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:
May. 04, 2010
Filed:
Jun. 04, 2007
Applicants:
Akihiro Ogata, Kamisu, JP;
Nagatoshi Kobayashi, Kamisu, JP;
Keiko Otsubo, Kamisu, JP;
Inventors:
Assignee:
DIC Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C09B 29/15 (2006.01); C09B 41/00 (2006.01); C09B 63/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In C. I. pigment red 57:1 of the present invention, the total content of 3-hydroxy-2-naphthoic acid and a metal salt thereof, which is measured by quantitative analysis using liquid chromatography, is 2,500 ppm or less as converted into the 3-hydroxy-2-naphthoic acid.