Patents by Inventor Ronald J. Stapleton

Ronald J. Stapleton 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).

  • Process for preparing molded microcellular elastomers
    Patent number: 4783295
    Abstract: An improved process for producing a molded microcellular elastomer with a reduced number of voids from at least two liquid reactants and a gas, which process comprises introducing into at least one reactant a gas to form an admixture; passing the admixture through a static mixer at superatmospheric pressure; then immediately mixing the admixture with the other reactant at superatmospheric pressure to form a reaction mixture; introducing the reaction mixture into a mold in which the pressure is substantially below the superatmospheric pressures used above; and curing the reaction mixture in the mold to produce a molded microcellular elastomer with a reduced number of large voids.
    Type: Grant
    Filed: December 17, 1985
    Date of Patent: November 8, 1988
    Assignee: Union Carbide Corporation
    Inventors: James D. Kearns, Ronald J. Stapleton