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:
Mar. 14, 2000
Filed:
Dec. 10, 1998
Applicant:
Inventor:
Hisashi Iida, Yokohama, JP;
Assignee:
Mitsubishi Pencil Kabushiki Kaisha, Shinagawa, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09D / ; C09D / ; C09D / ; C09D / ;
U.S. Cl.
CPC ...
523161 ; 106 3127 ; 106 3133 ;
Abstract
A water based dye ink composition for a free ink rollerball pen characterized in that white resin particles which are insoluble in an aqueous medium and have an average particle diameter of 100 to 1000 nm and a refractive index of 1.50 or more at 20.degree. C. are added to a water based ink composition for a writing instrument comprising a dye and an aqueous medium to thereby allow the visible color of the ink liquid to be approximate to the visible color of lines written on a sheet of white paper.
Iida, Hisashi. (2000). Water based dye ink composition for free ink rollerball pen (U.S. Patent No. 6037391). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6037391
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile