Patents by Inventor Hans Thies

Hans Thies 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 aryl thiols
    Patent number: 4209469
    Abstract: A process for the production of an aryl thiol, which comprises hydrogenating an aryl sulfochloride in a protic or aprotic solvent in the presence of platinum as catalyst, at a temperature between 100.degree. and 180.degree. C., with hydrogen under a pressure of 2 to 140 bar, in a single reaction step.
    Type: Grant
    Filed: December 19, 1978
    Date of Patent: June 24, 1980
    Assignee: Ciba-Geigy AG
    Inventors: Hans Thies, Fred von Kaenel