Patents by Inventor David Byran Harrison

David Byran Harrison 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).

  • Production of spherical polymers
    Patent number: 6294623
    Abstract: The process for producing bead polymers having a mean particle size of 0.5 to 50 &mgr;m and a narrow particle size distribution by polymerisation of monomers dissolved in a solvent that constitutes a precipitation agent for the polymers obtained from these monomers is characterized in that the solvent contains 5 to 3000 ppm of sulfur-free radical interceptors.
    Type: Grant
    Filed: December 10, 1999
    Date of Patent: September 25, 2001
    Assignee: Agfa-Gevaert
    Inventors: Wolfgang Podszun, David Byran Harrison, Frank Louwet