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:
Jan. 07, 2003
Filed:
Nov. 09, 2000
Kabushiki Kaisha Pilot, Tokyo, JP;
Abstract
A non-aqueous ball point pen ink of this invention includes a colorant, an organic solvent, a non-Newtonian viscosity imparting agent and a thickening agent as main components. The thickening agent comprises only polyvinyl pyrrolidone with a weight-average molecular weigh of about 40,000 to 55,000. A non-Newtonian viscosity index of the ink is not less than 0.1 and less than 0.4, a viscosity in a shearing speed of 500 sec is not less than 1,000 and less than 3,000 mPa•s at 20° C., and the viscosity in the shearing speed of 0.19 sec is not less than 40,000 mPa•s and not more than 70,000 mPa•s at 20° C.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile