US2953495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anticancer antibiotic actinomycin c and its preparation
Assignee: Schenley Industries Inc
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Filing: 1954-07-22
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Granted: 1960-09-20
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Expires: 1974-07-22
Abstract
No abstract record available.
Inventors
- 👤 Brockmann Hans
- 👤 Bohne Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:44
CPC Classifications
C; C07; C07K; C07K7/00; C07K7/04; C07K7/06; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/886
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
102 words
THE ANTIBIOTIC SUBSTANCE ACTINOMYCIN C WHICH IS PRODUCED BY CULTIVATING A STRAIN OF STREPTOMYCES CHRYSOMALLYS IN AN EQUEOUS, NUTRIENT-CONTAINING, CARBOHYDRATE MEDIUM UNDER SUBMERGED AEROBIC GROWTH CONDITIONS AT A TEMPERATURE OF 29-30*C. FOR A PERIOD OF 4-6 DAYS TO IMPART SUBSTANTIAL ANTIBACTERIAL ACTIVITY TO SAID MEDIUM, SAID ANTIBIOTIC SUBSTANCE AS RECOVERED FROM THE RESULTANT FERMENTATION BROTH BEING SPARINGLY SOLUBLE IN WATER, VERY READILY SOLUBLE IN ACETONE, CHLOROFORM, ETHYL ACETATE, AND BENZENE, AND MODERATELY SOLUBLE IN ETHANOL, HAVING A MELTING POINT WITH DECOMPOSITION OFF 252*C., AN EQUIVALENT WEIGHT UPON TITRATION WITH PERCHLORIC ACID IN GLACIAL ACETIC ACID OF 1200$50, AND THE APPROXIMATE ANALYTICAL COMPOSITION:
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) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |