Patents by Inventor Lichh R. Peng

Lichh R. Peng 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).

  • Polyolefin materials with reduced oxygen permeability
    Patent number: 10822470
    Abstract: Polymer compositions with reduce oxygen permeability are described. The polymer compositions may include one or more polyolefin polymers, and a nanoparticle filler. The nanoparticle filler represents about 2 wt. % to 5 wt. % of the weight of the polymer composition and reduce the oxygen permeability of the composition by about 20% or more. Also described are roofing systems that may include an insulation layer and a thermoplastic polyolefin layer made using the polymer compositions to protect the insulation layer from weather degradation.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: November 3, 2020
    Assignee: Johns Manville
    Inventor: Lichh R. Peng
  • POLYOLEFIN MATERIALS WITH REDUCED OXYGEN PERMEABILITY
    Publication number: 20140072808
    Abstract: Polymer compositions with reduce oxygen permeability are described. The polymer compositions may include one or more polyolefin polymers, and a nanoparticle filler. The nanoparticle filler represents about 2 wt. % to 5 wt. % of the weight of the polymer composition and reduce the oxygen permeability of the composition by about 20% or more. Also described are roofing systems that may include an insulation layer and a thermoplastic polyolefin layer made using the polymer compositions to protect the insulation layer from weather degradation.
    Type: Application
    Filed: September 7, 2012
    Publication date: March 13, 2014
    Inventor: Lichh R. Peng