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:
Jun. 02, 2009
Filed:
Dec. 26, 2003
Applicants:
Kazuhiro Kawauchi, Osaka, JP;
Takeshi Omatsu, Osaka, JP;
Inventors:
Kazuhiro Kawauchi, Osaka, JP;
Takeshi Omatsu, Osaka, JP;
Assignee:
Sakura Color Products Corporation, Osaka-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
C09D 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A water base pigment ink composition for inner lead type writing instruments do not comprise white colored inorganic pigments or white colored resin particles as coloring materials and the content of pigment is 0.5 to 7 wt %, the content of water-soluble resin is 2 to 10 wt % with respect to the total amount of the ink, and the viscosity is 3.5 to 10 mPa·s.