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. 27, 2013
Filed:
Feb. 18, 2011
Applicants:
Bianca Schreder, Sulzbach, DE;
Maria-louisa Reich, Frankfurt am Main, DE;
Olaf Claussen, Undenheim, DE;
Inventors:
Bianca Schreder, Sulzbach, DE;
Maria-Louisa Reich, Frankfurt am Main, DE;
Olaf Claussen, Undenheim, DE;
Assignee:
Schott AG, Mainz, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C 10/14 (2006.01); C03C 10/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
The transparent glass ceramic with low thermal expansion is produced from a glass that is fined with a combination of environmentally friendly fining agents, specifically a combination of SnOwith at least one of SbO, SO, Brand Cl. The glass is free of arsenic and is preferably made from a mixture of SiO, AlO, LiO, TiO, ZrOand ZnO. A mirror support for astronomy and a prism for LCD lithography are advantageously made from this glass ceramic.