The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 03, 1976
Filed:
Dec. 19, 1974
Applicant:
Inventors:
Joseph Stark, Marburg an der Lahn, DT;
Oswald Zwisler, Marbach near Marburg an der Lahn, DT;
Assignee:
Behringwerke Aktiengesellschaft, Marburg an der Lahn, US;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; C07G / ;
U.S. Cl.
CPC ...
2601 / ; 424 92 ;
Abstract
The invention relates to a process for preparing choleragen, which comprises adding silicic acid to a solution containing choleragen, stirring the suspension, separating the silicic acid, treating for elution with an aqueous salt or buffer solution, and separating the choleragen-containing eluate from the silicic acid.