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:
Oct. 08, 2024
Filed:
Jan. 21, 2019
Applicant:
Mitsubishi Pencil Company, Limited, Tokyo, JP;
Inventors:
Assignee:
MITSUBISHI PENCIL COMPANY, LIMITED, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D 11/17 (2014.01); B01J 13/02 (2006.01); C09D 11/18 (2006.01); C09D 17/00 (2006.01);
U.S. Cl.
CPC ...
C09D 11/17 (2013.01); B01J 13/02 (2013.01); C09D 11/18 (2013.01); C09D 17/00 (2013.01); C09D 17/001 (2013.01); C09D 17/005 (2013.01); C09D 17/007 (2013.01);
Abstract
Provided is an aqueous ink composition for a writing instrument with excellent stability of ink flow and the like, in which aggregation of a microcapsule pigment and clogging due to such aggregation are suppressed. The aqueous ink composition for a writing instrument includes a microcapsule pigment which includes inside, at least, a pigment and a medium of a fatty acid polyol ester. A melting point of the fatty acid polyol ester is preferably 40° C. or higher, and is preferably 70° C. or lower.