Patents by Inventor Juergen Chlench

Juergen Chlench 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 macrocyclic esters or lactones
    Patent number: 6140514
    Abstract: A process for the preparation of macrocyclic esters or lactones in a two-stage reaction, which entails effecting linear oligomerization of monomers having a number of carbon atoms corresponding to the macrocycle and effecting cyclizing deoligomerization, wherein both steps are conducted in the presence of a complex compound of trivalent iron.
    Type: Grant
    Filed: March 3, 1999
    Date of Patent: October 31, 2000
    Assignee: Huels Aktiengesellschaft
    Inventors: Guenther Koehler, Juergen Chlench