IDiyas

For the Inventor, By the Inventor

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.:

US 11401461 B1

PDFFull Text
Date of Patent:
Aug. 02, 2022

Filed:

Jul. 27, 2018

Zirconia sintered body containing fluorescent agent

Applicant:

Kuraray Noritake Dental Inc., Kurashiki, JP;

Inventors:

Yasutaka Kudo, Aichi, JP;

Makiko Kato, Aichi, JP;

Koichi Okada, Okayama, JP;

Assignee:

KURARAY NORITAKE DENTAL INC., Kurashiki, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

C Melissa Koslow

Int. Cl.
CPC ...
C09K 11/02 (2006.01); A61C 13/08 (2006.01); A61C 13/083 (2006.01); A61C 13/087 (2006.01); C04B 35/488 (2006.01); C04B 35/624 (2006.01); C04B 35/64 (2006.01); C09K 11/08 (2006.01); C09K 11/67 (2006.01); C04B 35/63 (2006.01); B28B 1/00 (2006.01); B82B 3/00 (2006.01);
U.S. Cl.
CPC ...
C09K 11/02 (2013.01); A61C 13/082 (2013.01); A61C 13/083 (2013.01); A61C 13/087 (2013.01); B28B 1/00 (2013.01); B28B 1/001 (2013.01); B82B 3/00 (2013.01); C04B 35/488 (2013.01); C04B 35/624 (2013.01); C04B 35/6303 (2013.01); C04B 35/64 (2013.01); C09K 11/08 (2013.01); C09K 11/671 (2013.01); C04B 2235/3246 (2013.01); C04B 2235/3298 (2013.01); C04B 2235/5454 (2013.01); C04B 2235/6023 (2013.01); C04B 2235/6027 (2013.01); C04B 2235/6567 (2013.01); C04B 2235/762 (2013.01); C04B 2235/785 (2013.01); C04B 2235/96 (2013.01); C04B 2235/9646 (2013.01); C04B 2235/9653 (2013.01);
Abstract

The present invention provides a zirconia sintered body containing a fluorescent agent and having excellent translucency and excellent strength. The present invention also provides a zirconia shaped body and a zirconia calcined body from which the zirconia sintered body can be obtained. The present invention relates to a zirconia sintered body comprising a fluorescent agent, wherein the zirconia sintered body comprises 4.5 to 9.0 mol % yttria, and has a crystal grain size of 180 nm or less, and a three-point flexural strength of 500 MPa or more. The present invention relates to a zirconia shaped body comprising a fluorescent agent, wherein the zirconia shaped body comprises 4.5 to 9.0 mol % yttria, and has a three-point flexural strength of 500 MPa or more after being sintered at 1,100° C. for 2 hours under ordinary pressure, and a crystal grain size of 180 nm or less after being sintered at 1,100° C. for 2 hours under ordinary pressure. The present invention relates to a zirconia calcined body comprising a fluorescent agent, wherein the zirconia calcined body comprises 4.5 to 9.0 mol % yttria, and has a three-point flexural strength of 500 MPa or more after being sintered at 1,100° C. for 2 hours under ordinary pressure, and a crystal grain size of 180 nm or less after being sintered at 1,100° C. for 2 hours under ordinary pressure.

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