US2596969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fermentation process for producing grisein
Assignee: Merck and Co Inc
•
Filing: 1948-11-30
•
Granted: 1952-05-20
•
Expires: 1968-11-30
Abstract
No abstract record available.
Inventors
- 👤 Hendlin David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:49
CPC Classifications
C; C12; C12P; C12P13/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/886; Y10S435/897
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
THE PROCESS FOR PRODUCING FERMENTATION BROTHS CONTAINING GRISEIN IN ENHANCED CONCENTRATIONS WHICH COMPRISES FERMENTIN G A GRISEIN PRODUCING STRAIN OF STREPTOMYCES GRISEUS UNDER AEROBIC SUBMERGED CONDITIONS IN AN AQUEOUS MEDIUM CONTAINING BREWER''S YEAST AS THE SOLE ORGANIC NUTRIENT.
Claim 2
Dependent Claim
38 words
THE PROCESS FOR PRODUCING FERMENTATION BROTHS CONTAINING GRISEIN IN ENHANCED CONCENTRATIONS WHICH COMPRISES FERMENTIN G A GRISEIN PRODUCING STRAIN OF STREPTOMYCES GRISEUS UNDER AEROBIC SUBMERGED CONDITIONS IN AN AQUEOUS MEDIUM CONTAINING BREWER''S YEAST AS THE SOLE ORGANIC NUTRIENT.
References Cited (Backward Citations)
US2505053A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-20 | 1955-11-19 | 1956-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-20 | 1959-11-19 | 1960-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-20 | 1963-11-19 | 1964-05-20 | $7700.00 | Window Closed / Lapsed |