US3647740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorocarbon silicone compositions
Assignee: Dow Silicones Corp
•
Filing: 1970-06-23
•
Granted: 1972-03-07
•
Expires: 1990-06-23
Abstract
Abstract ORGANOSILANCES AND SILANOLS OF THE FORMULA (X)(3-A)-SI-CH2-CH2-RF-CH2-CH2-SI(-R)A(-X)(3-A) AND SILOXANES OF THE FORMULA (O)((3-A-B)(1/2))-SI(-R)A-CH2-CH2-RF-CH2-CH2-SI(-R)A)- (O)((3-A-B)(1/2)) ARE DISCLOSED. EXAMPLES OF SUCH COMPOUNDS INCLUDE CL-SI(-CH3)2-CH2-CH2-(CF2)6-CH2-CH2-SI(-CH3)2-CL AND CF3-CH2-CH2-SI(-CH3)(-(O/2)-CH2-CH2-(CF2)6-CH2-CH2- SI(-CH3)(-(O/2)-CH2-CH2-CF3 CERTAIN POLYMERS ARE PARTICULARLY USEFUL FOR MAKING REVERSION RESISTANT SILOXANE RUBBERS AND RESINS.
Inventors
- 👤 Lorne A Loree
- 👤 Ogden R Pierce
- 👤 Yung Ki Kim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:34
CPC Classifications
C; C10; C10M; C10M3/00; C07; C07C; C07C323/00; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0836; C07F7/0838; C07F7/0896; C07F7/12; C07F7/21; C08; C08G; C08G77/00; C08G77/48; C08G77/50; C10M2229/00; C10M2229/04; C10M2229/05; C10M2229/051; C10M2229/053; Y; Y10; Y10S; Y10S525/00; Y10S525/925
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |