Patents by Inventor Katherine D. Collier

Katherine D. Collier 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).

  • Purified cellulase and method of producing
    Patent number: 6017870
    Abstract: A purified novel cellulase composition is provided which may be isolated from a fermentation culture of Trichoderma longibrachiatum and has a molecular weight of about 95-105 kD as approximated on SDS-PAGE (see FIG. 1), a pl of about 5.6-6.8 as estimated on an IEF gel and a pH optimum of about 5.0 on RBB-CMC when measured at 65.degree. C. and pH 4 or lower at temperatures of 40.degree. C. and 50.degree. C.
    Type: Grant
    Filed: October 9, 1996
    Date of Patent: January 25, 2000
    Assignee: Genencor International, Inc.
    Inventors: Benjamin S. Bower, Kathleen A. Clarkson, Katherine D. Collier, James T. Kellis, Moira B. Kelly, Edmund A. Larenas
  • Cellulase enzymes and systems for their expressions
    Patent number: 5874276
    Abstract: The present invention relates to the cloning and high level expression of novel truncated cellulase proteins or derivatives thereof in the filamentous fungus Trichoderma longibrachiatum. Further aspects of the present invention relate to fungal transformants that express the novel truncated cellulases and derivatives, and expression vectors comprising the DNA gene fragments or variants thereof that code for the truncated cellulases derived from Trichoderma longibrachiatum using genetic engineering techniques.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: February 23, 1999
    Assignee: Genencor International, Inc.
    Inventors: Timothy Fowler, Kathleen A. Clarkson, Michael Ward, Katherine D. Collier, Edmund Larenas
  • Cellulase enzymes and systems for their expressions
    Patent number: 5861271
    Abstract: The present invention relates to the cloning and high level expression of novel truncated cellulase proteins or derivatives thereof in the filamentous fungus Trichoderma longibrachiatum. Further aspects of the present invention relate to fungal transformants that express the novel truncated cellulases and derivatives, and expression vectors comprising the DNA gene fragments or variants thereof that code for the truncated cellulases derived from Trichoderma longibrachiatum using genetic engineering techniques.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: January 19, 1999
    Inventors: Timothy Fowler, Kathleen A. Clarkson, Michael Ward, Katherine D. Collier, Edmund Larenas