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:
Jun. 15, 2021
Filed:
Jul. 08, 2019
Applicant:
Vita Zahnfabrik H. Rauter Gmbh & Co. KG, Bad Säckingen, DE;
Inventors:
Michael Tholey, Bad Säckingen, DE;
Michael Dorn, Bad Säckingen, DE;
Michael Godiker, Bad Säckingen, DE;
Norbert Thiel, Bad Säckingen, DE;
Assignee:
Vita Zahnfabrik H. Rauter GmbH & Co. KG, Bad Säckingen, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B28B 1/00 (2006.01); B32B 18/00 (2006.01); C04B 35/486 (2006.01); C04B 35/48 (2006.01); A61C 13/083 (2006.01); A61C 13/09 (2006.01); C04B 38/00 (2006.01); C04B 111/00 (2006.01);
U.S. Cl.
CPC ...
B28B 1/008 (2013.01); A61C 13/083 (2013.01); A61C 13/09 (2013.01); B32B 18/00 (2013.01); C04B 35/48 (2013.01); C04B 35/486 (2013.01); C04B 38/00 (2013.01); C04B 2111/00836 (2013.01); C04B 2235/3246 (2013.01); C04B 2235/5409 (2013.01); C04B 2235/5445 (2013.01); C04B 2235/5472 (2013.01); C04B 2235/661 (2013.01); C04B 2235/77 (2013.01); C04B 2235/9615 (2013.01); C04B 2235/9661 (2013.01); C04B 2237/066 (2013.01); C04B 2237/068 (2013.01); C04B 2237/341 (2013.01); C04B 2237/348 (2013.01); C04B 2237/403 (2013.01); Y10T 428/24997 (2015.04);
Abstract
A non-dense sintered ceramic molded body having at least two layers, wherein a first powdery ceramic material forming a layer is contacted with at least a second powdery material forming at least a second layer. The body has a color gradient and maintains dimensional stability during sintering and forming. An admixing component and a common sintering temperature are used to control the volume decrease of the layers during sintering.