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. 28, 2002
Filed:
May. 19, 2000
Nagayuki Takao, Ryugasaki, JP;
Hitachi Maxell, Ltd., Osaka, JP;
Abstract
An object of the present invention is to provide a dispersion composition which is free from the precipitation problem because of its improved dispersion stability, permits employment of various kinds of organic solvents and insoluble granular materials, is widely utilizable, and is useful as, in particular, a liquid developer or a jet printing ink, in which electrostatic force is utilized. The present invention provides a dispersion composition comprising a dispersion of a granular material in an organic solvent and further comprising a high-molecular weight compound having acidic groups and a high-molecular weight compound having basic groups, at least a part of said high-molecular compounds being insoluble in the organic solvent, and said high-molecular weight compounds being adsorbed on at least a portion of the granular material.