US2641567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing penicillins
Assignee: Mathieson Chemical Corp
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Filing: 1950-02-25
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Granted: 1953-06-09
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Expires: 1970-02-25
Abstract
No abstract record available.
Inventors
- 👤 Perlman David
- 👤 Asger F Langlykke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:17
CPC Classifications
C; C12; C12P; C12P37/00; C12N; C12N1/00; C12N1/14; C12N1/145; C12R; C12R2001/00; C12R2001/645; C12R2001/80; Y; Y10; Y10S; Y10S423/00; Y10S423/09; Y10S423/17; Y10S435/00; Y10S435/8215; Y10S435/911; Y10S435/933; Y10S435/935
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
52 words
THE METHOD WHICH COMPRISES CULTURING A PENICILLIN-PRODUCING PENICILLIUM IN CONTACT WITH A LIQUID NUTRIENT MEDIUM CONTAINING NOT MORE THAN ABOUT 1.25% OF A CARBOHYDRATE SOURCE OF CARBON AND ENERGY, THE REMAINING CALORIC REQUIREMENT OF THE CULTURE BEING PROVIDED BY A FATTY OIL, THE QUANTITY OF FATTY OIL BEING AT LEAST ABOUT 0.75%.
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) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |