Patents by Inventor Jörg Krissmann

Jörg Krissmann 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 for producing 1-octene from crack-C
    Patent number: 7368621
    Abstract: The invention relates to a process for preparing 1-octene from a C4 fraction from a cracker by telomerization of the 1,3-butadiene present in the C4 fraction from a cracker by means of methanol in the presence of a catalyst, hydrogenation of the telomer obtained in this way, dissociation of the hydrogenated telomer and work-up of the resulting dissociation product to give pure 1-octene.
    Type: Grant
    Filed: May 6, 2004
    Date of Patent: May 6, 2008
    Assignee: OXENO Olefinchemie GmbH
    Inventors: Joerg Krissmann, Dirk Roettger, Cornelia Borgmann, Kerstin Kaemper, Franz Nierlich, Alfred Kaizik, Udo Knippenberg, Rainer Malzkorn
  • Method for separation of substances by extraction or by washing them with ionic liquids
    Patent number: 7304200
    Abstract: The present invention relates to a process for the liquid-liquid extraction or liquid-gas extraction of mixtures of organic compounds, in which one or more components of the mixture are completely or partly extracted by means of a phase comprising at least one ionic liquid.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: December 4, 2007
    Assignee: OXENO Olefinchemie GmbH
    Inventors: Dirk Roettger, Franz Nierlich, Joerg Krissmann, Peter Wasserscheid, Wilhelm Keim
  • Work-up of the ammoximation products of ketones by liquid-liquid extraction in a ternary solvent system
    Patent number: 6620970
    Abstract: The present invention relates to a process for working up an ammoximation reaction mixture, by separating a catalyst from the reaction mixture, removing the ketone oxime product, discharging the water of the reaction, and recirculating a solvent, where the ketone oxime formed is removed in a liquid phase with at least one liquid-liquid extraction in a ternary solvent system.
    Type: Grant
    Filed: September 3, 2002
    Date of Patent: September 16, 2003
    Assignee: Degussa AG
    Inventors: Thomas Schiffer, Peter Ernst Esser, Jörg Krissmann, Martin Roos, Günter Stevermüer, Georg Friedrich Thiele
  • Process and apparatus for separating foreign hydrogen halides from a stream of hydrogen chloride by means of absorption
    Publication number: 20030019360
    Abstract: Hydrogen chloride gas contaminated with foreign hydrogen halides may be purified by a process comprising selectively absorbing the foreign hydrogen halide in an absorption medium, preferably water or an aqueous hydrogen chloride solution. To minimize the mass flow of the foreign hydrogen halide loaded absorption medium which is discharged from the process, the absorption medium is preferably conveyed countercurrent to the gas in at least two coupled circuits in the absorber.
    Type: Application
    Filed: June 26, 2002
    Publication date: January 30, 2003
    Applicant: DEGUSSA AG
    Inventors: Joerg Krissmann, John Kahsnitz, Rudolf Burghardt