Patents by Inventor Mark Kertok

Mark Kertok 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 and process for producing bimodal polymers in a single reactor
    Publication number: 20070043176
    Abstract: Catalyst compositions comprising a first metallocene compound, a second metallocene compound, an activator-support, and an organoaluminum compound are provided. Methods for preparing and using such catalysts to produce polyolefins are also provided. The compositions and methods disclosed herein provide ethylene polymers having a HLMI of from about 0.5 to about 25, a polymer density of from about 0.920 to about 0.965, and a polydispersity of from about 3.0 to about 30.
    Type: Application
    Filed: August 22, 2005
    Publication date: February 22, 2007
    Inventors: Joel Martin, Matthew Thorn, Max McDaniel, Michael Jensen, Qing Yang, Paul DesLauriers, Mark Kertok
  • Ethylene homopolymers or copolymers having good machine direction (MD) elmendorf tear strength
    Publication number: 20060229420
    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: Application
    Filed: June 5, 2006
    Publication date: October 12, 2006
    Inventors: Michael Jensen, Joel Martin, Max McDaniel, Qing Yang, Matthew Thorn, Elizabeth Benham, Ted Cymbaluk, Ashish Sukhadia, Rajendra Krishnaswamy, Mark Kertok
  • Resins that yield low haze films and the process for their production
    Publication number: 20060100401
    Abstract: Catalyst compositions comprising a first metallocene compound, a second metallocene compound, a third metallocene compound, a chemically-treated solid oxide, and an organoaluminum compound are provided. Methods for preparing and using the catalyst and polyolefins are also provided. The compositions and methods disclosed herein provide ethylene polymers having decreased haze while minimizing impact on other properties, such as dart impact.
    Type: Application
    Filed: November 10, 2004
    Publication date: May 11, 2006
    Inventors: Joel Martin, Elizabeth Benham, Mark Kertok, Michael Jensen, Max McDaniel, Gil Hawley, Qing Yang, Matthew Thorn, Ashish Sukhadia
  • Dual metallocene catalyst for producing film resins with good machine direction (MD) elmendorf tear strength
    Publication number: 20050159300
    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: Application
    Filed: January 21, 2004
    Publication date: July 21, 2005
    Inventors: Michael Jensen, Joel Martin, Max McDaniel, Qing Yang, Matthew Thorn, Elizabeth Benham, Ted Cymbaluk, Ashish Sukhadia, Rajendra Krishnaswamy, Mark Kertok