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:
Jun. 23, 2020
Filed:
Jul. 25, 2017
Cephalon, Inc., Frazer, PA (US);
Lu Wang, West Chester, PA (US);
Tianyi Zhou, West Chester, PA (US);
Zhaoqing Zhang, West Chester, PA (US);
Mi Jin, West Chester, PA (US);
Cehpalon, Inc., Frazer, PA (US);
Abstract
A wash buffer comprising greater than 0 mM and less than about 500 mM arginine, greater than 0 mM and less than about 250 mM guanidine, greater than 0 mM and less than about 250 mM sodium chloride, and greater than 0 mM and less than about 50 mM of an anionic surfactant, or greater than 0% and less than about 0.25% w/v of a non-ionic surfactant. When used during affinity chromatography purification of a protein of interest, such as an antibody, the wash buffer significantly reduces the level of host cell proteins from the preparation. Following affinity chromatography with the wash buffer, the protein of interest may be further purified using membrane chromatography.