US3639239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bis(triorganosilyl)phosphate compositions
Assignee: Dow Silicones Corp
•
Filing: 1969-09-17
•
Granted: 1972-02-01
•
Expires: 1989-09-17
Abstract
Abstract Disiloxy derivatives of fluoroalkyl acid phosphates of the general formula ARE DISCLOSED AS CORROSION INHIBITORS FOR FLUOROSILICONE LUBRICANTS.
Inventors
- 👤 Eugene D Groenhof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:40
CPC Classifications
C; C10; C10M; C10M3/00; C10M2229/00; C10M2229/04; C10M2229/041; C10M2229/043; C10M2229/044; C10M2229/05; C10M2229/051; C10M2229/054; C10N; C10N2020/00; C10N2020/01
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
10 words
The composition of claim 1 wherein the organopolysiloxane is 3,3,3-trifluoropropylmethylpolysiloxane.
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) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |