Patent US4534978A successfully refreshed from Google Patents.
US4534978A
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US
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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 23:39
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)
US3235561A
Cited
DE1668794A1
Cited
US3956293A
Cited
US3911138A
Cited
US3911138B1
Cited
US3962439A
Cited
US3933831A
Cited
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 |