Patents by Inventor Oliver Lütkemeier

Oliver Lütkemeier 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).

  • Method of making a hardened sheet metal part
    Patent number: 8756969
    Abstract: In a method of making a hardened sheet metal part, a blank is cut to form a region defined by at least one cutting edge having a cutting depth which is smaller than a material thickness of the blank. The blank is subjected to a hot forming step and at least in one area is allowed to harden. After the hot forming step, the region is pushed along the cutting edge.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: June 24, 2014
    Assignee: Benteler Automobiltechnik GmbH
    Inventors: Stefan Gosmann, Josef Köster, Oliver Lütkemeier