium or alkyl ammonium. Uses include mould release agents, paper and metal treatments. New surface active derivatives of the TFE oligomer oxybenzene sulphonamide structure having the formula
Inventors
- 👤 Leonard Eric Houghton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:02
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/205; C08J3/21; B; B29; B29C; B29C33/00; B29C33/56; B29C33/60; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/091; C07F9/14; C08K; C08K9/00; C08K9/04; C11; C11D; C11D1/00; C11D1/004; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/16; C23F11/164; D; D06; D06L; D06L4/00; D06L4/20; D06L4/22; D06L4/23; C08J2327/00; C08J2327/02; C08J2327/12; C08J2327/18; C10; C10M; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; C10M2219/00; C10M2219/04; C10M2219/044; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/043
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
3 words
A COMPOUND FORMULA
Claim 2
Dependent Claim
3 words
A COMPOUND FORMULA
Claim 3
Dependent Claim
26 words
A compound of formula C10F19O C6H4SO2N(R)CH2CH2O P(O)(OH)2 wherein R is CH3, C2H5 or C3H7 and the substituents on the C6H4 group are in the para positions.
Claim 4
Dependent Claim
26 words
A compound of formula C10F19O C6H4SO2N(R)CH2CH2O P(O)(OH)2 wherein R is CH3, C2H5 or C3H7 and the substituents on the C6H4 group are in the para positions.
References Cited (Backward Citations)
US3094547A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |