Patents by Inventor Herman Walser

Herman Walser has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Cold cathode fluorescent lamp with molybdenum electrode
    Patent number: 7439676
    Abstract: A cold cathode fluorescent lamp (1) has feedthrough pins (5) made from molybdenum or a molybdenum alloy that form a glass-metal seal (6) with a glass composed of 55-75 wt. % SiO2, 13-25 wt. % B2O3, 0-10 wt. % Al2O3, 5-12 wt. % alkali oxides, 0-3 wt. % alkali earth oxides, 0-5 wt. % ZrO2, 0-10 wt. % TiO2 und 0-5 wt. % remaining oxides. The lamp has hollow cathodes (4) 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.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: October 21, 2008
    Assignees: Plansee SE, Schott AG
    Inventors: Herman Walser, Wolfram Knabl, Gerhard Leichtfried, Jörg Hinrich Fechner, Franz Ott, Ralf Diezel, Brigitte Hueber
  • Cold cathode fluorescent lamp with molybdenum electrode
    Publication number: 20040239253
    Abstract: A cold cathode fluorescent lamp (1) has feedthrough pins (5) made from molybdenum or a molybdenum alloy that form a glass-metal seal (6) with a glass composed of 55-75 wt. % SiO2, 13-25 wt. % B2O3, 0-10 wt. % Al2O3, 5-12 wt. % alkali oxides, 0-3 wt. % alkali earth oxides, 0-5 wt. % ZrO2, 0-10 wt. % TiO2 und 0-5 wt. % remaining oxides. The lamp has hollow cathodes (4) 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.
    Type: Application
    Filed: May 27, 2004
    Publication date: December 2, 2004
    Applicants: Plansee Aktiengesellschaft, Schott Glas
    Inventors: Herman Walser, Wolfram Knabl, Gerhard Leichtfried, Jorg Hinrich Fechner, Franz ott, Ralf Diezel, Brigitte Hueber