Patent US2101896A successfully refreshed from Google Patents.
US4453028A
Expired / Lapsed
US
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Perfluorinated compounds with cyclohexyl groups
Assignee: The University of Texas System
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Filing: 1982-03-29
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Granted: 1984-06-05
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Expires: 2002-03-29
Abstract
Abstract This invention relates to perfluorinated compounds with cyclohexyl groups. Such compounds are useful as synthetic blood substitutes and perfusion media, and for other purposes, and in emulsions which contain such compounds. A method is disclosed for direct fluorination without creating excessive unwanted byproducts. Hydrocarbon starting compounds used in this invention may be purchased or synthesized. The compounds created by the methods of this invention include perfluorinated tetraphenylmethane, perfluorinated diphenylmethane, and perfluorinated t-butylcyclohexane.
Inventors
- 👤 Richard J. Lagow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:22
CPC Classifications
C; C07; C07C; C07C23/00; C07C23/18; C07C17/00; Y; Y10; Y10S; Y10S516/00; Y10S516/905
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
2 words
Perfluorinated tetracyclohexylmethane.
Claim 2
Dependent Claim
2 words
Perfluorinated tetracyclohexylmethane.
Claim 3
Dependent Claim
2 words
Perfluorinated dicyclohexylmethane.
Claim 4
Dependent Claim
2 words
Perfluorinated dicyclohexylmethane.
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) | 1987-06-05 | 1987-12-05 | 1988-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-05 | 1991-12-05 | 1992-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-05 | 1995-12-05 | 1996-06-05 | $7700.00 | Window Closed / Lapsed |