US2516080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Terramycin and its production
Assignee: Pfizer Inc
•
Filing: 1949-11-28
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Granted: 1950-07-18
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Expires: 1969-11-28
Abstract
No abstract record available.
Inventors
- 👤 Ben A Sobin
- 👤 Alexander C Finlay
- 👤 Jasper H Kane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:26
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/07; D06M11/11; D06M11/155; C; C12; C12P; C12P29/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/886; Y10S435/904
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
43 words
A PROCESS FOR PRODUCING TERRAMYCIN, WHICH COMPRISES CULTIVATING A STRAIN OF STREPTOMYCES RIMOSUS IN AN AQUEOUS, NUTRIENT-CONTAINING, CARBOHYDRATE SOLUTION UNDER SUBMERGED AEROBIC CONDITIONS UNTIL SUBSTANTIAL ANTIBACTERIAL ACTIVITY IS IMPARTED TO SAID SOLUTION, AND THEN RECOVERING THE SO PRODUCED TERRMYCIN FROM THE FERMENTATION BROTH.
Claim 2
Dependent Claim
43 words
A PROCESS FOR PRODUCING TERRAMYCIN, WHICH COMPRISES CULTIVATING A STRAIN OF STREPTOMYCES RIMOSUS IN AN AQUEOUS, NUTRIENT-CONTAINING, CARBOHYDRATE SOLUTION UNDER SUBMERGED AEROBIC CONDITIONS UNTIL SUBSTANTIAL ANTIBACTERIAL ACTIVITY IS IMPARTED TO SAID SOLUTION, AND THEN RECOVERING THE SO PRODUCED TERRMYCIN FROM THE FERMENTATION BROTH.
Claim 3
Dependent Claim
52 words
AN AMPHOTERIC SUBSTANCE EFFECTIVE IN INHIBITING THE GROWTH OF GRAM POSITIVE AND GRAM NEGATIVE BACTERIA AND CAPABLE OF FORMING SALTS WITH ACIDS AND METALS, THAT IS SPARINGLY SOLUBLE IN METHANOL AND SUBSTANTIALLY INSOLUBLE IN WATER AND IN ETHER, WHOSE DIHYDRAGE CONTAINS THE ELEMENTS CARBON, HYDROGEN, NITROGEN, AND OXYGEN IN THE FOLLOWING PROPORTIONS:
Claim 4
Dependent Claim
52 words
AN AMPHOTERIC SUBSTANCE EFFECTIVE IN INHIBITING THE GROWTH OF GRAM POSITIVE AND GRAM NEGATIVE BACTERIA AND CAPABLE OF FORMING SALTS WITH ACIDS AND METALS, THAT IS SPARINGLY SOLUBLE IN METHANOL AND SUBSTANTIALLY INSOLUBLE IN WATER AND IN ETHER, WHOSE DIHYDRAGE CONTAINS THE ELEMENTS CARBON, HYDROGEN, NITROGEN, AND OXYGEN IN THE FOLLOWING PROPORTIONS:
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) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |