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. 01, 2011
Filed:
Oct. 10, 2006
Junichi Iwasawa, Fukuoka, JP;
Ryoichi Nishimizu, Fukuoka, JP;
Hironori Hatono, Fukuoka, JP;
Hiroaki Ashizawa, Fukuoka, JP;
Junichi Iwasawa, Fukuoka, JP;
Ryoichi Nishimizu, Fukuoka, JP;
Hironori Hatono, Fukuoka, JP;
Hiroaki Ashizawa, Fukuoka, JP;
Toto Ltd., Fukuoka, JP;
Abstract
According to the present invention, a structure made of yttrium oxide is formed on a surface of a substrate comprises yttrium oxide polycrystals as a main component, a boundary layer made of hyaline does not substantially exist on a boundary face between crystals which form the structure, and both a cubic system and a monoclinic system exist in the crystal system of the yttrium oxide polycrystals. With this, it is possible to adjust the hardness of the structure made of yttrium oxide formed on a surface of a substrate to be larger than that of an yttrium oxide sintered body.