US4534978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perfluorocycloamines
Assignee: Tanabe Pharma Corp
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Filing: 1984-07-24
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Granted: 1985-08-13
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Expires: 2004-07-24
Abstract
Abstract Perfluorocycloamines represented by the general formula: <IMAGE> wherein either or both of ring A and ring B may be substituted with lower perfluoroalkyl group(s), m and n are independently 4, 5, or 6 and Z is a perfluoroalkylene group or a mere bond.
Inventors
- 👤 Kazumasa Yokoyama
- 👤 Chikara Fukaya
- 👤 Yoshio Tsuda
- 👤 Taizo Ono
- 👤 Yoshio Arakawa
- 👤 Tadakazu Suyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:11
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/04; C07D207/10; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/38
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
109 words
An emulsion containing a perfluorocycloamine compound capable of carrying oxygen, said emulsion comprising: 5-50% (w/v) of a perfluorocycloamine compound of the formula: ##STR59## wherein either or both of ring A and ring B may be substituted with lower perfluoroalkyl groups, m and n are independently 4, 5 or 6, and Z is a perfluoroalkylene group or a chemical bond, with the proviso that n is 4 or 6 when n is 4 and Z is a chemical bond, as an oxygen carrying component; - 5% (w/v) of an emulsifying agent, and a physiologically acceptable aqueous solution as the balance, the emulsion having a particle diameter of 0.3μ or less.
Claim 2
Dependent Claim
109 words
An emulsion containing a perfluorocycloamine compound capable of carrying oxygen, said emulsion comprising: 5-50% (w/v) of a perfluorocycloamine compound of the formula: ##STR59## wherein either or both of ring A and ring B may be substituted with lower perfluoroalkyl groups, m and n are independently 4, 5 or 6, and Z is a perfluoroalkylene group or a chemical bond, with the proviso that n is 4 or 6 when n is 4 and Z is a chemical bond, as an oxygen carrying component; - 5% (w/v) of an emulsifying agent, and a physiologically acceptable aqueous solution as the balance, the emulsion having a particle diameter of 0.3μ or less.
Claim 3
Dependent Claim
21 words
An emulsion according to claim 1 in which the perfluorocycloamine compound is present in an amount of 10 to 40% (w/v).
Claim 4
Dependent Claim
20 words
An emulsion according to claim 1 in which the particles are in the range of 0.05 to 0.3μ in diameter.
References Cited (Backward Citations)
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Cited
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Cited
US3956293A
Cited
US3911138A
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-08-12 | 1989-02-11 | 1989-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-12 | 1993-02-11 | 1993-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-12 | 1997-02-11 | 1997-08-13 | $7700.00 | Window Closed / Lapsed |