Patents by Inventor Kurt-Wilheim Eichenhofer

Kurt-Wilheim Eichenhofer 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 ketazines
    Patent number: 3933910
    Abstract: A process for the production of ketazine corresponding to the general formula ##EQU1## in which: R.sub.1 and R.sub.2 are independently linear or branched alkyl radicals of from 1 to 8 carbon atoms or a phenyl radical, or taken together with the carbon atom to which they are attached represent a carbocyclic ring with 5 to 8 carbon atoms or a cyclic alkyl radical with 5 to 8 carbon atoms, comprising reacting ammonia, hydrogen peroxide and a ketone of the general formulaR.sub.1 - CO - R.sub.2in which R.sub.1 and R.sub.2 are as defined above, in the presence of hydrocyanic acid.
    Type: Grant
    Filed: May 14, 1974
    Date of Patent: January 20, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Helmut Waldmann, Hermann Seifer, Wulf Schwerdtel, Wolfgang Swodenk, Kurt-Wilheim Eichenhofer