Patents by Inventor Helmar Vetter

Helmar Vetter 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).

  • Lead-free glass tubing, especially for encapsulating diodes and diodes encapsulated with same
    Patent number: 7102242
    Abstract: The lead-free glass tubing of the SiO2—B2O3—R2O—BaO—ZnO—TiO2 system has a composition, in percent by weight on an oxide basis, consisting essentially of: SiO2, 34 to 52; B2O3, 10 to 25; Al2O3, 0 to 25; Li2O, 2 to 6; Na2O, 4 to 10; K2O, 2 to 6; CaO, 0 to 4; BaO, 1 to 5; ZnO, 4 to 12; TiO2, 2 to 6, and at least one refining agent in an effective amount for refining. An encapsulated diode consisting of a diode encapsulated with this lead-free glass tubing is also disclosed.
    Type: Grant
    Filed: January 18, 2005
    Date of Patent: September 5, 2006
    Assignee: Schott AG
    Inventors: Peter Brix, Helmar Vetter, Oliver Fritz
  • Lead-free glass tubing, especially for encapsulating diodes and diodes encapsulated with same
    Publication number: 20050130826
    Abstract: The lead-free glass tubing of the SiO2—B2O3—R2O—BaO—ZnO—TiO2 system has a composition, in percent by weight on an oxide basis, consisting essentially of: SiO2, 34 to 52; B2O3, 10 to 25; Al2O3, 0 to 25; Li2O, 2 to 6; Na2O, 4 to 10; K2O, 2 to 6; CaO, 0 to 4; BaO, 1 to 5; ZnO, 4 to 12; TiO2, 2 to 6, and at least one refining agent in an effective amount for refining. An encapsulated diode consisting of a diode encapsulated with this lead-free glass tubing is also disclosed.
    Type: Application
    Filed: January 18, 2005
    Publication date: June 16, 2005
    Inventors: Peter Brix, Helmar Vetter, Oliver Fritz
  • Lead-free glass tubing, especially for encapsulating diodes and diodes encapsulated with same
    Patent number: 6864197
    Abstract: The lead-free glass tubing of the SiO2—B2O3—R2O—BaO—ZnO—TiO2 system has a composition, in percent by weight on an oxide basis, consisting essentially of: SiO2, 34 to 52; B2O3, 10 to 25; Al2O3, 0 to 25; Li2O, 2 to 6; Na2O, 4 to 10; K2O, 2 to 6; CaO, 0 to 4; BaO, 1 to 5; ZnO, 4 to 12; TiO2, 2 to 6, and at least one refining agent in an effective amount for refining. An encapsulated diode consisting of a diode encapsulated with this lead-free glass tubing is also disclosed.
    Type: Grant
    Filed: October 10, 2002
    Date of Patent: March 8, 2005
    Assignee: Schott Glas
    Inventors: Peter Brix, Helmar Vetter, Oliver Fritz
  • Lead-free glass tubing, especially for encapsulating diodes and diodes encapsulated with same
    Publication number: 20030078154
    Abstract: The lead-free glass tubing of the SiO2—B2O3—R2O—BaO—ZnO—TiO2 system has a composition, in percent by weight on an oxide basis, consisting essentially of: SiO2, 34 to 52; B2O3, 10 to 25; Al2O3, 0 to 25; Li2O, 2 to 6; Na2O, 4 to 10; K2O, 2 to 6; CaO, 0 to 4; BaO, 1 to 5; ZnO, 4 to 12; TiO2, 2 to 6, and at least one refining agent in an effective amount for refining. An encapsulated diode consisting of a diode encapsulated with this lead-free glass tubing is also disclosed.
    Type: Application
    Filed: October 10, 2002
    Publication date: April 24, 2003
    Inventors: Peter Brix, Helmar Vetter, Oliver Fritz