Patents by Inventor Ronald J. Gustafson

Ronald J. Gustafson 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).

  • Multi-stage anionic dispersion homopolymerization to form microparticles with narrow size distribution
    Patent number: 4829135
    Abstract: Styrene or other anionically polymerizable monomer is anionically homopolymerized in a dispersion using a non-solvent, e.g., hexane using three or more stages to obtain spherical microparticles, e.g., 2-5 microns, with a narrow size distribution.
    Type: Grant
    Filed: December 29, 1987
    Date of Patent: May 9, 1989
    Assignee: Mobil Oil Corporation
    Inventors: Binnur Z. Gunesin, James G. Murray, Frederick C. Schwab, Ronald J. Gustafson