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. 30, 2025
Filed:
Oct. 26, 2023
Seiko Epson Corporation, Tokyo, JP;
SEIKO EPSON CORPORATION, , JP;
Abstract
A dispersion liquid includes water, a coloring material, and a dispersion resin that disperses the coloring material, and the dispersion resin has a constituent unit A containing a hydrophobic monomer, a constituent unit B containing an unsaturated aliphatic dicarboxylic acid monomer, and a constituent unit C containing an acrylamide monomer having a sulfonic acid group. The weight-average molecular weight of the dispersion resin is from 10,000 to 100,000, the content of the constituent unit A is 40 mol % or more relative to the total amount of the dispersion resin, and the content of the constituent unit B is 4 mol % or more relative to the total amount of the dispersion resin.