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:
Apr. 19, 2016
Filed:
Oct. 05, 2012
Colorant, microcapsule pigment prepared by using the same and ink composition for writing instrument
Applicant:
Mitsubishi Pencil Company, Limited, Shinagawa-ku, JP;
Inventor:
Shuji Ichikawa, Yokohama, JP;
Assignee:
MITSUBISHI PENCIL COMPANY, LIMITED, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D 11/17 (2014.01); C09B 11/24 (2006.01); C09B 67/02 (2006.01); C09K 9/02 (2006.01); C09B 67/08 (2006.01);
U.S. Cl.
CPC ...
C09B 11/24 (2013.01); C09B 67/0013 (2013.01); C09B 67/0097 (2013.01); C09D 11/17 (2013.01); C09K 9/02 (2013.01); C09K 2211/1088 (2013.01);
Abstract
Provided are a colorant represented by the following Formula (I) which is excellent in a color intensity and a lightfastness, a microcapsule pigment including the colorant, a developer and a chromic temperature controller and an ink composition for writing instruments including the microcapsule pigment: wherein X and Y represent a hydrogen atom, an alkyl group having 1 to 4 carbon atoms or a halogen atom; and X and Y may be identical or different from each other, provided that a case in which both of X and Y are a hydrogen atom is excluded.