Patent US1919916A successfully refreshed from Google Patents.
Patent US4267274A successfully refreshed from Google Patents.
US4267274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Streptomyces mediterranei mutant capable of production of rifamycin B
Assignee: Gruppo Lepetit SpA
•
Filing: 1974-06-13
•
Granted: 1981-05-12
•
Expires: 1994-06-13
Abstract
Abstract A biologically pure culture of Streptomyces mediterranei mutant strain 18, ATCC.
Inventors
- 👤 Richard J. White
- 👤 Giancarlo Lancini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:07
CPC Classifications
C; C12; C12N; C12N1/00; C12N1/20; C12N1/205; C12P; C12P17/00; C12P17/18; C12P17/188; C12P17/189; C12R; C12R2001/00; C12R2001/01; C12R2001/465; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/886
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
50 words
A biologically pure culture comprising a new microorganism mutant identified as Streptomyces mediterranei M 18, ATCC 21789, and a nutrient medium consisting essentially of an assimilable carbon source, an assimilable nitrogen source and essential mineral salts, said culture being capable of producing rifamycin B in a recoverable quantity upon fermentation.
Claim 2
Dependent Claim
50 words
A biologically pure culture comprising a new microorganism mutant identified as Streptomyces mediterranei M 18, ATCC 21789, and a nutrient medium consisting essentially of an assimilable carbon source, an assimilable nitrogen source and essential mineral salts, said culture being capable of producing rifamycin B in a recoverable quantity upon fermentation.
Claim 3
Dependent Claim
23 words
A biologically pure culture of Streptomyces mediterranei, mutant strain 18, (ATCC 21789) capable of producing rifamycin B in a recoverable quantity upon fermentation.
Claim 4
Dependent Claim
23 words
A biologically pure culture of Streptomyces mediterranei, mutant strain 18, (ATCC 21789) capable of producing rifamycin B in a recoverable quantity upon fermentation.
References Cited (Backward Citations)
US3150046A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-05-11 | 1984-11-10 | 1985-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-11 | 1988-11-10 | 1989-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-11 | 1992-11-10 | 1993-05-12 | $7700.00 | Window Closed / Lapsed |