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:
Jan. 08, 2013
Filed:
Mar. 14, 2007
Kazuhiro Ishikawa, Wakayama, JP;
Kazuo Kuwahara, Wakayama, JP;
Hiromi Nambu, Wakayama, JP;
Akito Itoi, Wakayama, JP;
Yukihiro Fukuyama, Wakayama, JP;
Yuki Wakabayashi, Wakayama, JP;
Kazuhiro Ishikawa, Wakayama, JP;
Kazuo Kuwahara, Wakayama, JP;
Hiromi Nambu, Wakayama, JP;
Akito Itoi, Wakayama, JP;
Yukihiro Fukuyama, Wakayama, JP;
Yuki Wakabayashi, Wakayama, JP;
Kao Corporation, Tokyo, JP;
Abstract
The present invention provides a nonaqueous pigment dispersant containing a copolymer having: (a) a constituent unit derived from a nitrogen atom-containing polymerizable macromonomer having an ethylenic unsaturated double bond at one terminal, and (b) a constituent unit derived from a monomer unit having an ethylenic unsaturated double bond, being copolymerizable with the nitrogen atom-containing polymerizable macromonomer of constituent (a), and a pigment dispersion composition containing the dispersant, a pigment and a nonaqueous solvent.