Patent US3694479A successfully refreshed from Google Patents.
US3694479A
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Bis (triorganosilyl) phosphate compositions
Assignee: Dow Silicones Corp
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Filing: 1971-03-29
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Granted: 1972-09-26
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Expires: 1991-03-29
Abstract
Abstract Disiloxy derivatives of fluoroalkyl acid phosphates of the general formula ARE DISCLOSED AS CORROSION INHIBITORS FOR FLUOROSILICONE LUBRICANTS.
Inventors
- 👤 E D Groenhof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:52
CPC Classifications
C; C10; C10M; C10M3/00; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/095; C10M2227/00; C10M2227/04; C10M2229/00; C10M2229/04; C10M2229/041; C10M2229/043; C10M2229/044; C10M2229/05; C10M2229/051
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
Compositions in accordance with claim 1 wherein Rf is a -CF3 radical.
Claim 2
Dependent Claim
17 words
Compositions in accordance with claim 2 of the formula H(CF2)mCH2OP(O)(OSi(CH3)CH2CH2CF3)2 in which m equals 4 or 6.
References Cited (Backward Citations)
US3418240A
Cited
US3441585A
Cited
US3385822A
Cited
US3441537A
Cited
US3639239A
Cited
US3631088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |