Patents by Inventor Ralf Berelsmann

Ralf Berelsmann 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: 7798722
    Abstract: Round bearings comprise (i) an outer bush, (ii) a bearing element based on polyisocyanate polyadducts and (iii) a hollow inner bush. A surface of the outer bush and/or the hollow inner bush that is adjacent to (ii) the bearing element containing thermoplastic polyurethane.
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: September 21, 2010
    Assignee: BASF Aktiengesellschaft
    Inventors: Andreas Wulf, Ralf Berelsmann
  • Publication number: 20050207685
    Abstract: A round bearing including (i) an outer bush, (ii) a bearing element based on polyisocyanate polyadducts, and (iii) a hollow inner bush. A surface of the outer bush and/or the hollow inner bush that is adjacent to the bearing element contain thermoplastic polyurethane.
    Type: Application
    Filed: June 4, 2003
    Publication date: September 22, 2005
    Inventors: Andreas Wulf, Ralf Berelsmann