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:
May. 20, 2008
Filed:
Jun. 04, 2004
Joerg Fechner, Mainz, DE;
Andreas Reisse, Weiden, DE;
Franz Ott, Mitterteich, DE;
Brigitte Hueber, Weiden, DE;
Joerg Fechner, Mainz, DE;
Andreas Reisse, Weiden, DE;
Franz Ott, Mitterteich, DE;
Brigitte Hueber, Weiden, DE;
Schott AG, Mainz, DE;
Abstract
The method for making UV-absorbing glass, which transmits in a visible range, includes melting raw materials to form a melt and producing the melt under oxidative conditions. The UV-absorbing glass is free of PbO and has the following composition (in % by weight): SiO, 55-79; BO, 3-25; AlO, 0-10; LiO, 0-10; NaO, 0-10; KO, 0-10; MgO, 0-2; CaO, 0-3; SrO, 0-3; BaO, 0-3; ZnO, 0-3; ZrO, 0-3; CeO, 0-1; FeO, 0-1; WO, 0-3; BiO, 0-3; MoO, 0-3; with Σ LiO+NaO+KO=0.5 to 16 and Σ MgO+CaO+SrO+BaO+ZnO=0-10. The melt composition is characterized by including 0.1 to 10 % TiOand from 0.01-10 % AsO. The glass made by the method and its properties are also disclosed. The glass is useful in lamps, LCD displays, monitors and glass-to-metal seals with molybdenum, tungsten and Fe—Co—Ni alloys.