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:
Dec. 13, 2016
Filed:
Jun. 26, 2014
Applicant:
Immunogen, Inc., Waltham, MA (US);
Inventor:
Wayne C. Widdison, Belmont, MA (US);
Assignee:
ImmunoGen, Inc., Waltham, MA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D 213/71 (2006.01);
U.S. Cl.
CPC ...
C07D 213/71 (2013.01);
Abstract
The present invention is directed to a method of separating a monocarboxylic represented by the following structural formula: (I) from a dicarboxylic acid represented by the following structural formula: (II) using silica chromatography.