US3597457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluoroalkylamidoalkylene-siloxanes
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1968-03-11
•
Granted: 1971-08-03
•
Expires: 1988-03-11
Abstract
Abstract WHERE Y IS HYDROGEN, CHLORINE AND FLUORINE, ATTACHED TO THE PERFLUORO-ALKYLENE GROUP R1 R IS HYDROGEN OR ALKYL, R'' IS A DIVALENT HYDROCARBYL GROUP FREE FROM ALIPHATIC UNSATURATION, R" IS A HYDROLYZABLE GROUP R''" IS A HYDROCARBYL OR HYDROLYZABLE GROUP R''V IS HYDROCARBYL. SILOXANES USEFUL AS ANTI-FOAMING AGENTS AND FOR SURFACE TREATMENT OF GLASS, TEXTILE, ETC., ARE PROVIDED WHICH ARE THE HYDROLYSIS PRODUCTS OF SILANCE OF THE FORMULA Y-RF-CO-N(-R)-R''-SI(-R")(-R"'')-R''V
Inventors
- 👤 Thomas Alexander Robinson
- 👤 James Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:29
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/643; D06M15/657; B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404; B01D19/0409; C; C03; C03C; C03C17/00; C03C17/28; C03C17/30; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0838; C07F7/18; C07F7/1804; C08; C08G; C08G77/00; C08G77/04; C08G77/22; C08G77/26; C08G77/38; C08G77/382; C08G77/388; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07
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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |