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:
Jul. 05, 1977
Filed:
Oct. 09, 1975
Torsten Bertil Helting, Marbach-Marburg an der Lahn, DT;
Behringwerke Aktiengesellschaft, Marburg an der Lahn, DT;
Abstract
Process for preparing a derivative of the fragment B of diphtheria toxin, which comprises treating an aqueous solution of the diphtheria toxin with an aliphatic mono- or di-aldehyde having a chain length of 1 to 6 carbon atoms at an aldehyde concentration of 0.0015 M to 0.035 M, at 1.degree. to 20.degree. C, for 5 minutes to 50 hours, reacting the toxin, before or after the treatment with aldehyde, in the presence of a compound splitting off di-sulfide bridges, with a proteolytic enzyme, recovering the derivative of fragment B from the solution obtained in the presence of a denaturing agent by protein-chemical isolation processes and separating it from the denaturing agent.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile