Patents by Inventor Guan B. Lim

Guan B. Lim 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).

  • Separation process
    Patent number: 4910145
    Abstract: An aqueous suspension of micro-organism cells containing a 3-hydroxybutyrate polymer are subjected to a proteolytic enzyme digestion and/or a surfactant digestion in order to solubilise cell material other than the 3-hydroxybutyrate polymer.Prior to, or during the digestion, but before any proteolytic enzyme digestion step, the suspension is heated to at least 80.degree. C. to denature nucleic acids which otherwise hinder separation of the 3-hydroxybutyrate polymer containing residue from the suspension.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: March 20, 1990
    Assignee: Imperial Chemical Industries PLC
    Inventors: Paul A. Holmes, Guan B. Lim