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:
Apr. 14, 2026
Filed:
Oct. 28, 2020
Kabushiki Kaisha Pilot Corporation, Tokyo-to, JP;
Takahito Miyake, Tokyo-to, JP;
Chinatsu Shinozaki, Tokyo-to, JP;
KABUSHIKI KAISHA PILOT CORPORATION, Tokyo-To, JP;
Abstract
[Problem] To provide an oil-based ink composition for ballpoint pens and also an oil-based ballpoint pen employing the composition. The ink composition inhibits a ball seat from wearing under high pen pressure (writing load: 300 to 500 gf), improves writing feeling, and is excellent in writing performance at the beginning of handwriting, in temporal stability and in ink followability. [means to solve the problem] An oil-based ink composition for ballpoint pens, comprising a colorant, an organic solvent, and a polyoxy-alkylene glyceryl ether.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile