Patents by Inventor H. J. Langer

H. J. Langer 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).

  • Device for adding additives to liquid fuels
    Patent number: 5456217
    Abstract: A device for direct addition of solid additives to fuels for internal combustion engines. In order to ensure a concentration of the solid additive in the fuel which is as constant as possible, the device has a cartridge at least partially filled with the solid additives and at least partially permeable to the fuel. The cartridge is located in a portion of the filling neck of a fuel tank.
    Type: Grant
    Filed: July 18, 1994
    Date of Patent: October 10, 1995
    Assignee: Chemische Betriebe Pluto GmbH
    Inventors: Walter Thunker, Gabriele Lohmann, Arnim Marschewski, H. J. Langer, Roland Schulte