Patents by Inventor Margareta Adriana Herweijer

Margareta Adriana Herweijer 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).

  • Aspergillus tubigensis polygalacturonase
    Patent number: 6602696
    Abstract: The present invention relates to a DNA sequence obtainable from Aspergillus tubigensis which encodes a polygalacturonase. It also relates to vectors comprising the DNA sequence and to host cells transformed with such vectors. The invention further relates to the expression of the polygalacturonase and its use.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: August 5, 2003
    Assignee: DSM N. V.
    Inventors: Maartje Maria Franse, Catherine Marie Therese Grassin, Margareta Adriana Herweijer, Petrus Johannes Albertus Meeuwsen, Albert Johannes Joseph Van Ooijen, Alphons Gerard Joseph Voragen
  • Thermostable xylanases
    Patent number: 6083733
    Abstract: The present invention discloses enzymes having xylanase activity. The xylanases are characterized in that they are active at a temperature of 80.degree. C. or higher. The enzymes are obtainable from anaerobic thermophilic bacteria. The enzymes are suited for use in paper and pulp production processes. The invention also describes cloning and expression of genes having xylanase activity obtained from the deposited strains.
    Type: Grant
    Filed: February 5, 1997
    Date of Patent: July 4, 2000
    Assignee: Gist-brocades B.V.
    Inventors: Vidar Gronberg, Simon Forster, Dean Moody, Diane P. Williams, Sara Iverson, Roberta Lee Farrell, Peter Leonard Bergquist, McIver Daniel, Hugh William Morgan, Wilhelmus Johannes Quax, Margareta Adriana Herweijer, Brian Edward Jones