Patents by Inventor Richard John Ketz

Richard John Ketz 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).

  • Plastics additives: improved process, products, and articles containing same
    Publication number: 20010056150
    Abstract: An improved process for preparing an aqueous dispersion of plastics additive polymer particles using emulsion polymerization of one or more ethylenically unsaturated monomers in an aqueous medium in the presence of a free radical redox initiator system is described. The free radical redox initiator system uses an oxidizing agent, a reducing agent, and a combination of metal ion species. The plastics additive polymer particles are useful as processing aids and impact modifiers in PVC articles.
    Type: Application
    Filed: May 4, 2001
    Publication date: December 27, 2001
    Inventors: Robert Julian Smith, Katherine Sue Rice, Kirk Harold Moyer, Richard John Ketz, Eugene Patrick Dougherty, Patricia Marie Lesko