Patents by Inventor Heinz-Jochen Keller

Heinz-Jochen Keller 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: 6193941
    Abstract: Besides a synthesis gas, a metallurgical raw material is to be produced from an oil containing heavy metals. To do this, the oil is partially oxidized and the heavy metal-containing soot is separated and burnt and the heavy metals thus occurring as ash can be taken to further processing, e.g. washing from the synthesis gas produced, using an aqueous washing solution.
    Type: Grant
    Filed: December 1, 1998
    Date of Patent: February 27, 2001
    Assignee: Krupp Uhde GmbH
    Inventors: Michael Buxel, Heinz Jochen Keller
  • Patent number: 4078899
    Abstract: A reaction vessel for heating by helium under pressure comprising an upright container provided with an upper part and with a lower part constituting a heating space. In the lower container part are vertically spaced inlet and outlet openings for heated helium under pressure. The upper container part has spaced walls providing a space therebetween and two covers. The upper end of the lower container part is closed and catalyst-filled reaction tubes pass through such closure into the heating space. Inlet and outlet pipes for the reaction tubes extend in coaxial manner from the reaction tubes head through the inner wall of the upper reactor part below the cover of such inner wall, and thence through the space between the inner and outer walls and finally to the outside through the outer wall of the upper part below the cover for the outer wall. The length of the inlet and outlet pipes inside the space is more than the distance of the walls, and the coaxial pipes may be disposed in serpentine fashion.
    Type: Grant
    Filed: September 20, 1976
    Date of Patent: March 14, 1978
    Assignee: Friedrich Uhde GmbH
    Inventors: Heinz-Jochen Keller, Hans-Dieter Marsch, Herbert Biskup
  • Patent number: 3946104
    Abstract: A method for the production of a homogenous gas mixture from two gas streams of different parameters in which an open or free equalizing space downstream of a superimposed catalyst layer is provided. Within such open space is a mixing assembly imposing a little deflection upon the reaction gas stream causing a low pressure drop in the stream with a consequent reduced loss of energy. Quench gas is admitted through a two stage pressure reduction. It is first expanded from a duct surrounding the mixing assembly through a plurality of openings where the gas velocities are reduced and equalized. The second pressure reduction takes place across openings in the mixing assembly. Quench gas and reaction gas are then thoroughly mixed in the mixing assembly and the gas mixture is consequently passed to the entrance of a second catalyst layer downstream.
    Type: Grant
    Filed: July 8, 1974
    Date of Patent: March 23, 1976
    Assignee: Friedrich Uhde GmbH
    Inventors: Friedrich Forster, Erich Barth, Heinz-Jochen Keller