US3981928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perfluorotertiaryalkyl ethers
Assignee: 3M Co
•
Filing: 1970-04-13
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Granted: 1976-09-21
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Expires: 1990-04-13
Abstract
Abstract A monohydroxyalkyl, perfluorotertiaryalkyl ether, said monohydroxylalkyl group having no more than 16 carbon atoms and said perfluorotertiary alkyl group having the structure ##EQU1## where R f is a perfluoroalkyl group of less than 10 carbon atoms.
Inventors
- 👤 Frank J. Pavlik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:05
CPC Classifications
C; C07; C07C; C07C31/00; C07C31/34; C07C31/40; C07C29/00; C07C29/68; C07C29/70; C07C43/00; C07C43/02; C07C43/03; C07C43/04; C07C43/13; C07C43/137; C07C59/00; C07C59/235; C07C59/305; C07C59/315; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; D; D06; D06M; D06M13/00; D06M13/10; D06M13/224; D06M13/236; Y; Y10; Y10S; Y10S516/00; Y10S516/01
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
35 words
A monohydroxyalkyl, perfluorotertiaryalkyl ether, said monohydroxyalkyl group having no more than 16 carbon atoms and said perfluorotertiaryalkyl group having the structure ##EQU2## where R f is a perfluoroalkyl radical of less than 10 carbon atoms.
Claim 2
Dependent Claim
35 words
A monohydroxyalkyl, perfluorotertiaryalkyl ether, said monohydroxyalkyl group having no more than 16 carbon atoms and said perfluorotertiaryalkyl group having the structure ##EQU2## where R f is a perfluoroalkyl radical of less than 10 carbon atoms.
Claim 3
Dependent Claim
1 words
2-(perfluoro-tertiary-butoxy)ethanol.
Claim 4
Dependent Claim
1 words
2-(perfluoro-tertiary-butoxy)ethanol.
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) | 1979-09-21 | 1980-03-22 | 1980-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-21 | 1984-03-22 | 1984-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-21 | 1988-03-22 | 1988-09-21 | $7700.00 | Window Closed / Lapsed |