Patents by Inventor Robert David Burrows

Robert David Burrows 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).

  • Polymerization processes and products
    Patent number: 6277932
    Abstract: Beads are made from water-soluble monomer or monomer blend by reverse phase bead polymerization by extruding aqueous monomer beads into or onto the top of an upflowing column of non-aqueous liquid and the beads polymerise as they float downwardly through the column during a period of at least ½ minute. The resultant beads can have a very narrow particle size distribution.
    Type: Grant
    Filed: August 12, 1999
    Date of Patent: August 21, 2001
    Assignee: Ciba Specialty Chemicals Water Treatments, Ltd.
    Inventors: Martin William Whitley, Gareth Ian Naylor, David Andrew Houlton, Jonathan Heath Veal, Robert David Burrows