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. 28, 2006
Filed:
Dec. 11, 2002
José Zimmer, Ingelheim, DE;
Jörg Hinrich Fechner, Mainz, DE;
José Zimmer, Ingelheim, DE;
Jörg Hinrich Fechner, Mainz, DE;
Schott AG, Mainz, DE;
Abstract
The invention relates to a glass ceramic, wherein the initial glass comprises 30–65 percent (by weight) SiO; 5–30 percent (by weight) NaO; 5–30 percent (by weight) CaO, and 0-15 percent (by weight) PO, and wherein the main crystalline phases comprise alkali—alkaline earth—silicate and/or alkali silicate and/or alkaline earth silicate. The invention is characterized in that either a glass ceramic with a single crystalline phase 1 NaO—2CaO—3 SiOis excluded, or the crystalline size of the glass ceramic is <10 μm, or the weight fraction of SiOis <47%.