US2582921A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of bacitracin by adsorption
Assignee: Sharp and Dohme Inc
•
Filing: 1949-02-03
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Granted: 1952-01-15
•
Expires: 1969-02-03
Abstract
No abstract record available.
Inventors
- 👤 Charney Jesse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:39
CPC Classifications
C; C07; C07K; C07K7/00; C07K7/50; C07K7/54; C07K7/56; C07K7/58; Y; Y10; Y10S; Y10S435/00; Y10S435/803
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
THE METHOD OF PURIFYING BACITRACIN CONSISTING IN ADMIXING A CLARIDIED FERMENTATION BROTH CONTAINING BACITRACIN WITH A ZEOLITIC MATERIAL CHOSEN FROM THE GROUP CONSISTING OF UNREFINED DIATOMACEOUS EARTH, BENTONITE, KAOLINE, FULLER''S EARTH, AND MAGNESIUM TRISILICATE, SEPARATING THE ZEOLITIC MATERIAL AND ADMIXING IT WITH A DILUTE HYDROXIDE SOLUTION CHOSEN FROM THE CLASS CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS, SEPARATING THE SOLUTION FROM THE ZEOLITIC MATERIAL, AND SEPARATING THE BACITRACIN FROM THE SOLUTION.
Claim 2
Independent Claim
72 words
THE METHOD OF PURIFYING BACITRACIN CONSISTING IN ADMIXING A CLARIDIED FERMENTATION BROTH CONTAINING BACITRACIN WITH A ZEOLITIC MATERIAL CHOSEN FROM THE GROUP CONSISTING OF UNREFINED DIATOMACEOUS EARTH, BENTONITE, KAOLINE, FULLER''S EARTH, AND MAGNESIUM TRISILICATE, SEPARATING THE ZEOLITIC MATERIAL AND ADMIXING IT WITH A DILUTE HYDROXIDE SOLUTION CHOSEN FROM THE CLASS CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS, SEPARATING THE SOLUTION FROM THE ZEOLITIC MATERIAL, AND SEPARATING THE BACITRACIN FROM THE SOLUTION.
References Cited (Backward Citations)
US2457887A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |