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. 17, 2019
Filed:
Jan. 10, 2014
Hewlett-packard Development Company, L.p., Houston, TX (US);
Keshava A. Prasad, San Marcos, CA (US);
Dennis Z. Guo, San Diego, CA (US);
Niamh Kelly, Dublin, IE;
Kenneth Hickey, Dublin, IE;
Kevin Rattigan, Leixlip, IE;
Claire Harley, Leixlip, IE;
Hewlett-Packard Development Company, L.P., Spring, TX (US);
Abstract
The present disclosure relates to magenta inkjet inks having a quinacridone pigment and an azo pigment. The azo pigment has at least one azo compound having the formula (I), in which Ris selected from H, aryl and Cto Calkyl, and R, Rand Rare each independently selected from H, a Cto Calkyl, an oxygen-containing, a nitrogen-containing and a sulphur-containing functional group. Where Ris aryl, the aryl is not a phenyl group having at least one hydrogen atom that has been substituted with a chlorine atom.