Patents by Inventor Gary Thomas Renola

Gary Thomas Renola 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).

  • Olefin polymerization process with little or no scavenger present
    Patent number: 5763543
    Abstract: The present invention relates to a continuous process for the polymerization of olefin(s) utilizing a metallocene catalyst or catalyst system in a continuous slurry or gas phase polymerization process for polymerizing monomer(s). The invention is more particularly drawn to a gas phase polymerization process for polymerizing one or more olefin(s), alone or in combination, in the presence of a metallocene catalyst system in a fluidized bed reactor, preferably operating in a condensed mode.
    Type: Grant
    Filed: September 14, 1994
    Date of Patent: June 9, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Michael Elroy Muhle, Gary Thomas Renola, Agapios Kyriacos Agapiou, Dwayne Lee Litteer, John Robert Griffin
  • Process for transitioning between incompatible polymerization catalysts
    Patent number: 5753786
    Abstract: This invention relates to a process for transitioning between incompatible polymerization catalyst systems. Particularly, the invention relates to a process for transitioning from an olefin polymerization reaction utilizing a traditional Ziegler-Natta catalyst system to a metallocene-olefin polymerization reaction.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: May 19, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Agapios Kyriacos Agapiou, Michael Elroy Muhle, Gary Thomas Renola
  • Process for transitioning between incompatible polymerization catalysts
    Patent number: 5747612
    Abstract: This invention relates to a process for transitioning between incompatible polymerization catalyst systems. Particularly, the invention relates to a process for transitioning from an olefin polymerization reaction utilizing a traditional Ziegler-Natta catalyst system to a metallocene-olefin polymerization reaction.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: May 5, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Agapios Kyriacos Agapiou, Michael Elroy Muhle, Gary Thomas Renola
  • Polymerization process
    Patent number: 5712352
    Abstract: The present invention relates to a continuous process for the polymerization of olefin(s) utilizing a metallocene catalyst or catalyst system in a continuous slurry or gas phase polymerization process. The invention is more particularly drawn to a gas phase polymerization process for polymerizing one or more olefin(s) in the presence of a metallocene catalyst system in a fluidized bed reactor in the absence of or with a low mount of a scavenger.
    Type: Grant
    Filed: October 30, 1995
    Date of Patent: January 27, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Patrick Brant, John R. Griffin, Michael Elroy Muhle, Dwayne Lee Litteer, Agapios Kyriacos Agapiou, Gary Thomas Renola
  • Process for transitioning between incompatible polymerization catalysts
    Patent number: 5672666
    Abstract: This invention relates to a process for transitioning between polymerization catalyst systems which are incompatible with each other. Particularly, the invention relates to a process for transitioning from an olefin polymerization reaction utilizing a traditional Ziegler-Natta catalyst system to a metallocene-olefin polymerization reaction.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: September 30, 1997
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Michael Elroy Muhle, Agapios Kyriacos Agapiou, Gary Thomas Renola
  • Process for transitioning between incompatible polymerization catalysts
    Patent number: 5672665
    Abstract: This invention relates to a process for transitioning between incompatible polymerization catalyst systems. Particularly, the invention relates to a process for transitioning from an olefin polymerization reaction utilizing a traditional Ziegler-Natta catalyst system to a metallocene-olefin polymerization reaction.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: September 30, 1997
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Agapios Kyriacos Agapiou, Michael Elroy Muhle, Gary Thomas Renola