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:
Mar. 31, 2009
Filed:
Jul. 16, 2004
Applicants:
Kazuhisa Kajihara, Ehime, JP;
Yoshiaki Takeuchi, Ehime, JP;
Inventors:
Kazuhisa Kajihara, Ehime, JP;
Yoshiaki Takeuchi, Ehime, JP;
Assignee:
Sumitomo Chemical Company, Limited, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
C01F 7/02 (2006.01); C01F 7/30 (2006.01); C08K 3/22 (2006.01); C09D 201/00 (2006.01); C09D 5/23 (2006.01);
U.S. Cl.
CPC ...
Abstract
A coating composition, a method for producing the coating composition, a coating film and magnetic recording medium are described. The coating composition comprises a binder, a solvent, and an α-alumina powder, wherein the α-alumina powder satisfies the following (a) and (b):