Patents by Inventor Hans Hovenkamp

Hans Hovenkamp 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 a mixture of alkyl pentenoates
    Patent number: 5693851
    Abstract: Process for the preparation of a mixture of alkyl pentenoates by carbonylation of butadiene in the liquid phase in the presence of an alkanol, carbon monoxide, palladium and a bidentate organic phosphorus, antimony or arsenic ligand, the bidentate ligand having as bridging group a bis(.eta.-cyclopentadienyl) coordination group of a transition metal. Preferably the transition metal is iron.
    Type: Grant
    Filed: February 2, 1996
    Date of Patent: December 2, 1997
    Assignees: DSM N.V., E. I. Du Pont de Nemours and Company
    Inventors: Otto E. Sielcken, Hans Hovenkamp