Patents by Inventor Michael Teichgraeber

Michael Teichgraeber 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).

  • Open-cell expanded ceramic with a high level of strength, and process for the production thereof
    Patent number: 6635339
    Abstract: The disclosed invention relates to the field of ceramics and concerns an open-cell expanded ceramic which may be used in the form of a deep-bed filter, and a process for the production thereof. The primary object is to produce an open-cell expanded ceramic by a simple and economical process. This object is attained by an open-cell expanded ceramic in which the inner cavities, cracks and the porosity of the ceramic members are filled partially or completely by one or a plurality of metal and/or ceramic phases and/or glass phases. The open-cell expanded ceramic is also produced in that during or after sintering the cavities, cracks and the porosity of the ceramic members are partially or completely filled with a melt or a suspension which melt below the melting temperature of the expanded ceramic, have a coefficient of expansion similar to the coefficient of expansion of the expanded ceramic, and a very good wetting capacity, and only react partially or not at all with constituents of the expanded ceramic.
    Type: Grant
    Filed: May 24, 1999
    Date of Patent: October 21, 2003
    Assignee: Frauhofer-Gesellschaft zur Forderung der Angewandten Forschung E V
    Inventors: Joerg Adler, Michael Teichgraeber, Gisela Standke, Helmut Jaunich, Heike Stoever, Reinhard Stoetzel