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:
Dec. 01, 2020
Filed:
Jun. 14, 2017
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); B43K 7/00 (2006.01); B43K 8/02 (2006.01); C09D 11/18 (2006.01);
U.S. Cl.
CPC ...
C09D 11/17 (2013.01); B43K 7/00 (2013.01); B43K 8/02 (2013.01); C09D 11/18 (2013.01);
Abstract
Provided is an aqueous ink composition for writing instruments, which enables desired colorfulness to be obtained easily. The aqueous ink composition for writing instruments according to the present invention contains: pigmented microspheres each having a matrix comprising water and a polymer, and a water-insoluble dye; and unpigmented microspheres.