Patents by Inventor Lee Pierce

Lee Pierce 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).

  • HIGH SPECIFIC GRAVITY GEOSYNTHETIC COMPRISING POLYPROPYLENE
    Publication number: 20240191069
    Abstract: The present disclosure provides a geosynthetic. In one embodiment, the geosynthetic contains a composition containing (A) a polypropylene and (B) from greater than 0 wt % to less than 3 wt % of a halogen-free flame retardant, based on the total weight of the composition. In another embodiment, the geosynthetic contains a composition containing (A) a polypropylene and (B) greater than 20 wt % zinc sulfide, based on the total weight of the composition. In another embodiment, the geosynthetic contains a composition containing (A) a polypropylene; (B) a halogen-free flame retardant; and (C) greater than 20 wt % zinc sulfide, based on the total weight of the composition. The composition has a specific gravity greater than 1.00 g/cc.
    Type: Application
    Filed: February 16, 2024
    Publication date: June 13, 2024
    Applicant: Propex Operating Company, LLC
    Inventors: Chastity Adkins, Drew Loizeaux, Scott Manning, Lee Pierce
  • High specific gravity geosynthetic comprising polypropylene
    Patent number: 11932754
    Abstract: The present disclosure provides a geosynthetic. In one embodiment, the geosynthetic contains a composition containing (A) a polypropylene and (B) from greater than 0 wt % to less than 3 wt % of a halogen-free flame retardant, based on the total weight of the composition. In another embodiment, the geosynthetic contains a composition containing (A) a polypropylene and (B) greater than 20 wt % zinc sulfide, based on the total weight of the composition. In another embodiment, the geosynthetic contains a composition containing (A) a polypropylene; (B) a halogen-free flame retardant; and (C) greater than 20 wt % zinc sulfide, based on the total weight of the composition. The composition has a specific gravity greater than 1.00 g/cc.
    Type: Grant
    Filed: March 7, 2022
    Date of Patent: March 19, 2024
    Assignee: Propex Operating Company, LLC
    Inventors: Chastity Adkins, Drew Loizeaux, Scott Manning, Lee Pierce
  • HIGH SPECIFIC GRAVITY GEOSYNTHETIC COMPRISING POLYPROPYLENE
    Publication number: 20220289957
    Abstract: The present disclosure provides a geosynthetic. In one embodiment, the geosynthetic contains a composition containing (A) a polypropylene and (B) from greater than 0 wt % to less than 3 wt % of a halogen-free flame retardant, based on the total weight of the composition. In another embodiment, the geosynthetic contains a composition containing (A) a polypropylene and (B) greater than 20 wt % zinc sulfide, based on the total weight of the composition. In another embodiment, the geosynthetic contains a composition containing (A) a polypropylene; (B) a halogen-free flame retardant; and (C) greater than 20 wt % zinc sulfide, based on the total weight of the composition. The composition has a specific gravity greater than 1.00 g/cc.
    Type: Application
    Filed: March 7, 2022
    Publication date: September 15, 2022
    Inventors: Chastity Adkins, Drew Loizeaux, Scott Manning, Lee Pierce