Patents by Inventor Heinz-Josef Berns

Heinz-Josef Berns 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).

  • Production of 2-chlorobutadiene-1,3
    Patent number: 3978146
    Abstract: Production of 2-chlorobutadiene-(1,3) by the dehydrochlorination of 3,4-dichlorobutene-(1) in an aqueous solution of an alkali metal or alkaline earth metal hydroxide in the presence of an alcohol having between 2 and 4 carbon atoms at elevated temperature, and distilling off resulting 2-chlorobutadiene-(1,3).
    Type: Grant
    Filed: February 10, 1975
    Date of Patent: August 31, 1976
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Alexander Ohorodnik, Udo Dettmeier, Klaus Gehrmann, Heinz-Josef Berns