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:
Oct. 22, 1991
Filed:
Apr. 14, 1988
Takuya Gentsu, Sendai, JP;
Kyocera Corporation, Kyoto, JP;
Abstract
Disclosed is colored, partially stabilized zirconia ceramics containing a colorant component and a stabilizer, wherein the zirconia ceramics contains 0.05 to 15% by weight of zirconium carbide based on the entire ceramics, the content of free carbon is lower than 0.1% by weight, and the crystal phase of the zirconia is composed of tetragonal crystals. This colored, partially stabilized zirconia ceramics is prepared by a process comprising molding a composition comprising 0.1 to 10 parts by weight of a colorant component and 90 to 99.9 parts by weight of zirconia and a stabilizer into a molded body having a predetermined shape, sintering the molded body, and sintering the obtained sintered body in a carbon atmosphere to form ceramics containing 0.05 to 15% by weight of zirconium carbide, in which the crystal phase of zirconia is composed of tetragonal crystals.