Patents by Inventor Timothy A. Leaf

Timothy A. Leaf 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).

  • Method of producing a compound by fermentation
    Patent number: 7459294
    Abstract: During the production of a product compound by fermentation, the concentration of a precursor compound is maintained within a pre-selected concentration range by having an adsorbent resin in contact with the culture medium. The adsorbent resin reversibly adsorbs precursor compound and, as un-adsorbed precursor compound is converted to product compound, adsorbed precursor compound is released from the resin, thus maintaining the concentration of precursor compound within the pre-selected range.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: December 2, 2008
    Assignee: Kosan Biosciences Incorporated
    Inventors: Timothy A. Leaf, Ruchir P. Desai, Peter Licari, Elaine Jennifer Woo