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. 21, 2008
Filed:
May. 27, 2004
Herman Walser, Breitenwang, AT;
Wolfram Knabl, Reutte, AT;
Gerhard Leichtfried, Reutte, AT;
Jörg Hinrich Fechner, Mainz, DE;
Franz Ott, Mitterteich, DE;
Ralf Diezel, Mitterteich, DE;
Brigitte Hueber, Schwandorf, DE;
Herman Walser, Breitenwang, AT;
Wolfram Knabl, Reutte, AT;
Gerhard Leichtfried, Reutte, AT;
Jörg Hinrich Fechner, Mainz, DE;
Franz Ott, Mitterteich, DE;
Ralf Diezel, Mitterteich, DE;
Brigitte Hueber, Schwandorf, DE;
Plansee SE, Reutte/Tirol, AT;
Schott AG, Mainz, DE;
Abstract
A cold cathode fluorescent lamp () has feedthrough pins () made from molybdenum or a molybdenum alloy that form a glass-metal seal () with a glass composed of 55-75 wt. % SiO, 13-25 wt. % BO, 0-10 wt. % AlO, 5-12 wt. % alkali oxides, 0-3 wt. % alkali earth oxides, 0-5 wt. % ZrO, 0-10 wt. % TiOund 0-5 wt. % remaining oxides. The lamp has hollow cathodes () made from a material of the group molybdenum, molybdenum alloys, niobium, niobium alloys, and the lamp is manufactured in a compact form using conventional manufacturing parameters, and the resulting lamp has crack free, long-term vacuum-tight glass-metal seals.