Patents by Inventor Christian Fiedler

Christian Fiedler 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).

  • Hydrogenation of unsaturated polymers containing nitrile groups
    Patent number: 5034469
    Abstract: Hydrogenation products of olefinically unsaturated polymers having nitrile groups prepared in the presence of ruthenium catalysts in a solvent comprising a low-molecular ketone and a secondary or tertiary C.sub.3 -C.sub.6 -alcohol by hydrogenation, can be processed to vulcanizates with improved compression set values.
    Type: Grant
    Filed: June 18, 1990
    Date of Patent: July 23, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hartmuth Buding, Joachim Thormer, Wilfried Nolte, Johann Hohn, Paul-Christian Fiedler, Thomas Himmler
  • Fuel cooling device
    Patent number: 4898141
    Abstract: A fuel cooling device has a cylindrical housing (1), in which a tube (8) for the refrigerant is mounted. This refrigerant tube 8 is surrounded by a spirally wound fuel tube. The tube (8) for the refrigerant has openings for penetration of the refrigerant into the inner part (2) of the housing (1). The spirally wound fuel tube assembly is constructed as a continuous tube assembly (14), which is also mainly located in the inner part (2) of the housing (1) and is led out of the housing (1) by its connecting ends.
    Type: Grant
    Filed: April 8, 1988
    Date of Patent: February 6, 1990
    Assignee: Aeroquip GmbH
    Inventor: Christian Fiedler