Patents by Inventor Debbie Grey

Debbie Grey 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).

  • Patent number: 5728550
    Abstract: A process for the production of an extracellular peroxidase using confectionery waste is disclosed. The first step of the process requires culturing a piece of plant tissue containing extracellular peroxidase-producing cells from a plant of the genus Acer, more specifically Acer pseudoplantanus. The culture medium is a solid culture medium and the culturing step is carried out until a callus forms on the solid culture medium. Further, the plant cells produced in the callus are dispersed into a liquid culture medium to form a suspension of plant cell culture. The suspension culture medium contains confectionery waste products which provide 1 to 15% by weight of sugars (i.e. fructose, glucose and sucrose). The culturing of the plant cells in suspension in the liquid culture medium with the concomitant accumulation of the extracellular peroxidase in the liquid culture medium and separating the enzyme therefrom.
    Type: Grant
    Filed: August 23, 1994
    Date of Patent: March 17, 1998
    Assignee: Phytera, Inc.
    Inventors: Michael William Fowler, Gagik Stephan-Sarkissian, Debbie Grey
  • Patent number: 5670357
    Abstract: A process for the production of peroxidase enzyme comprising an undifferentiated liquid suspension culture of peroxidase-producing plant cells from a plant of the species Theobroma cacao, Coleus blumei, and Silene alba, wherein the culture medium contains a carbohydrate waste material, and peroxidase enzymes derived therefrom.
    Type: Grant
    Filed: September 19, 1994
    Date of Patent: September 23, 1997
    Assignee: Phytera, Inc.
    Inventors: Gagik Stepan-Sarkissian, Debbie Grey, Margaret Elizabeth Spencer, Angela Marian Stafford, Sean Michael Vincent Ashton, Sandra Jane Scollick