Patents by Inventor Harald Siegele

Harald Siegele 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 copper alloy and a method of manufacture
    Publication number: 20040241038
    Abstract: A lead-free copper alloy on the base of Cu—Zn—Sn and a method of manufacture. The copper alloy is built on the base of copper, zinc and tin without toxic additives and consists of: 60 to 70% Cu, 0.5 to 3.5% Sn and the further matrix-active elements: 0.01 to 0.5% Fe and/or Co, 0.01 to 0.5% Ni, 0.01 to 0.5% Mn and/or Si, the remainder Zn and unavoidable impurities. Selectively up to 3% Mg, up to 0.2% P and up to 0.5% Ag, Al, As, Sb, Ti, Zr can be added. The demands for a health-conscious and ecological compatibility are thus naturally met.
    Type: Application
    Filed: February 25, 2004
    Publication date: December 2, 2004
    Inventors: Uwe Hofmann, Monika Breu, Harald Siegele, Andreas Boegel, Doris Humpenoeder-Boegel, Joerg Seeger
  • Copper-zinc-alloy for use in drinking-water installations
    Patent number: 5766377
    Abstract: A drinking water installation is made up of a source of drinking water and equipment for delivering the drinking water. In the equipment for delivering drinking water, a copper-zinc alloy which does not contain lead or bismuth is used. This alloy has a copper to zinc ratio of from 1.3 to 2.0 and contains at least one additive for improving the properties of the alloy. This alloy possesses superior machinability properties and yet does not pose the potential toxic hazard that lead- or bismuth-containing alloys do.
    Type: Grant
    Filed: September 16, 1996
    Date of Patent: June 16, 1998
    Assignee: Wieland-Werke AG
    Inventors: Gert Mueller, Harald Siegele, Michael Bohsmann