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:
Sep. 19, 2023
Filed:
Jan. 19, 2018
Hewlett-packard Development Company, L.p., Spring, TX (US);
Dennis Z. Guo, San Diego, CA (US);
Jie Zheng, San Diego, CA (US);
Tienteh Chen, San Diego, CA (US);
David Michael Ingle, San Diego, CA (US);
Rodney David Stramel, San Diego, CA (US);
June Yang, Aguadilla, TR;
Marcos A. Barreto Caban, Aguadilla, TR;
Hewlett-Packard Development Company, L.P., Spring, TX (US);
Abstract
The present disclosure is drawn to aqueous pigment dispersions. In one example, an aqueous pigment dispersion can include from 40 wt % to 90 wt % water, from 2 wt % to 30 wt % organic co-solvent, from 7.5 wt % to 30 wt % copper phthalocyanine pigment, from 0.5 wt % to 5 wt % styrene-acrylic dispersant, and from 0.5 wt % to 5 wt % hydrophilic polyurethane dispersant having a weight average molecular weight from 10,000 Mw to 30,000 Mw. The styrene-acrylic dispersant and the hydrophilic polyurethane dispersant can be present at a weight ratio from 1:10 to 2:1.