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. 03, 2017
Filed:
Mar. 10, 2014
Kuraray Noritake Dental Inc., Kurashiki-shi, JP;
KURARAY NORITAKE DENTAL INC., Kurashiki-shi, JP;
Abstract
A zirconia sintered body, where when cross-sectional area of each zirconia crystal-grain is calculated in image of cross section of zirconia sintered body, converted crystal-grain size of each zirconia crystal-grain is calculated based on cross-sectional area where each zirconia crystal-grain has circular cross-sectional shape, zirconia crystal-grains are classified into class of <0.4 μm, class of ≧0.4 and <0.76 μm, and class of ≧0.76 μm based on converted crystal-grain size, total cross-sectional area of zirconia crystal-grains is calculated in each of classes, and rate of cross-sectional area to total cross-sectional area of all zirconia crystal-grains whose cross-sectional area has been calculated is calculated in each class, rate of cross-sectional area of zirconia crystal-grains in class of <0.4 μm is 4% to 35%, rate of cross-sectional area of zirconia crystal-grains in class of ≧0.4 and <0.76 μm is 24% to 57%, and rate of cross-sectional area of zirconia crystal-grains in class of ≧0.76 μm-is 16% to 62%.