US3882182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tertiary perfluoro-amino ethers
Assignee: Hoechst AG
•
Filing: 1973-08-09
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Granted: 1975-05-06
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Expires: 1993-08-09
Abstract
Abstract Perfluorinated hydrogen-free amines having side chains which contain ether bonds are formed by the electrolysis, carried out in anhydrous hydrofluoric acid, of the products of addition of hexafluoropropene to amino alcohols.
Inventors
- 👤 Siegfried Benninger
- 👤 Thomas Martini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:47
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/08; A; A61; A61P; A61P7/00; A61P7/08; C25; C25B; C25B3/00; C25B3/01; C25B3/07; C25B3/09; C25B3/11; C25B3/20; C25B3/27; C25B3/28
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
5 words
A COPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COPOUND OF THE FORMULA
Claim 3
Dependent Claim
10 words
A compound as claimed in claim 1 having the formula
Claim 4
Dependent Claim
10 words
A compound as claimed in claim 1 having the formula
Claim 5
Dependent Claim
27 words
A compound as claimed in claim 1, having the formula RF1 N(C2F4 O C3F7)2 where RF1 is a perfluoro-alkyl radical having from 6 to 10 carbon atoms.
Claim 6
Dependent Claim
10 words
A compound as cLaimed in claim 1, having the formula
Claim 7
Dependent Claim
10 words
A compound as claimed in Claim 1, having the formula
Claim 8
Dependent Claim
10 words
A compound as claimed in Claim 1, having the formula
Claim 9
Dependent Claim
10 words
A compound as claimed in claim 1, having a formula
References Cited (Backward Citations)
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Cited
US2519983A
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US2616927A
Cited
US2631151A
Cited
US2713593A
Cited
US3641167A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |