Patents by Inventor Matthias Knüwer

Matthias Knüwer 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: 6858060
    Abstract: The invention relates to a process for the production of metallic and metal-ceramic composite components by powder injection molding of a system comprising a metal composite powder, a binder and optionally a ceramic component, where the metal composite powder used is mixed with a protecting liquid in an inert atmosphere before the mixing with the binder. The invention furthermore relates to molybdenum/copper and tungsten/copper composite powders which have a primary metal particle size of predominantly <2 ?m, an oxygen content of <0.8% by weight and optionally a ceramic component, to the use of these composite powders for the production of composite components by powder injection molding, and to a process for the preparation of composite powders in which oxides of molybdenum or tungsten and of copper are mixed, dry-ground and reduced using hydrogen at a temperature of from 800 to 1050° C., and a ceramic component is optionally admixed with the resultant metal composite powder.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: February 22, 2005
    Assignee: H. C. Starck GmbH & Co. KG
    Inventors: Helmut Meinhardt, Bernd Meyer, Matthias Knüwer, Dietmar Fister, Wolfgang Wiezoreck
  • Patent number: 6562290
    Abstract: The invention relates to a process for the production of metallic and metal-ceramic composite components by powder injection molding of a system comprising a metal composite powder, a binder and optionally a ceramic component, where the metal composite powder used is mixed with a protecting liquid in an inert atmosphere before the mixing with the binder. The invention furthermore relates to molybdenum/copper and tungsten/copper composite powders which have a primary metal particle size of predominantly <2 &mgr;m, an oxygen content of <0.8% by weight and optionally a ceramic component, to the use of these composite powders for the production of composite components by powder injection molding, and to a process for the preparation of composite powders in which oxides of molybdenum or tungsten and of copper are mixed, dry-ground and reduced using hydrogen at a temperature of from 800 to 1050° C., and a ceramic component is optionally admixed with the resultant metal composite powder.
    Type: Grant
    Filed: August 20, 2001
    Date of Patent: May 13, 2003
    Assignee: H.C. Starck Inc.
    Inventors: Helmut Meinhardt, Bernd Meyer, Matthias Knüwer, Dietmar Fister, Wolfgang Wiezoreck