Patent US2734018A successfully refreshed from Google Patents.
US2734018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ircso
Assignee: —
•
Filing: —
•
Granted: 1956-02-07
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Expires: 1973-02-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:26
CPC Classifications
C; C12; C12N; C12N1/00; C12N1/20; C12N1/205; C12P; C12P29/00; C12R; C12R2001/00; C12R2001/01; C12R2001/465; C12R2001/485; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/886; Y10S435/889
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
THE PROCESS OF PRODUCING TETRACYCLINE WHICH COMPRISES CULTIVATING IN A FERMENTATION BROTH AN ORGANISM CHOSEN FROM THE GROUP CONSISTING OF ORGANISMS OF THE SPECIES STREPTOMYCES AUREOFACIENS TOGETHER WITH NATURAL AND ARTIFICIALLY INDUCED MUTANTS THEREOF, WHILE INHIBITING THE FORMATION OF CHLORTETRACYCLINE BY SELECTING NUTRIENT ELEMENTS MAKING UP THE FERMENTATION BROTH WHICH ARE SUBSTANTIALLY FREE OF SOLUBLE CHLORIDES, AND RECOVERING THEREFROM A PRODUCT CONTAINING TETRACYCLINE AS THE RECOVERING ANTIBIOTIE SUBSTANCE PRESENT IN THE PRODUCT.
Claim 2
Dependent Claim
72 words
THE PROCESS OF PRODUCING TETRACYCLINE WHICH COMPRISES CULTIVATING IN A FERMENTATION BROTH AN ORGANISM CHOSEN FROM THE GROUP CONSISTING OF ORGANISMS OF THE SPECIES STREPTOMYCES AUREOFACIENS TOGETHER WITH NATURAL AND ARTIFICIALLY INDUCED MUTANTS THEREOF, WHILE INHIBITING THE FORMATION OF CHLORTETRACYCLINE BY SELECTING NUTRIENT ELEMENTS MAKING UP THE FERMENTATION BROTH WHICH ARE SUBSTANTIALLY FREE OF SOLUBLE CHLORIDES, AND RECOVERING THEREFROM A PRODUCT CONTAINING TETRACYCLINE AS THE RECOVERING ANTIBIOTIE SUBSTANCE PRESENT IN THE PRODUCT.
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) | 1959-02-06 | 1959-08-08 | 1960-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-06 | 1963-08-08 | 1964-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-06 | 1967-08-08 | 1968-02-07 | $7700.00 | Window Closed / Lapsed |