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:
Aug. 25, 2020
Filed:
Jun. 29, 2017
Applicant:
Forschungszentrum Juelich Gmbh, Juelich, DE;
Inventors:
Assignee:
FORSCHUNGSZENTRUM JUELICH GMBH, Juelich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B 35/645 (2006.01); C04B 35/488 (2006.01); C04B 41/00 (2006.01); C04B 41/50 (2006.01); C04B 35/486 (2006.01); C04B 41/87 (2006.01); B32B 18/00 (2006.01); C04B 35/443 (2006.01); C04B 111/80 (2006.01);
U.S. Cl.
CPC ...
C04B 35/6455 (2013.01); B32B 18/00 (2013.01); C04B 35/443 (2013.01); C04B 35/486 (2013.01); C04B 35/488 (2013.01); C04B 35/645 (2013.01); C04B 41/00 (2013.01); C04B 41/009 (2013.01); C04B 41/5029 (2013.01); C04B 41/5045 (2013.01); C04B 41/87 (2013.01); C04B 2111/805 (2013.01); C04B 2235/3225 (2013.01); C04B 2235/604 (2013.01); C04B 2235/664 (2013.01); C04B 2235/9607 (2013.01); C04B 2235/9653 (2013.01); C04B 2237/34 (2013.01); C04B 2237/348 (2013.01); C04B 2237/58 (2013.01); C04B 2237/582 (2013.01); C04B 2237/704 (2013.01);
Abstract
A method for producing a transparent polycrystalline ceramic includes forming at least one planar transparent region near a surface within the ceramic, wherein the at least one planar transparent region has a lower thermal expansion coefficient than other regions of the ceramic. The method further includes generating compressive stresses in the at least one planar transparent region near the surface after a thermal treatment and cooling.