Patents by Inventor Leendert Hendrick De Graaff

Leendert Hendrick De Graaff 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).

  • Cloning and expression of DNA molecules encoding arabinan-degrading enzymes of fungal origin
    Patent number: 5863783
    Abstract: The present invention provides the cloning and expression of purified and isolated DNA molecules, obtainable from fungi, which encode enzymes having arabinan-degrading activity. The present invention also provides DNA constructs containing these DNA molecules and methods for their enhanced expression in selected microbial host cells. The present invention further provides methods for the use of the thus-produced arabinan-degrading enzymes.
    Type: Grant
    Filed: November 25, 1992
    Date of Patent: January 26, 1999
    Assignee: Gist-brocades, N.V.
    Inventors: Margaretha Van Heuvel, Janna Gardina Bakhuis, Yves Coutel, Abraham Harder, Leendert Hendrick De Graaff, Michel Johannes Anthonie Flipphi, Peter Van Der Veen, Jacob Visser, Peter Michael Andreoli