Patents by Inventor David John Grantham

David John Grantham 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 an oil including docosahexaenoic acid
    Patent number: 6977166
    Abstract: C. cohnii is cultured in a suitable growth medium with acetic acid/acetate as the main carbon source. The acetate is provided, and replenished, by adding acetic acid to the growth medium in response to an increase in pH resulting from the utilisation of acetic acid/acetate by C. cohnii. The C. cohnii produces relatively high levels of docosahexaenoic acid (DHA). A stationary phase is not essential for satisfactory DHA production.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: December 20, 2005
    Assignees: The University of Hull, ATV BV
    Inventors: Colin Ratledge, Alistair James Anderson, Kanagasooriyam Kanagachandran, David John Grantham, Janet Christine Stephenson, Martin E. de Swaaf, Lolke Sijtsma