Patents by Inventor Felipe B. Martinez

Felipe B. Martinez 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).

  • Rheology modified relatively high melt strength polyethylene compositions and methods of making pipes, films, sheets, and blow-molded articles
    Patent number: 8920891
    Abstract: A polymer composition comprises a low-molecular-weight (LMW) ethylene polymer component and a high-molecular-weight (HMW) ethylene polymer component coupled with a polysulfonyl azide. Preferably, the LMW polyethylene component and the HMW polyethylene component co-crystallize in the composition such that it exhibits a single or substantially single peak in a lamella thickness distribution (LTD) curve. The ethylene polymer for the LMW and the HMW polyethylene components can be either homopolymer or ethylene copolymer. Preferably, both components are an ethylene copolymer of the same, or different, composition (that is, with the same or different comonomers). A method of making a pipe that includes selecting a polymer composition having a substantially single peak in the LTD curve is described. Compositions comprising a chromium-catalyzed ethylene polymer, coupled with a polysulfonyl azide are also described herein.
    Type: Grant
    Filed: December 9, 2005
    Date of Patent: December 30, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: William J. Michie, Jr., Dane Chang, Anthony C. Neubauer, Mridula Kapur, Todd A. Hogan, Felipe B. Martinez, Stephane Costeux
  • RHEOLOGY MODIFIED RELATIVELY HIGH MELT STRENGTH POLYETHYLENE COMPOSITIONS AND METHODS OF MAKING PIPES, FILMS, SHEETS, AND BLOW-MOLDED ARTICLES
    Publication number: 20090246433
    Abstract: A polymer composition comprises a low-molecular-weight (LMW) ethylene polymer component and a high-molecular-weight (HMW) ethylene polymer component coupled with a polysulfonyl azide. Preferably, the LMW polyethylene component and the HMW polyethylene component co-crystallize in the composition such that it exhibits a single or substantially single peak in a lamella thickness distribution (LTD) curve. The ethylene polymer for the LMW and the HMW polyethylene components can be either homopolymer or ethylene copolymer. Preferably, both components are an ethylene copolymer of the same, or different, composition (that is, with the same or different comonomers). A method of making a pipe that includes selecting a polymer composition having a substantially single peak in the LTD curve is described. Compositions comprising a chromium-catalyzed ethylene polymer, coupled with a polysulfonyl azide are also described herein.
    Type: Application
    Filed: December 9, 2005
    Publication date: October 1, 2009
    Inventors: William J. Michie, Dane Chang, Anthony C. Neubauer, Mridula Kapur, Todd A. Hogan, Felipe B. Martinez, Stephane Costeux