Patents by Inventor Günter Stephani

Günter Stephani 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).

  • Metal catalysts
    Patent number: 6747180
    Abstract: Metal catalysts comprising hollow forms or spheres are made of metal alloy and optionally activated. The metal catalysts can be used for the hydrogenation, dehydrogenation, isomerization reductive alkylation, reductive amination, and/or hydration reaction of organic compounds.
    Type: Grant
    Filed: April 17, 2003
    Date of Patent: June 8, 2004
    Assignees: Degussa AG, Fraunhofer-Gesellschaft zur Föderung der Angewandten Forschung E.V.
    Inventors: Daniel Ostgard, Peter Panster, Claus Rehren, Monika Berweiler, Günter Stephani, Lothar Schneider
  • Metal catalysts
    Publication number: 20030211938
    Abstract: Metal catalysts comprising hollow forms or spheres are made of metal alloy and optionally activated. The metal catalysts can be used for the hydrogenation, dehydrogenation, isomerization reductive alkylation, reductive amination, and/or hydration reaction of organic compounds.
    Type: Application
    Filed: April 17, 2003
    Publication date: November 13, 2003
    Inventors: Daniel Ostgard, Peter Panster, Claus Rehren, Monika Berweiler, Gunter Stephani, Lothar Schneider
  • Fixed-bed Raney-type catalysts
    Publication number: 20030120116
    Abstract: Fixed-bed Raney-type catalysts are made from metal alloy fibers and/or flakes previously fabricated according to the crucible metal extraction method and then tablated, pressed in mats and/or located into a cartridge. The catalysts are used for the hydrogenation, dehydrogenation, isomerization, reductive alkylation, reductive amination, and/or hydration of organic compounds.
    Type: Application
    Filed: December 4, 2002
    Publication date: June 26, 2003
    Inventors: Daniel Ostgard, Andreas Freund, Claus Rehren, Monika Berweiler, Gunter Stephani
  • Metal catalysts
    Patent number: 6573213
    Abstract: Metal catalysts comprising hollow forms or spheres are made of metal alloy and optionally activated. The metal catalysts can be used for the hydrogenation, dehydrogenation, isomerization reductive alkylation, reductive amination, and/or hydration reaction of organic compounds.
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: June 3, 2003
    Assignees: Degussa AG, Fraunhofer-Gesellschaft zur Forderune der Angewandten Forschung E.V.
    Inventors: Daniel Ostgard, Peter Panster, Claus Rehren, Monika Berweiler, Günter Stephani, Lothar Schneider
  • Method for the making of microcrystalline metallic materials
    Patent number: 4660622
    Abstract: Apparatus and process for the manufacturing of microcrystalline metallic materials in band form, wherein the chemical compositing for the cooling roller given in ranges within which the upper surface roughness is reduced, the geometry is improved, the presence of microcracks is eliminated or reduced and the ductibility of the band is increased.
    Type: Grant
    Filed: February 14, 1985
    Date of Patent: April 28, 1987
    Assignee: VEB Rohrkombinat, Stahl und Walzwerk, Riesa
    Inventors: Harald Reutler, Wolfgang Loser, Heinz Muhlbach, Gerhard Richter, Gunter Stephani