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. 14, 2000
Filed:
Jul. 03, 1997
Applicant:
Inventors:
Qian Qiu Zhao, Landenberg, PA (US);
David Allen Zimmerman, Wilmington, DE (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05D / ; B05D / ; C23C / ;
U.S. Cl.
CPC ...
427215 ; 427242 ; 4272553 ; 4273762 ; 427427 ; 106436 ; 106442 ;
Abstract
This invention relates to methods of preparing grinding media consisting essentially of sintered titanium dioxide (TiO.sub.2) particles. The method involves preparing base TiO.sub.2 particles, coating the base TiO.sub.2 particles with at least one hydrous oxide, compressing the TiO.sub.2 particles, and granulating the TiO.sub.2 particles to form TiO.sub.2 particles having substantially rounded edges. The invention further encompasses the resulting grinding media prepared by such methods and to methods of using such grinding media in media-milling particulate material such as titanium dioxide pigments.