US2516682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing streptomycin
Assignee: ER Squibb and Sons LLC
•
Filing: 1946-03-23
•
Granted: 1950-07-25
•
Expires: 1966-03-23
Abstract
No abstract record available.
Inventors
- 👤 Donovick Richard
- 👤 Walter L Koerber
- 👤 Geoffrey W Rake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:46
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/44; C12P19/46; C12P19/54; C12N; C12N1/00; C12N1/14; C12N1/145; C12P13/00; C12P13/02; C12R; C12R2001/00; C12R2001/645; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/886; Y10S435/897
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
THE METHOD OF PRODUCING STREPTOMYCIN WHICH COMPRISES GROWING THE ORGANISM ACTINOMYCES GRISEUS IN CONTACT WITH A LIQUID NUTRIENT MEDIUM WHOSE SUBSTANTIALLY SOLE SOURCE OF NITROGENOUS AND GROWTH-PROMOTING SUBSTANCES IS A MEMBER OF THE GROUP CONSISTING OF THE MEALS, FLOURS, MEALINFUSIONS AND FLOUR-INFUSIONS OF BEANS, PEANUTS COTTONSEED, AND LINSEED.
Claim 2
Independent Claim
48 words
THE METHOD OF PRODUCING STREPTOMYCIN WHICH COMPRISES GROWING THE ORGANISM ACTINOMYCES GRISEUS IN CONTACT WITH A LIQUID NUTRIENT MEDIUM WHOSE SUBSTANTIALLY SOLE SOURCE OF NITROGENOUS AND GROWTH-PROMOTING SUBSTANCES IS A MEMBER OF THE GROUP CONSISTING OF THE MEALS, FLOURS, MEALINFUSIONS AND FLOUR-INFUSIONS OF BEANS, PEANUTS COTTONSEED, AND LINSEED.
References Cited (Backward Citations)
US2051017A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-24 | 1954-01-23 | 1954-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-24 | 1958-01-23 | 1958-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-24 | 1962-01-23 | 1962-07-25 | $7700.00 | Window Closed / Lapsed |