Patent US2776240A successfully refreshed from Google Patents.
US2776240A
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Recovery and purification of bacitracin
Assignee: Commercial Solvents Corp
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Filing: 1954-09-10
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Granted: 1957-01-01
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Expires: 1974-09-10
Abstract
No abstract record available.
Inventors
- 👤 Robert W Shortridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:46
CPC Classifications
C; C07; C07K; C07K7/00; C07K7/50; C07K7/54; C07K7/56; C07K7/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A PROCESS FOR RECOVERING BACITRACIN FROM FERMENTATION LIQUORS IN WHICH IT HAS BEEN PRODUCED, WHICH COMPRISES ADJUSTING THE PH OF SUCH A FERMENTATION LIQUOR TO A VALUE OF FROM ABOUT 4 TO 5.7, PASSING IN IT CONTACT WITH A BED OF CARBOXYLIC ACID TYPE EXCHANGE RESIN, TO CAUSE SORPTION OF THE BACITRACIN ON THE RESIN, THEN PASSING A DILUTE AQUEOUS SOLUTION OF A WEAK BASE IN CONTACT WITH THE BED OF EXCHANGE RESIN IN AMOUNT SUFFICIENT TO ELUTE FROM THE BED SUBSTANTIALLY IS ENTIRE CONTENT OF SORBED BACITRACIN, AND RECOVERING THE BACITRACIN FROM THE ELUATE.
Claim 2
Dependent Claim
95 words
A PROCESS FOR RECOVERING BACITRACIN FROM FERMENTATION LIQUORS IN WHICH IT HAS BEEN PRODUCED, WHICH COMPRISES ADJUSTING THE PH OF SUCH A FERMENTATION LIQUOR TO A VALUE OF FROM ABOUT 4 TO 5.7, PASSING IN IT CONTACT WITH A BED OF CARBOXYLIC ACID TYPE EXCHANGE RESIN, TO CAUSE SORPTION OF THE BACITRACIN ON THE RESIN, THEN PASSING A DILUTE AQUEOUS SOLUTION OF A WEAK BASE IN CONTACT WITH THE BED OF EXCHANGE RESIN IN AMOUNT SUFFICIENT TO ELUTE FROM THE BED SUBSTANTIALLY IS ENTIRE CONTENT OF SORBED BACITRACIN, AND RECOVERING THE BACITRACIN FROM THE ELUATE.
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) | 1960-01-01 | 1960-07-02 | 1961-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-01 | 1964-07-02 | 1965-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-01 | 1968-07-02 | 1969-01-01 | $7700.00 | Window Closed / Lapsed |