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. 03, 2012
Filed:
Aug. 28, 2008
Applicants:
Tatsurou Yoshida, Tsukuba, JP;
Eri Yagi, Yokohama, JP;
Inventors:
Tatsurou Yoshida, Tsukuba, JP;
Eri Yagi, Yokohama, JP;
Assignee:
Canon Kasei Kabushiki Kaisha, Tsukuba-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 220/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A copolymer obtained by copolymerizing at least one monomer selected from specific acrylate or methacrylate monomers, at least one monomer selected from specific amino group-containing monomers and at least one monomer selected from specific polar group-containing monomers. A resin for electrophotographic functional component parts, which contains this copolymer, a developing roller in which a cover layer serving as a surface layer contains the copolymer as a positive charge control resin, and an electrophotographic apparatus that includes the developing roller.