Patents by Inventor Elizabeth Mary Lanier

Elizabeth Mary Lanier 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).

  • Methods for improving color stability in polyethylene resins
    Patent number: 11401405
    Abstract: Polymer compositions containing a titanated chromium-based ethylene polymer, 150-350 ppm of zinc stearate and/or calcium stearate, 50-5000 ppm of a phenolic antioxidant, 200-3000 ppm of a diphosphite antioxidant, and optionally, 200-3000 ppm of a monophosphite antioxidant, are described. These polymer compositions have improved long-term color stability, as well as lower levels of color formation after aging.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: August 2, 2022
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Justin Wade Kamplain, Elizabeth Mary Lanier
  • Methods for Improving Color Stability in Polyethylene Resins
    Publication number: 20200224014
    Abstract: Polymer compositions containing a titanated chromium-based ethylene polymer, 150-350 ppm of zinc stearate and/or calcium stearate, 50-5000 ppm of a phenolic antioxidant, 200-3000 ppm of a diphosphite antioxidant, and optionally, 200-3000 ppm of a monophosphite antioxidant, are described. These polymer compositions have improved long-term color stability, as well as lower levels of color formation after aging.
    Type: Application
    Filed: March 26, 2020
    Publication date: July 16, 2020
    Inventors: Justin Wade Kamplain, Elizabeth Mary Lanier
  • Methods for improving color stability in polyethylene resins
    Patent number: 10703886
    Abstract: Polymer compositions containing a titanated chromium-based ethylene polymer, 150-350 ppm of zinc stearate and/or calcium stearate, 50-5000 ppm of a phenolic antioxidant, 200-3000 ppm of a diphosphite antioxidant, and optionally, 200-3000 ppm of a monophosphite antioxidant, are described. These polymer compositions have improved long-term color stability, as well as lower levels of color formation after aging.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: July 7, 2020
    Assignee: Chevron Phillips Chemical Comany LP
    Inventors: Justin Wade Kamplain, Elizabeth Mary Lanier
  • Methods for Improving Color Stability in Polyethylene Resins
    Publication number: 20180340057
    Abstract: Polymer compositions containing a titanated chromium-based ethylene polymer, 150-350 ppm of zinc stearate and/or calcium stearate, 50-5000 ppm of a phenolic antioxidant, 200-3000 ppm of a diphosphite antioxidant, and optionally, 200-3000 ppm of a monophosphite antioxidant, are described. These polymer compositions have improved long-term color stability, as well as lower levels of color formation after aging.
    Type: Application
    Filed: May 22, 2018
    Publication date: November 29, 2018
    Inventors: Justin Wade Kamplain, Elizabeth Mary Lanier