Patents by Inventor Jurgen Olbrich

Jurgen Olbrich 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 reacting maleic anhydride with vinylbenzenes
    Patent number: 4614808
    Abstract: The reaction of maleic anhydride with vinylbenzene to form tetralin dianhydride is improved by conducting, per mole of vinyl group, 2-20 l/h of air (measured under normal conditions: 20.degree. C./l bar) through the reaction mixture.
    Type: Grant
    Filed: September 27, 1985
    Date of Patent: September 30, 1986
    Assignee: Huels Aktiengesellschaft
    Inventors: Jurgen Olbrich, Jorg Dorffel