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:
Oct. 18, 2011
Filed:
Dec. 19, 2008
Uwe Kolberg, Mainz, DE;
Axel Curdt, Georgenborn, DE;
Monika Gierke, Wiesbaden, DE;
Magdalena Winkler-trudewig, Mainz, DE;
Guenther Kron, Mainz, DE;
Doris Ehrt, Jena, DE;
Uwe Kolberg, Mainz, DE;
Axel Curdt, Georgenborn, DE;
Monika Gierke, Wiesbaden, DE;
Magdalena Winkler-Trudewig, Mainz, DE;
Guenther Kron, Mainz, DE;
Doris Ehrt, Jena, DE;
Schott AG, Mainz, DE;
Abstract
A core glass and a fiber-optic light guide made from it and a cladding glass are described. The core glass is in the alkali-zinc-silicate system and contains, in Mol % on an oxide basis: 54.5-65, SiO; 18.5-30, ZnO; 8-20, Σ alkali metal oxides; 0.5-3, LaO; 2-5, ZrO; 0.02-5, HfO; 2.02-5, Σ ZrO+HfO; 0.4-6, BaO; 0-6, SrO; 0-2, MgO; 0-2, CaO; 0.4-6, Σ alkaline earth metal oxides; 0.5-3, LiO, but no more LiO than 25% of the Σ alkali metal oxides; >58.5, Σ SiO+ZrO+HfO. A molar ratio of NaO/KO is from 1/1.1 to 1/0.3. A molar ratio of ZnO to BaO is greater than 3.5.