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.

Date of Patent:
Mar. 24, 2026

Filed:

Dec. 26, 2019
Applicant:

Kuraray Noritake Dental Inc., Kurashiki, JP;

Inventors:

Shinichiro Kato, Aichi, JP;

Yoshihisa Ito, Aichi, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B 35/48 (2006.01); A61C 13/00 (2006.01); A61C 13/083 (2006.01); B28B 11/24 (2006.01); C04B 35/626 (2006.01); C04B 35/64 (2006.01);
U.S. Cl.
CPC ...
C04B 35/48 (2013.01); A61C 13/0004 (2013.01); A61C 13/083 (2013.01); B28B 11/243 (2013.01); C04B 35/6262 (2013.01); C04B 35/64 (2013.01); C04B 2235/3246 (2013.01); C04B 2235/6567 (2013.01); C04B 2235/661 (2013.01); C04B 2235/762 (2013.01); C04B 2235/765 (2013.01); C04B 2235/9653 (2013.01);
Abstract

The present invention provides a zirconia pre-sintered body that can be fired into a sintered body having translucency and strength suited for dental use (particularly, at the dental clinic), even with a short firing time. The present invention relates to a zirconia pre-sintered body comprising: zirconia; and a stabilizer capable of inhibiting a phase transformation of zirconia, wherein the zirconia predominantly comprises a monoclinic crystal system, and the zirconia pre-sintered body comprises a plurality of layers that differ from each other in the content of the stabilizer relative to the total mole of the zirconia and the stabilizer.


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