US2621146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of streptomycin on synthetic medium
Assignee: University of Illinois at Urbana-Champaign
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Filing: 1946-11-25
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Granted: 1952-12-09
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Expires: 1966-11-25
Abstract
No abstract record available.
Inventors
- 👤 Halbert H Thornberry
- 👤 Harry W Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:38
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/44; C12P19/46; C12P19/54; C12N; C12N1/00; C12N1/20; C12N1/205; C12P19/26; C12P19/28; C12R; C12R2001/00; C12R2001/01; C12R2001/465; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/886; Y10S435/897
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
95 words
A PROCESS FOR THE PRODUCTION OF STREPTOMYCIN WHICH COMPRISES THE CULTIVATION OF A SUBSTANTIALLY PURE CULTURE OF A VIABLE STRAIN OF THE ORGANISM STREPTOMYCES GRISEUS AT A TEMPERATURE BETWEEN APPROXIMATELY 22 AND APPROXIMATELY 32 DEGREES CENTIGRADE UPON A MEDIUM CONSISTING ESSENTIALLY OF AN AQUEOUS SOLUTION OF A FERMENTABLE CARBOHYDRATE AND A MIXTURE OF NONTOXIC COMPOUNDS WHICH YIELD LACTATE, PHOSPHATE, AMMONIUM, MAGNESIUM, POTASSIUM AND ZINC IONS AND IS SUBSTANTIALLY FREE FROM PROTEINS AND HYDROLYTIC PRODUCTS OF PROTEINS AND IS BUFFERED TO A PH BETWEEN APPROXIMATELY 6.5 AND APPROXIMATELY 7,5, AND SUBSEQUENTLY RECOVERING THE STREPTOMYCIN PRODUCED THEREIN.
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) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |