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:
Jul. 19, 2011
Filed:
Mar. 06, 2008
Applicants:
Kazuhiko Nakiri, Ibaraki, JP;
Sadamu Kuse, Ibaraki, JP;
Hiroyuki Mitsuhashi, Ibaraki, JP;
Inventors:
Assignee:
Hitachi Maxell, Ltd., Ibaraki-shi, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D 5/23 (2006.01);
U.S. Cl.
CPC ...
Abstract
A magnetic paint is prepared by a method comprising a surface-treating step for magnetic powder, to obtain a first composition by mixing and stirring a composition which comprises a magnetic powder, a dispersant and/or a binder resin, and an organic solvent, and which contains 40% by weight or less of a non-solvent component, while applying a shear force to the composition; and a concentrating step to obtain a second composition by concentrating the first composition until the content of the non-solvent components of the first composition reaches 80% by weight or more.