Patents by Inventor Fiona Gruninger

Fiona Gruninger 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).

  • Tocopherol cyclase isolated from Chlorella protothecoides, Dunaliella salina and wheat leaves
    Patent number: 5432069
    Abstract: A tocopherol cyclase is produced in homogenous form which acts on phytyl benzoquinol derivatives to produce R', R', R'-tocopherols enantioselectively. The cyclase has a molecular weight of from about 48 kD to about 50 kD as determined by SDS-PAGE. The cyclase is isolated from Chlorella protothecoides, Dunaliella salina and wheat leaves of the Fidel variety.
    Type: Grant
    Filed: July 17, 1992
    Date of Patent: July 11, 1995
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Fiona Gruninger, Erich Hochuli, Peter K. Matzinger