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:
Jan. 08, 2002
Filed:
May. 13, 1999
Applicant:
Inventors:
Yuzo Yamamoto, Osaka, JP;
Manabu Shibata, Tochigi, JP;
Koji Taira, Wakayama, JP;
Toshiya Hagihara, Wakayama, JP;
Assignee:
Kao Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C09K 3/14 ; C09G 1/02 ; B24B 1/00 ;
U.S. Cl.
CPC ...
C09K 3/14 ; C09G 1/02 ; B24B 1/00 ;
Abstract
The present invention relates to an abrasive composition for substrates of magnetic recording media, containing at least an abrasive, an abrasive auxiliary and water. The abrasive auxiliary comprises an aliphatic organic sulfate, an oxyalkylene alkyl ether sulfate or an amphoteric surface active agent, and the abrasive composition has a pH of 1 to 13.