Patents by Inventor Ralf Diezel

Ralf Diezel 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).

  • UV-blocking borosilicate glass, the use of the same, and a fluorescent lamp
    Patent number: 7517822
    Abstract: The invention relates to a borosilicate glass having the following composition (in wt. % based on oxide content): between 55 and 80 of SiO2; between 8 and 25 of B2O3; between 0.5 and 10 of Al2O3; between 1 and 16 of Li2O+Na2O+K2O; between 0 and 6 of MgO+CaO+SrO+BaO; between 0 and 3 of ZnO; between 0 and 5 of ZrO2; between 0 and 5 of Bi2O3; and between 0 and 3 of MoO3; the sum of the Bi2O3 and MoO3 amounting to between 0.01 and 5. The invention also relates to a fluorescent lamp, especially a miniature fluorescent lamp.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: April 14, 2009
    Assignee: Schott AG
    Inventors: Joerg Fechner, Franz Ott, Rainer Haspel, Ralf Diezel
  • 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
  • Process for producing alkali-free aluminosilicate glass
    Patent number: 7137278
    Abstract: The process of the invention produces alkali-free aluminosilicate glass having an Al2O3-content of more than 12% by weight with the addition of from 0.005% by weight to 0.6% by weight of sulfate for batch formulation.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: November 21, 2006
    Assignee: Schott AG
    Inventors: Franz Ott, Karin Naumann, Otmar Becker, Ralf Diezel
  • Method for producing aluminosilicate glass
    Patent number: 6992031
    Abstract: The invention relates to a method for producing aluminosilicate glass that is devoid of alkali and that has a B2O3 content of between 0 and <5 wt.-% and a BaO content in excess of 5.5 wt.-%. Said method is characterised by the addition of between 0.05 wt.-% and 1.0 wt.-% SnO2 during the preparation of the mixture.
    Type: Grant
    Filed: July 12, 2001
    Date of Patent: January 31, 2006
    Assignee: Schott Glas
    Inventors: Karin Naumann, Franz Ott, Ralf Diezel, Otmar Becker
  • Uv-blocking borosilicate glass, the use of the same, and a fluorescent lamp
    Publication number: 20050151116
    Abstract: The invention relates to a borosilicate glass having the following composition (in wt. % based on oxide content): between 55 and 80 of SiO2; between 8 and 25 of B2O3; between 0.5 and 10 of Al2O3; between 1 and 16 of Li2O+Na2O+K2O; between 0 and 6 of MgO+CaO+SrO+BaO; between 0 and 3 of ZnO; between 0 and 5 of ZrO2; between 0 and 5 of Bi2O3; and between 0 and 3 of MoO3; the sum of the Bi2O3 and MoO3 amounting to between 0.01 and 5. The invention also relates to a fluorescent lamp, especially a miniature fluorescent lamp.
    Type: Application
    Filed: March 26, 2003
    Publication date: July 14, 2005
    Applicant: SCHOTT AG
    Inventors: Joerg Fechner, Franz Ott, Rainer Haspel, Ralf Diezel
  • 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
  • Method for producing aluminosilicate glass
    Publication number: 20040029702
    Abstract: The invention relates to a method for producing aluminosilicate glass that is devoid of alkali and that has a B2O3 content of between 0 and <5 wt.-% and a BaO content in excess of 5.5 wt.-%. Said method is characterised by the addition of between 0.05 wt.-% and 1.0 wt.-% SnO2 during the preparation of the mixture.
    Type: Application
    Filed: August 8, 2003
    Publication date: February 12, 2004
    Inventors: Karin Naumann, Franz Ott, Ralf Diezel, Otmar Becker
  • Process for producing alkali-free aluminosilicate glass
    Publication number: 20040018934
    Abstract: The process of the invention produces alkali-free aluminosilicate glass having an Al2O3-content of more than 12% by weight with the addition of from 0.005% by weight to 0.6% by weight of sulfate for batch formulation.
    Type: Application
    Filed: March 25, 2003
    Publication date: January 29, 2004
    Inventors: Franz Ott, Karin Naumann, Otmar Becker, Ralf Diezel