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. 31, 1994
Filed:
Jan. 19, 1993
Hisanori Fujita, Osaka, JP;
Mikihiko Nakanishi, Osaka, JP;
Sakura Color Products Corporation, Osaka, JP;
Abstract
An erasable ink composition for writing on an impervious writing surface comprising an organic solvent, a resin, a pigment, and a separating agent which comprises a polyoxyethylene polyoxypropylene monoalkyl ether which is liquid at normal temperatures in an amount of 5-20% by weight, and optionally at least one organic compound selected from the group consisting of a carboxylic acid ester and a polyoxypropylene monoalkyl ether which is liquid at normal temperatures in an amount of 2-10% by weight in conjunction.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile