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:
Nov. 26, 2019
Filed:
Dec. 22, 2016
Applicant:
Dentsply Sirona Inc., York, PA (US);
Inventors:
Lothar Volkl, Goldbach, DE;
Martin Kutzner, Neuberg, DE;
Tanja Oefner, Linsengericht, DE;
Stefan Fecher, Johannesberg, DE;
Assignee:
DENTSPLY SIRONA Inc., York, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61C 13/08 (2006.01); A61C 13/00 (2006.01); A61C 13/083 (2006.01); A61C 13/09 (2006.01); A61C 5/77 (2017.01); A61C 5/73 (2017.01); B32B 18/00 (2006.01); C04B 35/486 (2006.01); A61C 8/00 (2006.01); B28B 3/02 (2006.01); C04B 35/48 (2006.01); C04B 37/00 (2006.01);
U.S. Cl.
CPC ...
A61C 13/0022 (2013.01); A61C 5/73 (2017.02); A61C 5/77 (2017.02); A61C 8/0013 (2013.01); A61C 13/081 (2013.01); A61C 13/082 (2013.01); A61C 13/083 (2013.01); A61C 13/09 (2013.01); B28B 3/021 (2013.01); B32B 18/00 (2013.01); C04B 35/48 (2013.01); C04B 35/486 (2013.01); C04B 37/001 (2013.01); C04B 2235/3217 (2013.01); C04B 2235/3224 (2013.01); C04B 2235/3225 (2013.01); C04B 2235/3232 (2013.01); C04B 2235/3239 (2013.01); C04B 2235/3241 (2013.01); C04B 2235/3244 (2013.01); C04B 2235/3262 (2013.01); C04B 2235/3272 (2013.01); C04B 2235/3277 (2013.01); C04B 2235/3279 (2013.01); C04B 2235/3281 (2013.01); C04B 2235/72 (2013.01); C04B 2235/765 (2013.01); C04B 2235/9607 (2013.01); C04B 2235/9653 (2013.01); C04B 2235/9661 (2013.01); C04B 2237/348 (2013.01); C04B 2237/58 (2013.01); C04B 2237/84 (2013.01);
Abstract
The invention relates to a method for the preparation of a blank of a ceramic material, wherein a first ceramic material and then a second ceramic material of different compositions are filled into a die and wherein the materials are pressed and after pressing are sintered. A layer of the first ceramic material is thereby filled into the die and a first cavity formed in the layer, the second ceramic material is then filled into the first open cavity and the materials pressed together and then heat-treated.