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.:

US 8372190 B1

PDF
Full Text
Expired
Date of Patent:
Feb. 12, 2013

Filed:

Oct. 30, 2008
Applicants:

Keiichi Tateishi, Shizuoka, JP;

Hiroshi Yamamoto, Kanagawa, JP;

Shigeaki Tanaka, Shizuoka, JP;

Inventors:

Keiichi Tateishi, Shizuoka, JP;

Hiroshi Yamamoto, Kanagawa, JP;

Shigeaki Tanaka, Shizuoka, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D 11/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

An ink set including at least a yellow ink composition, a magenta ink composition and a cyan ink composition, wherein the yellow ink composition contains, as the yellow colorant, at least one member selected from the group consisting of a compound represented by a specific structure and a salt thereof, each of the yellow colorant, the magenta colorant and the cyan colorant contained in the yellow ink composition, the magenta ink composition and the cyan ink composition, respectively, has at least one ionic hydrophilic group, the counter ion of the ionic hydrophilic group contains a lithium ion, and the lithium ion concentration is 70 mol % or more based on all cations in each ink composition.


Find Patent Forward Citations

Tateishi, Keiichi. (2013). Ink set, inkjet recording method and recorded material (U.S. Patent No. 8372190). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8372190

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