Patent US3231604A successfully refreshed from Google Patents.
US3231604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyethylene oxide and polypropylene oxide perfluoroalkyl substituted oxyalkanoates
Assignee: EIDP Inc
•
Filing: 1962-01-23
•
Granted: 1966-01-25
•
Expires: 1982-01-23
Abstract
No abstract record available.
Inventors
- 👤 Neal O Brace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:08
CPC Classifications
C; C07; C07C; C07C59/00; C07C59/40; C07C59/58; C07C59/60; C07C59/125; C07C59/135; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
SURFACE ACTIVE, NONIONIC FLUORINE-CONTAINING COMPOUNDS OF THE STRUCTURE RFY WHEREIN RF IS A PERFLURORALKYL GROUP CONTAINING FROM THREE TO TWENTY CARBONS AND Y IS A POLYETHER-CONTAINING GROUP HAVING THE STRUCTURE SELECTED FROM THE GROUP CONSISTING OF (A) -CH=CH(CH2)NOCH2CH2CO2(CPH2PO)MH, AND (B) -(CH2)N+2OCH2CH2CO2(CPH2PO)MH, WHEREIN N IS FROM ONE TO EIGHTEEN, M IS FROM ONE TO TWENTY AND P IS AN INTEGER FROM 2 TO 3.
Claim 2
Dependent Claim
63 words
SURFACE ACTIVE, NONIONIC FLUORINE-CONTAINING COMPOUNDS OF THE STRUCTURE RFY WHEREIN RF IS A PERFLURORALKYL GROUP CONTAINING FROM THREE TO TWENTY CARBONS AND Y IS A POLYETHER-CONTAINING GROUP HAVING THE STRUCTURE SELECTED FROM THE GROUP CONSISTING OF (A) -CH=CH(CH2)NOCH2CH2CO2(CPH2PO)MH, AND (B) -(CH2)N+2OCH2CH2CO2(CPH2PO)MH, WHEREIN N IS FROM ONE TO EIGHTEEN, M IS FROM ONE TO TWENTY AND P IS AN INTEGER FROM 2 TO 3.
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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |