Patents by Inventor Kurt Scheinost

Kurt Scheinost 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).

  • Process for the production of cyanamide
    Patent number: 5166432
    Abstract: The present invention provides a process for the production of cyanamide from urea and/or decomposition products thereof at an elevated temperature with the use of a microporous catalyst, wherein, as catalyst, there is used a zeolite and/or a silicoalumophosphate which is doped with transition metal cations selected from the Group IB and VIIB of the Periodic System. In this way, it is possible to increase the conversion, referred to urea, to 60 to 100%, the selectivity with regard to cyanamide thereby being from about 30 to 50% and with regard to the undesired melamine being .ltoreq.2%.
    Type: Grant
    Filed: August 20, 1991
    Date of Patent: November 24, 1992
    Assignee: SKW Trostberg Aktiengesellshaft
    Inventors: Jens Weitkamp, Stefan Ernst, Heinrich Rock, Kurt Scheinost, Benedikt Hammer, Werner Goll, Horst Michaud
  • Process for the production of guanidine nitrate from urea and ammonium nitrate
    Patent number: 5041662
    Abstract: The present invention provides a process for the production of guanidine nitrate by the reaction of urea and excess ammonium nitrate in the presence of a silicon dioxide catalyst at an elevated temperature, wherein the molten reaction mixture containing the dispersed catalyst is passed in a cycle, a branch current of the reaction mixture is continuously separated off by filtration in such a manner that the catalyst remains in circulation and consumed urea and ammonium nitrate are supplemented corresponding to the removal of the product.
    Type: Grant
    Filed: March 2, 1990
    Date of Patent: August 20, 1991
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventors: Clemens Grambow, Wolfgang Kristof, Peter Reitsamer, Kurt Scheinost
  • Process for production of cyanogen chloride
    Patent number: 4242319
    Abstract: Process for producing cyanogen chloride by reacting hydrocyanic acid and chlorine in a non-aqueous and/or hygroscopic inorganic solvent.
    Type: Grant
    Filed: August 9, 1979
    Date of Patent: December 30, 1980
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventors: Georg Buchreiter, Peter Kniep, Kurt Scheinost, Heinz-Rudiger Vollbrecht