Patents by Inventor Irene Trötsch-Schaller

Irene Trötsch-Schaller 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).

  • Preparation of alkyl, alkenyl, and alkynyl chlorides
    Patent number: 5196611
    Abstract: The preparation of an alkyl, alkenyl, or alkynyl chloride by the reaction of a corresponding alcohol with phosgene or thionyl chloride in the presence of a phosphine oxide acting as catalyst, wherein the catalyst used is an aliphatic, cycloaliphatic, or cyclic/aliphatic phosphine oxide.
    Type: Grant
    Filed: May 6, 1992
    Date of Patent: March 23, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Jochem Henkelmann, Irene Troetsch-Schaller, Thomas Wettling, Thomas-Michael Kahl, Leopold Hupfer, Wolfgang Franzischka, Hermann Koehler