Patents Assigned to NH Technoglass Co.
  • Lining material for glass melting furnaces, glass melting furnaces, process for producing glass products, and process for purifying the lining material
    Patent number: 6589475
    Abstract: A lining material for glass melting furnaces comprises platinum or platinum alloy as a base material containing osmium as an impurity in an amount no more than 20 ppm. The lining material is used for that part of the melting furnace which comes into contact with molten glass. The low osmium content prevents the formation of bubbles in molten glass, thereby providing high-quality glass products.
    Type: Grant
    Filed: March 20, 2002
    Date of Patent: July 8, 2003
    Assignee: NH Technoglass Co.
    Inventors: Tsugunobu Murakami, Tadakazu Hidai
  • Lining materials for glass melting furnaces
    Publication number: 20020174688
    Abstract: A lining material for glass melting furnaces comprises platinum or platinum alloy as a base material containing osmium as an impurity in an amount no more than 20 ppm. The lining material is used for that part of the melting furnace which comes into contact with molten glass. The low osmium content prevents the formation of bubbles in molten glass, thereby providing high-quality glass products.
    Type: Application
    Filed: March 20, 2002
    Publication date: November 28, 2002
    Applicant: NH Technoglass Co.
    Inventors: Tsugunobu Murakami, Tadakazu Hidai
  • Lining material for glass melting furnaces, glass melting furnaces, process for producing glass products, and process for purifying the lining material
    Patent number: 6250111
    Abstract: A lining material for glass melting furnaces comprises platinum or platinum alloy as a base material containing osmium as an impurity in an amount no more than 20 ppm. The lining material is used for that part of the melting furnace which comes into contact with molten glass. The low osmium content prevents the formation of bubbles in molten glass, thereby providing high-quality glass products.
    Type: Grant
    Filed: December 1, 1998
    Date of Patent: June 26, 2001
    Assignee: NH Technoglass Co.
    Inventors: Tsugunobu Murakami, Tadakazu Hidai