Patents by Inventor Thomas-Jorn Schulz

Thomas-Jorn Schulz 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 preparation of chlorine-substituted aromatic amines and of catalysts
    Patent number: 5410085
    Abstract: Chlorine-substituted aromatic amines are prepared by the hydrogenation of chlorine-substituted aromatic nitro compounds in the presence of a catalyst containing platinum and nickel and/or cobalt on an activated charcoal support, the platinum having been simultaneously deposited and reduced on the activated charcoal support in the preparation of the catalyst. Such catalysts are furthermore prepared, as are catalysts containing noble metals on an activated charcoal support, it also being possible for the latter to be used for the reduction of nitronaphthalenes or nitrotoluenes.
    Type: Grant
    Filed: October 20, 1993
    Date of Patent: April 25, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventors: Udo Birkenstock, Walter Kipshagen, Herbert Schmidt, Thomas-Jorn Schulz, Eberhard Zirngiebl