Patents by Inventor Gregory M. Swisher

Gregory M. Swisher 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).

  • Conjugated diene/monovinylarene block copolymers blends
    Patent number: 6835778
    Abstract: This invention relates to polymer blends, which comprise at least one tapered conjugated diene-monovinylarene block copolymer and at least one styrenic polymer. The polymer blends possess good optical and mechanical properties.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: December 28, 2004
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Gregory M. Swisher, Vergil H Rhodes, Jr., Craig D. DePorter, Nathan E. Stacy, George A. Moczygemba
  • Conjugated diene/monovinylarene block copolymers blends
    Publication number: 20040059057
    Abstract: This invention relates to polymer blends, which comprise at least one tapered conjugated diene-monovinylarene block copolymer and at least one styrenic polymer. The polymer blends possess good optical and mechanical properties.
    Type: Application
    Filed: August 6, 2003
    Publication date: March 25, 2004
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: Gregory M. Swisher, Vergil H. Rhodes, Craig D. DePorter, Nathan E. Stacy, George A. Moczygemba
  • Conjugated diene/monovinylarene block copolymers blends
    Publication number: 20030004267
    Abstract: This invention relates to polymer blends, which comprise at least one tapered conjugated diene-monovinylarene block copolymer and at least one styrenic polymer. The polymer blends possess good optical and mechanical properties.
    Type: Application
    Filed: May 20, 2002
    Publication date: January 2, 2003
    Inventors: Gregory M. Swisher, Vergil H. Rhodes, Craig D. DePorter, Nathan E. Stacy, George A. Moczygemba
  • Plastic pellet sorting apparatus with extruded side-stream monitoring
    Patent number: 4781559
    Abstract: An automated system is provided for selectively separating resin pellets having a gel count below a specified maximum from pellets having a gel count above the specified maximum, while the pellets are flowing in a pneumatic conveyor. The separation is based on an essentially continuous measurement in which a laser beam is utilized to detect the number of gels in a film made from pellets withdrawn as a sample stream from the main pellet stream. In response to the gel count measurement, a control signal is established that is utilized to manipulate a diverter valve located in the pneumatic conveyor, which diverts pastic pellet flow between a preferred storage means storing pellets having a low gel count and a secondary storage means for storing pellets having a higher gel count.
    Type: Grant
    Filed: December 24, 1987
    Date of Patent: November 1, 1988
    Assignee: Phillips Petroleum Company
    Inventors: Ronald D. Mathis, Gregory M. Swisher, Alejandro V. Santin
  • Automatic method for sorting plastic pellets
    Patent number: 4756855
    Abstract: An automated method is provided for selectively separating resin pellets having a gel count below a specified maximum from pellets having a gel count above the specified maximum, while the pellets are flowing in a pneumatic conveyor. The separation is based on an essentially continuous measurement in which a laser beam is utilized to detect the number of gels in a film made from pellets withdrawn as a sample stream from the main pellet stream. In response to the gel count measurement, a control signal is established that is utilized to manipulate a diverter valve located in the pneumatic conveyor, which diverts plastic pellet flow between a preferred storage means storing pellets having a low gel count and a secondary storage means for storing pellets having a higher gel count.
    Type: Grant
    Filed: April 4, 1986
    Date of Patent: July 12, 1988
    Assignee: Phillips Petroleum Company
    Inventors: Ronald D. Mathis, Gregory M. Swisher, Alejandro V. Santin
  • Polymer blend composition exhibiting impact resistance
    Patent number: 4530968
    Abstract: A composition of resinous, non-elastomeric block copolymer of a conjugated diene and a vinylarene in an amount of polyvinylchloride sufficient to provide synergistic notched Izod impact strength as determined by ASTM D-256. A method for preparing this polymeric composition.
    Type: Grant
    Filed: June 19, 1984
    Date of Patent: July 23, 1985
    Inventors: Gregory M. Swisher, Ronald D. Mathis