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:
Dec. 26, 1978
Filed:
Feb. 25, 1977
Applicant:
Inventors:
Kozo Ojiri, Kamakura, JP;
Kohzo Sakai, Tokyo, JP;
Assignee:
Asahi Glass Company Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B03C / ;
U.S. Cl.
CPC ...
2091 / ; 209 11 ; 423 73 ; 423 80 ;
Abstract
Titanium dioxide component is removed from a mineral containing titanium dioxide component which is difficult to be separated by the conventional electrostatic separation. In the electrostatic separation from the mineral containing titanium dioxide component, the mineral is pretreated by a heat-treatment in an atmosphere of reducing, neutral or inert gas or a mixture thereof so as to change the electrostatic property of titanium dioxide and separating by an electrostatic separation.