US4510335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perfluorinated branched ether compounds
Assignee: The University of Texas System
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Filing: 1982-03-29
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Granted: 1985-04-09
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Expires: 2002-03-29
Abstract
Abstract This invention relates to perfluorinated branched ether compounds which are useful as synthetic blood substitutes and perfusion media, and for other purposes, and to emulsions which contain such compounds. A method is disclosed for direct fluorination without creating excessive unwanted byproducts. Hydrocarbon ether starting compounds used in this invention may be purchased or synthesized.
Inventors
- 👤 Richard J. Lagow
- 👤 Daniel F. Persico
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:59
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/04; C07C43/12; C07C43/123; A; A61; A61P; A61P7/00; A61P7/08; C07C41/00; C07C41/01; C07C41/18; C07C41/22; C07C41/34; C07C41/40; C07C41/42
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
3 words
Perfluorinated bis-neopentyl ether.
Claim 2
Dependent Claim
3 words
Perfluorinated bis-neopentyl ether.
Claim 3
Dependent Claim
3 words
Perfluorinated bis-isopropyl ether.
Claim 4
Dependent Claim
3 words
Perfluorinated bis-isopropyl ether.
Claim 5
Dependent Claim
3 words
Perfluorinated bis-isobutyl ether.
Claim 6
Dependent Claim
3 words
Perfluorinated bis-isobutyl ether.
Claim 7
Dependent Claim
3 words
Perfluorinated bis-isopentyl ether.
Claim 8
Dependent Claim
3 words
Perfluorinated bis-isopentyl ether.
Claim 9
Dependent Claim
3 words
Perfluorinated bis-tertiary-butyl ether.
Claim 10
Dependent Claim
3 words
Perfluorinated bis-tertiary-butyl ether.
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) | 1988-04-08 | 1988-10-08 | 1989-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-08 | 1992-10-08 | 1993-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-08 | 1996-10-08 | 1997-04-09 | $7700.00 | Window Closed / Lapsed |