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. 16, 2025
Filed:
Jun. 06, 2023
Kcm Corporation, Nagoya, JP;
Akira Kawai, Nagoya, JP;
KCM Corporation, Nagoya, JP;
Abstract
A zirconia sintered body with excellent translucency and hydrothermal degradation resistance is provided. A production method for a zirconia sintered body that is to be disclosed herein includes a process body preparing step of preparing a process body containing zirconia and yttria and/or ytterbia, in which a total proportion of the yttria and the ytterbia is 4 mol % or more and 6 mol % or less when a total of the zirconia, the yttria, and the ytterbia is set to 100 mol %, a first heating step of heating the process body at 800° C. or higher and 1200° C. or lower, a second heating step of heating the process body after the first heating step at 1600° C. or higher and 2000° C. or lower by microwave heating, and a cooling step of decreasing a temperature of the process body after the second heating step to 1300° C. at a rate of 50° C./min or more.