Patents by Inventor William F. Fett

William F. Fett 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: 7202063
    Abstract: A process for producing rhamnolipids involving culturing Pseudomonas chlororaphis strain NRRL B-30761 in a first aqueous culture medium containing about 0.3% NH4H2PO4, about 0.2% K2HPO4, about 0.2% carbon source, about 0.5 mg/L FeSO4, and about 0.1% MgSO4 for about 24–about 48 hours at about 25°–about 30° C. with orbital shaking, and then culturing Pseudomonas chlororaphis strain NRRL B-30761 in a static second aqueous culture medium containing per liter about 2% carbon source, about 0.7 g KH2PO4, about 0.9 g Na2HPO4, about 2 g NaNO3, about 0.4 g MgSO4.7H2O, and about 0.1 g CaCl2.2H2O for at least about 72 hours at about 20°–about 23° C., wherein the first and second aqueous culture medium contains only one source of carbon.
    Type: Grant
    Filed: August 3, 2005
    Date of Patent: April 10, 2007
    Assignee: United States of America as represented by the Secretary of Agriculture
    Inventors: Nereus W. Gunther, Daniel K. Y. Solaiman, William F. Fett