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. 11, 2000
Filed:
Jun. 26, 1998
Kazumi Goto, Yokohama, JP;
Shuji Ichikawa, Yokohama, JP;
Mitsubishi Pencil Kabushiki Kaisha, Tokyo, JP;
Abstract
An ink composition for writing instruments comprising an organic solvent having an SP value of 5 to 15 and a vapor pressure of 0.01 to 45 mmHg at 20.degree. C., a colorant comprising a pigment and/or a dye, a resin having a solubility of 7% or less in water or ethanol at 25.degree. C. and a fluorinated surfactant, wherein the above ink composition can be used to write on various writing surfaces such as a resin surface, a glass surface and a metal surface, is excellent in a line sticking property against non-absorbing surfaces, a water resistance and an alcohol resistance and can also be used to write certainly even on writing surfaces having a releasing property in a water-repellent property.