Patent US3907643A successfully refreshed from Google Patents.
US3907643A
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Process for producing the antibiotic U-44,590
Assignee: Pharmacia and Upjohn Co
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Filing: 1975-01-15
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Granted: 1975-09-23
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Expires: 1995-01-15
Abstract
Abstract New antibiotic U-44,590 and derivatives thereof, produced by the controlled fermentation of the new microorganism Streptomyces platensis var. clarensis var nova, NRRL 8035. This antibiotic and its derivatives are active against Gram-negative bacteria. Accordingly, they can be used in various environments to eradicate or control such bacteria.
Inventors
- 👤 Clarence Deboer
- 👤 Brian Bannister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:03
CPC Classifications
C; C07; C07H; C07H19/00; C07H19/02; C07H19/04; C07H19/12; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/852; Y10S435/886; Y10S435/903
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
9 words
A PROCESS FOR PREPARING ANTIBIOTIC U-44,590 HAVING THE STRUCTURE
Claim 2
Dependent Claim
9 words
A PROCESS FOR PREPARING ANTIBIOTIC U-44,590 HAVING THE STRUCTURE
Claim 3
Dependent Claim
20 words
A process, according to claim 1, wherein said aqueous nutrient medium contains a source of assimilable carbohydrate and assimilable nitrogen.
Claim 4
Dependent Claim
16 words
A process, according to claim 1, wherein said antibiotic U-44,590 is isolated from the fermentation broth.
References Cited (Backward Citations)
US3462414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |