Patents by Inventor Paul Guempel

Paul Guempel 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: 8845957
    Abstract: A method for producing a magnetizable metal shaped body comprising a ferromagnetic starting material that is present in powder and in particulate form, using the following steps: (a) first compaction of the starting material (S3) such that adjoining particles become bonded to each other by means of positive adhesion and/or integral bonding in sections along the peripheral surfaces thereof and while forming hollow spaces, (b) creating an electrically isolating surface coating on the peripheral surfaces of the particles in regions outside the joining sections (S4), and (c) second compaction of the particles (S5) provided with the surface coating, such that the hollow spaces are reduced in size or eliminated.
    Type: Grant
    Filed: April 27, 2009
    Date of Patent: September 30, 2014
    Assignees: ETO Magnetic GmbH, Kennametal Europe GmbH
    Inventors: Paul Guempel, Stefan Glaeser, Beat Hofer
  • Publication number: 20110058976
    Abstract: A method for producing a magnetizable metal shaped body comprising a ferromagnetic starting material that is present in powder and in particulate form, using the following steps: (a) first compaction of the starting material (S3) such that adjoining particles become bonded to each other by means of positive adhesion and/or integral bonding in sections along the peripheral surfaces thereof and while forming hollow spaces, (b) creating an electrically isolating surface coating on the peripheral surfaces of the particles in regions outside the joining sections (S4), and (c) second compaction of the particles (S5) provided with the surface coating, such that the hollow spaces are reduced in size or eliminated.
    Type: Application
    Filed: April 27, 2009
    Publication date: March 10, 2011
    Inventors: Paul Guempel, Stefan Glaeser, Beat Hofer