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:
Apr. 17, 2007
Filed:
May. 09, 2005
Otmar Becker, Langen, DE;
Falk Gabel, Schlangenbad, DE;
Christian Roos, Mainz, DE;
Bernd Ruedinger, Mainz, DE;
Friedrich Siebers, Nierstein, DE;
Michael Bug, Muehltal, DE;
Ioannis Kosmas, Stadecken-Elsheim, DE;
Wolfgang Schmidbauer, Mainz-Finthen, DE;
Martin Mueller, Darmstadt, DE;
Otmar Becker, Langen, DE;
Falk Gabel, Schlangenbad, DE;
Christian Roos, Mainz, DE;
Bernd Ruedinger, Mainz, DE;
Friedrich Siebers, Nierstein, DE;
Michael Bug, Muehltal, DE;
Ioannis Kosmas, Stadecken-Elsheim, DE;
Wolfgang Schmidbauer, Mainz-Finthen, DE;
Martin Mueller, Darmstadt, DE;
Schott AG, Mainz, DE;
Abstract
The method produces a glass-ceramic article substantially in the form of a plate with improved high temperature difference resistance or strength. The glass-ceramic article contains keatite mixed crystals (KMK) or high quartz mixed crystals (HQMK) as well as the keatite mixed crystals (KMK). The method includes heating a glass-ceramic in a high quartz mixed crystal state to form the keatite mixed crystals with a heating rate of 20 K/min to 150 K/min, preferably more than 15 K/min, especially preferably more than 20 K/min. These high heating rates increase the temperature difference resistance.