Patents by Inventor Martina Heinau

Martina Heinau 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).

  • Patent number: 5945080
    Abstract: A catalyst and a process for producing the catalyst are provided. For the catalytic reduction of NO.sub.x and for the oxidation of hydrocarbons, the catalyst contains a spinel containing the metals copper, zinc and aluminum.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: August 31, 1999
    Assignees: Daimler-Benz AG, BASF Aktiengesellschaft
    Inventors: Martin Hartweg, Martina Heinau, Andrea Seibold, Leonhard Walz, Thomas Fetzer, Bernd Morsbach, Wolfgang Buechele
  • Patent number: 5851501
    Abstract: A material and a process for adsorbing and desorbing nitrogen oxides in exhaust gas systems of engines running on a lean mixture, which does not require a prior oxidation step, wherein a mixed oxide which has an oxygen-rich orthorhombic structure is used which changes to an oxygen-poor tetragonal structure as a function of temperature.
    Type: Grant
    Filed: May 9, 1996
    Date of Patent: December 22, 1998
    Assignee: Daimler-Benz AG
    Inventors: Bernd Krutzsch, Andrea Seibold, Leonhard Walz, Walter Boegner, Martina Heinau, Martin Hartweg, Brigitte Konrad
  • Patent number: 5750460
    Abstract: A catalyst and a process for producing the catalyst are provided. For the catalytic reduction of NO.sub.x and for the oxidation of hydrocarbons, the catalyst contains a spinel containing the metals copper, zinc and aluminum.
    Type: Grant
    Filed: June 16, 1995
    Date of Patent: May 12, 1998
    Assignees: Daimler-Benz AG, BASF Aktiengesellschaft
    Inventors: Martin Hartweg, Martina Heinau, Andrea Seibold, Leonhard Walz, Thomas Fetzer, Bernd Morsbach, Wolfgang Buechele
  • Patent number: 5580534
    Abstract: The invention provides a catalyst, and a process for preparing the same, for the catalytic reduction of NO.sub.x and for the oxidation of hydrocarbons. The catalyst contains a copper oxide-zinc oxide-aluminum oxide spinel and a zeolitic support material.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: December 3, 1996
    Assignee: Daimler-Benz AG
    Inventors: Martin Hartweg, Martina Heinau, Andrea Seibold, Leonhard Walz