Patents by Inventor Michael E. Muhle

Michael E. Muhle 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 polymerizing monomers in fluidized beds
    Patent number: 5462999
    Abstract: The invention is directed toward polymerizing or copolymerizing alpha-olefins either alone or in combination with one or more other alpha-olefins in the presence of a metallocene catalyst in a gas phase reactor having a fluidized bed and a fluidizing medium such that the fluidizing medium entering the reactor comprises a gas and a liquid phase.
    Type: Grant
    Filed: October 3, 1994
    Date of Patent: October 31, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: John R. Griffin, Marc L. DeChellis, Michael E. Muhle
  • Process for transitioning between incompatible polymerization catalysts
    Patent number: 5442019
    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: March 25, 1994
    Date of Patent: August 15, 1995
    Assignee: Exxon Chemical Company
    Inventors: Agapios K. Agapiou, Michael E. Muhle, Gary T. Renola
  • Process for polymerizing monomers in fluidized beds
    Patent number: 5405922
    Abstract: The invention is directed toward polymerizing alpha-olefins either alone or in combination with one or more other alpha-olefins utilizing a bulky ligand transition metal catalyst in a gas phase fluidized bed polymerization reactor operating in condensed mode.
    Type: Grant
    Filed: March 22, 1994
    Date of Patent: April 11, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Marc L. DeChellis, John R. Griffin, Michael E. Muhle
  • Polymerization catalyst, production and use
    Patent number: 4701506
    Abstract: Ethylene and alpha-olefins are homopolymerized or copolymerized with another olefin monomer in the presence of a catalyst system comprising an organo metal cocatalyst and a titanium-containing catalyst component, said titanium-containing catalyst component being obtained by reacting in the presence of a porous particulate material, a halogen, an organic magnesium compound, an oxygen-containing compound, titanium tetrachloride and treating the solids with an organometallic compound of a Group IIa, IIb or IIIa metal.
    Type: Grant
    Filed: July 30, 1986
    Date of Patent: October 20, 1987
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Agapios K. Agapiou, Michael E. Muhle, Myron B. Kurtzman
  • Polymerization catalyst, production and use
    Patent number: 4618596
    Abstract: Ethylene and alpha-olefins are homopolymerized or copolymerized with another olefin monomer in the presence of a catalyst system comprising an organo metal cocatalyst and a titanium-containing catalyst component, said titanium-containing catalyst component being obtained by reacting in the presence of a porous particulate material, a halogen, an organic magnesium compound, an oxygen-containing compound, titanium tetrachloride and treating the solids with an organometallic compound of a Group IIa, IIb or IIIa metal.
    Type: Grant
    Filed: July 26, 1985
    Date of Patent: October 21, 1986
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Agapios K. Agapiou, Michael E. Muhle, Myron B. Kurtzman