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:
Feb. 03, 2009
Filed:
Jul. 03, 2003
Isao Ota, Nei-gun, JP;
Kenji Tanimoto, Nei-gun, JP;
Gen Yamada, Nei-gun, JP;
Noriyuki Takakuma, Nei-gun, JP;
Isao Ota, Nei-gun, JP;
Kenji Tanimoto, Nei-gun, JP;
Gen Yamada, Nei-gun, JP;
Noriyuki Takakuma, Nei-gun, JP;
Nissan Chemical Industries, Ltd., Tokyo, JP;
Abstract
A method of milling cerium compound by means of a ball mill using a milling medium, characterized in that ratio H/r of radius r of a cylindrical ball mill container and depth Hof the milling medium in the ball mill container disposed horizontally ranges from 1.2 to 1.9, and the ball mill container is rotated at a rotational speed which is 50% or less of critical rotational speed N=299/rof the ball mill container converted from the radius r expressed in centimeter. The milling method can be carried out in a wet or dry process, and the cerium compound is preferably cerium oxide. The method can be also applied for producing a cerium compound slurry.