Patents by Inventor Matthew G. Thorn

Matthew G. Thorn 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).

  • Polymerization catalysts for producing polymers with low levels of long chain branching
    Patent number: 7148298
    Abstract: This invention relates to catalyst compositions, methods, and polymers encompassing a Group 4 metallocene with bridging ?5-cyclopentadienyl-type ligands, in combination with a cocatalyst and an activator-support. The compositions and methods disclosed herein provide ethylene polymers with low levels of long chain branching.
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: December 12, 2006
    Assignee: Chevron Phillips Chemical Company, L.P.
    Inventors: Michael D. Jensen, Joel L. Martin, Max P. McDaniel, David C. Rolfing, Qing Yang, Matthew G. Thorn, Ashish M. Sukhadia, Youlu Yu, Jerry T. Lanier
  • Dual metallocene catalyst for producing film resins with good machine direction (MD) elmendorf tear strength
    Patent number: 7119153
    Abstract: This invention relates to catalyst compositions comprising a first metallocene compound, a second metallocene compound, at least one chemically-treated solid oxide, and at least one organoaluminum compound. This invention also relates to methods to prepare and use the catalyst compositions and new polyolefins. The compositions and methods disclosed herein provide ethylene polymers and copolymers with lower MI, increased melt strength, and good MD tear properties.
    Type: Grant
    Filed: January 21, 2004
    Date of Patent: October 10, 2006
    Inventors: Michael D. Jensen, Joel L. Martin, Max P. McDaniel, Qing Yang, Matthew G. Thorn, Elizabeth A. Benham, Ted H. Cymbaluk, Ashish M. Sukhadia, Rajendra K. Krishnaswamy, Mark E. Kertok
  • Synthesis of -metallocenes and their parent ligands in high yield
    Patent number: 7064225
    Abstract: The present invention provides a method of making compounds comprising linked cyclopentadienyl and fluorenyl groups, including substituted analogs thereof, which are precursors to ansa-metallocenes comprising bridged cyclopentadienyl and fluorenyl ligands. In one aspect, this invention provides a preparative method for (5-cyclopentadienyl)[5-(2,7-di-tert-butylfluorenyl)]hex-1-ene, and ansa-metallocenes comprising this ligand.
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: June 20, 2006
    Assignee: Chevron Phillips Chemical Company, L.P.
    Inventors: Matthew G. Thorn, Joel L. Martin, Qing Yang, Albert P. Masino
  • Catalyst compositions and polyolefins for extrusion coating applications
    Patent number: 7041617
    Abstract: This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, including polymerization methods using a supported catalyst composition. In one aspect, the present invention encompasses a catalyst composition comprising the contact product of a first metallocene compound, a second metallocene compound, at least one chemically-treated solid oxide, and at least one organoaluminum compound. The new resins were characterized by useful properties in impact, tear, adhesion, sealing, extruder motor loads and pressures at comparable melt index values, and neck-in and draw-down.
    Type: Grant
    Filed: January 9, 2004
    Date of Patent: May 9, 2006
    Assignee: Chevron Phillips Chemical Company, L.P.
    Inventors: Michael D. Jensen, Max P. McDaniel, Joel L. Martin, Elizabeth A. Benham, Randy Muninger, Gary Jerdee, Ashish M. Sukhadia, Qing Yang, Matthew G. Thorn
  • Polymerization catalysts for producing high melt index polymers without the use of hydrogen
    Patent number: 7026494
    Abstract: Various catalyst compositions including the contact product of at least one ansa-metallocene compound, at least one organoaluminum compound, and at least one activator-support are disclosed. Processes for forming such compositions and for forming polyolefins with such compositions are also disclosed. Metallocene compounds are also presented.
    Type: Grant
    Filed: January 10, 2005
    Date of Patent: April 11, 2006
    Assignee: Chevron Phillips Chemical Company, LP
    Inventors: Qing Yang, Michael D. Jensen, Matthew G. Thorn, Max P. McDaniel, Joel L. Martin, Tony R. Crain