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. 16, 2016
Filed:
Nov. 05, 2014
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Tatsuki Fukui, Yokohama, JP;
Atsushi Takahashi, Kyoto, JP;
Daisuke Sasaguri, Yokohama, JP;
Fumiko Tomatsu, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09B 23/08 (2006.01);
U.S. Cl.
CPC ...
C09B 23/086 (2013.01);
Abstract
A method for producing a contrast agent includes the reaction step of allowing a cyanine dye containing a naphthyl group and a carboxyl or carboxylate group to react with a polyethylene glycol containing an amino group in an organic solvent to form a conjugate, and the purification step of purifying the conjugate using an organic solvent.