Patents by Inventor Gert Randau

Gert Randau 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 4-amino-3-methyl-phenol
    Patent number: 4496764
    Abstract: A process for the preparation of 4-amino-3-methyl-phenol from 4-nitroso-3-methyl-phenol, which comprises contacting said 4-nitroso-3-methyl-phenol with iron in an acid aqueous medium at a temperature of 20.degree. to 100.degree. C. said medium having pH in the range from 2 to 6.5.
    Type: Grant
    Filed: January 14, 1983
    Date of Patent: January 29, 1985
    Assignee: Bayer Aktiengesellschaft
    Inventors: Guido Skipka, Hans-Ulrich Alles, Gert Randau, Manfred Niese