US3992264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antibiotic 1745A/X and methods for the production thereof
Assignee: Hoffmann La Roche Inc
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Filing: 1975-07-23
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Granted: 1976-11-16
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Expires: 1995-07-23
Abstract
Abstract A new antibiotic, designated as antibiotic 1745A/X, is produced by the fermentation of the known microorganism Streptomyces antibioticus, ATCC 11891, using the novel compound erythronolide A oxime as the substrate. This new antibiotic is useful as an antibacterial agent.
Inventors
- 👤 Richard Wightman Kierstead
- 👤 Ronald Andrew Le Mahieu
- 👤 David Pruess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:54
CPC Classifications
C; C07; C07D; C07D313/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/886; Y10S435/888
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A process for the preparation of antibiotic 1745A/X which comprises cultivating Streptomyces antibiotics ATCC 11891, under submerged aerobic conditions, in an aqueous nutrient medium containing assimilable sources of carbohydrates, nitrogen and inorganic salts, to which has been added erythronolide A oxime as the substrate, until substantial antibiotic activity is imparted to said medium by the production of antibiotic 1745A/X and the recovering the antibiotic 1745A/X so produced from said aqueous medium.
Claim 2
Dependent Claim
71 words
A process for the preparation of antibiotic 1745A/X which comprises cultivating Streptomyces antibiotics ATCC 11891, under submerged aerobic conditions, in an aqueous nutrient medium containing assimilable sources of carbohydrates, nitrogen and inorganic salts, to which has been added erythronolide A oxime as the substrate, until substantial antibiotic activity is imparted to said medium by the production of antibiotic 1745A/X and the recovering the antibiotic 1745A/X so produced from said aqueous medium.
References Cited (Backward Citations)
US2757123A
Cited
US3928387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-16 | 1980-05-17 | 1980-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-16 | 1984-05-17 | 1984-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-16 | 1988-05-17 | 1988-11-16 | $7700.00 | Window Closed / Lapsed |