US3632477A
Expired / Lapsed
US
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Antibiotic production using a strain of aspergillus candidus
Assignee: Beecham Group PLC
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Filing: 1969-09-24
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Granted: 1972-01-04
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Expires: 1989-09-24
Abstract
Abstract The antibiotic 3''-chloro 5:2'' dihydroxy 3:7:8-trimethoxy flavone is produced by growing a strain of Aspergillus candidus ATCC 20022 or ATCC 20023 or a mutant thereof under aerobic conditions in an aqueous nutrient until the nutrient solution exhibits substantial antibiotic activity and thereafter isolating the antibiotic with a hydrocarbon solvent. The antibiotic has bactericidal and fungicidal properties.
Inventors
- 👤 Merfyn Richards
- 👤 Jeffery Edward Munden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:45
CPC Classifications
C; C07; C07D; C07D311/00; C07D311/02; C07D311/04; C07D311/22; C07D311/26; C07D311/28; C07D311/30; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911; Y10S435/913
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
17 words
The process of claim 1 in which the antibiotic is isolated by extraction with a hydrocarbon solvent.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |