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:
Jul. 11, 2000
Filed:
Oct. 08, 1998
Applicant:
Inventors:
Nobukatsu Oomichi, Yamaguchi, JP;
Koji Matsui, Yamaguchi, JP;
Akemi Kato, Yamaguchi, JP;
Michiharu Oogai, Yamaguchi, JP;
Assignee:
Tosoh Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
501103 ; 501105 ;
Abstract
A novel zirconia sintered body is provided which contains Y.sub.2 O.sub.3 in a solid solution state, and has tetragonal crystal grains oriented at an orientation degree of not higher than 45%. A process for producing the zirconia sintered body is also provided. This zirconium sintered body deteriorates less, and excellent in stability of surface smoothness, and can be produced by a simple process.