Patents by Inventor Herbert Pichler

Herbert Pichler 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).

  • Method for producing a semiconductor material
    Patent number: 6309467
    Abstract: Semiconductor material has a low metal concentration at the surface. The semiconductor material has an iron content and/or chromium content on the surface of less than 6.66×10−11 g/cm2. A method for producing this semiconductor material includes a preliminary cleaning, a main cleaning and hydrophilization. A device for use in this method has a container with pyramid-shaped recesses at the bottom.
    Type: Grant
    Filed: September 15, 1998
    Date of Patent: October 30, 2001
    Assignee: Wacker-Chemie GmbH
    Inventors: Hanns Wochner, Theresia Bauer, Josef Dietl, Werner Ott, Herbert Pichler, Wilhelm Schmidbauer, Dieter Seifert, Susanne Weizbauer
  • Material comprising silicon and process for its manufacture
    Patent number: 5164138
    Abstract: A novel material can be obtained by chemical reaction from elemental or alloyed silicon powder, to which fillers are optionally added. The novel material, which can be worked mechanically, can be further refined by means of subsequent heat treatment and/or surface coating, and can in many cases be used instead of polycrystalline or sintered silicon.
    Type: Grant
    Filed: September 7, 1990
    Date of Patent: November 17, 1992
    Assignee: Heliotronic Forschungs- und Entwicklungsgesellschaft fur Solarzellen-Grundstoffe mbH
    Inventors: Josef Dietl, Erhard Sirtl, Rolf Bauregger, Erich Bildl, Rudolf Rothlehner, Dieter Seifert, Hermann Dicker, Herbert Pichler