Patents by Inventor Robert Steven Eisinger

Robert Steven Eisinger 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 conditioning a gas-phase reactor to produce an ethylene-propylene or ethylene-propylene-diene rubber
    Patent number: 6011128
    Abstract: There is provided process for producing an ethylene-alpha-olefin polymer at a polymerization reaction temperature in excess of the softening temperature of the polymer in a gas-phase fluidized-bed reactor in the presence of a polymerization catalyst and wherein the polymerization reaction is conducted in the presence of an inert particulate material, the improvement comprising: commencing polymerization by polymerizing an ethylene propylene rubber having a crystallinity ranging from about 4 to 18 percent as measured by differential scanning calorimetry.
    Type: Grant
    Filed: June 17, 1998
    Date of Patent: January 4, 2000
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Robert Steven Eisinger, Kiu Hee Lee, Fathi David Hussein, Daniel Paul Zilker, Jr.