Patents by Inventor Jonathan R. Whitton

Jonathan R. Whitton 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).

  • Extraction of poly(.beta.-hydroxy butyric acid)
    Patent number: 4358583
    Abstract: Poly (.beta.-hydroxy butyric acid), PHB, is extracted from a suspension of bacterial cells by causing the cells to flocculate, by pH modification, optionally with heating, and then extracting the PHB from the flocculated cells with a suitable extraction solvent. Flocculation of the cells renders subsequent separation of the PHB solution from the cell debris more facile. Preferably lipids are extracted from the flocculated cells before contact with the PHB extraction solvent.
    Type: Grant
    Filed: July 28, 1981
    Date of Patent: November 9, 1982
    Assignee: Imperial Chemical Industries PLC
    Inventors: John Walker, Jonathan R. Whitton