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:
Mar. 10, 2009
Filed:
Aug. 03, 2006
Thorsten Doehring, Mainz, DE;
Ralf Jedamzik, Griesheim, DE;
Hauke Esemann, Woerrstadt, DE;
Eva Hoelzel, Ober-Olm, DE;
Ina Mitra, Stadecken-Elsheim, DE;
Thorsten Doehring, Mainz, DE;
Ralf Jedamzik, Griesheim, DE;
Hauke Esemann, Woerrstadt, DE;
Eva Hoelzel, Ober-Olm, DE;
Ina Mitra, Stadecken-Elsheim, DE;
Schott AG, Mainz, DE;
Abstract
A lithium-aluminosilicate glass ceramic is transformed by a suitable heat treatment into a glass ceramic comprising at least 80 vol.-% of keatite mixed crystals. This may be utilized for the preparation of optical or mechanical high-precision parts having a high temperature resistance, a good stability and compatibility with components consisting of metals having a small coefficient of thermal expansion based on nickel and iron, such as Invar®.