Patents by Inventor Rolf Schalenbach

Rolf Schalenbach 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 1-butene-3,4-diol
    Patent number: 4661646
    Abstract: 1-Butene-3,4-diol is prepared by heat treatment of 2-butene-1,4-diol in the presence of catalytically active substances under acid conditions.
    Type: Grant
    Filed: November 21, 1985
    Date of Patent: April 28, 1987
    Assignee: Bayer Aktiengesellschaft
    Inventors: Rolf Schalenbach, Helmut Waldmann