US4024240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antibiotic A-32390 compositions
Assignee: BA BUSINESS CREDIT Inc
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Filing: 1975-07-18
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Granted: 1977-05-17
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Expires: 1995-07-18
Abstract
Abstract Novel A-32390:PVP compositions useful in the treatment of fungal infections.
Inventors
- 👤 Arvind L. Thakkar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:03
CPC Classifications
C; C07; C07C; C07C251/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
50 words
A solid antibiotic dispersion composition containing one part of an A-32390 compound of the formula ##STR3## wherein all R's are the same and are selected from the group consisting of hydrogen, acetyl, propionyl and butyryl; and from 1-15 parts of a polyvinylpyrrolidone having a molecular weight in the range 10,000-360,000.
Claim 2
Dependent Claim
50 words
A solid antibiotic dispersion composition containing one part of an A-32390 compound of the formula ##STR3## wherein all R's are the same and are selected from the group consisting of hydrogen, acetyl, propionyl and butyryl; and from 1-15 parts of a polyvinylpyrrolidone having a molecular weight in the range 10,000-360,000.
Claim 3
Dependent Claim
12 words
A dispersion according to claim 1 wherein the A-32390 compound is 1,6-di-O-(2-isocyano-3-methylcrotonyl)-D-mannitol.
Claim 4
Dependent Claim
51 words
A dispersion according to claim 1 containing one part of an A-32390 compound of the formula ##STR4## wherein all R's are the same and are selected from the group consisting of hydrogen, acetyl, propionyl and butyryl; and from 1-15 parts of a polyvinylpyrrolidone having a molecular weight in the range 10,000-60,000.
Claim 5
Dependent Claim
12 words
A dispersion according to claim 3 wherein the A-32390 compound is 1,6-di-O-(2-isocyano-3-methylcrotonyl)-D-mannitol.
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) | 1980-05-16 | 1980-11-15 | 1981-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-16 | 1984-11-15 | 1985-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-16 | 1988-11-15 | 1989-05-17 | $7700.00 | Window Closed / Lapsed |