US4073879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brominated perfluorocarbon radiopaque agents
Assignee: University of Illinois System
•
Filing: 1976-08-16
•
Granted: 1978-02-14
•
Expires: 1996-08-16
Abstract
Abstract Brominated cyclic and dibrominated aliphatic perfluorocarbons are useful as radiopaque agents for examination of the body of an animal.
Inventors
- 👤 David M. Long, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:33
CPC Classifications
A; A61; A61K; A61K49/00; A61K49/04; A61K49/0433; A61K49/0447; A61K49/0461
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
39 words
In a process for radiologically examining a part of the body of an animal, the improvement comprising contacting said body part with an effective amount of a radiopaque agent comprising a dibrominated aliphatic perfluorocarbon or a brominated cyclic perfluorocarbon.
Claim 2
Dependent Claim
39 words
In a process for radiologically examining a part of the body of an animal, the improvement comprising contacting said body part with an effective amount of a radiopaque agent comprising a dibrominated aliphatic perfluorocarbon or a brominated cyclic perfluorocarbon.
Claim 3
Dependent Claim
25 words
The process of claim 1 wherein said perfluorocarbon is selected from the class consisting of dibrominated acyclic perfluorocarbons, monobrominated cyclic perfluorocarbons, and dibrominated cyclic perfluorocarbons.
Claim 4
Dependent Claim
17 words
The process of claim 2 wherein said perfluorocarbon has 2 to 12 carbon atoms in its molecule.
Claim 5
Dependent Claim
17 words
The process of claim 3 wherein said perfluorocarbon has 6 to 8 carbon atoms in its molecule.
Claim 6
Dependent Claim
16 words
The process of claim 3 wherein said perfluorocarbon has the formula BrCF 2 -CF 2 Br.
Claim 7
Dependent Claim
16 words
The process of claim 3 wherein said perfluorocarbon has the formula Br-(CF 2 ) 4 -Br.
Claim 8
Dependent Claim
12 words
The process of claim 3 wherein said perfluorocarbon has the formula ##STR3##
Claim 9
Dependent Claim
12 words
The process of claim 3 wherein said perfluorocarbon has the formula ##STR4##
Claim 10
Dependent Claim
12 words
The process of claim 3 wherein said perfluorocarbon has the formula ##STR5##
Claim 11
Dependent Claim
17 words
The process of claim 1 wherein said perfluorocarbon is administered in the form of an aqueous emulsion.
Claim 12
Dependent Claim
16 words
The process of claim 1 wherein said perfluorocarbon is administered in the form of an aerosol.
Claim 13
Dependent Claim
35 words
A non-toxic radiopaque emulsion consisting essentially of an aqueous phase, an effective amount of a dibrominated acyclic perfluorocarbon, a monobrominated cyclic perfluorocarbon, or a dibrominated cyclic perfluorocarbon, and a minor amount of an emulsifying agent.
Claim 14
Dependent Claim
35 words
A non-toxic radiopaque emulsion consisting essentially of an aqueous phase, an effective amount of a dibrominated acyclic perfluorocarbon, a monobrominated cyclic perfluorocarbon, or a dibrominated cyclic perfluorocarbon, and a minor amount of an emulsifying agent.
Claim 15
Dependent Claim
27 words
An emulsion in accordance with claim 12 which contains about 1 to 12 parts by volume of said perfluorocarbon for each part by volume of aqueous phase.
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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) | 1981-02-13 | 1981-08-15 | 1982-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-13 | 1985-08-15 | 1986-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-13 | 1989-08-15 | 1990-02-14 | $7700.00 | Window Closed / Lapsed |