Patents by Inventor Darin Dotson

Darin Dotson 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).

  • Thermoplastic polymer composition and method for making films from the same
    Patent number: 12583984
    Abstract: A thermoplastic polymer composition comprises a polyethylene polymer composition and a salt of bicyclo[2.2.1]heptane-2,3-dicarboxylic acid. The polyethylene polymer composition can have a Melt Relaxation Index of 2 or greater. A method for molding a thermoplastic polymer composition comprises the steps of (a) providing an apparatus comprising a die with an annular orifice, a means for blowing pressurized fluid into a tube exiting the die orifice, and a means for drawing and collecting the tube; (b) providing the thermoplastic polymer composition described above; (c) heating the thermoplastic polymer composition to melt the thermoplastic polymer composition; (d) extruding the molten thermoplastic polymer composition through the die to form a tube; (e) blowing a pressurized fluid into the tube to inflate the tube while simultaneously drawing it; (f) allowing the film to cool; and (g) collecting the film.
    Type: Grant
    Filed: August 9, 2024
    Date of Patent: March 24, 2026
    Assignee: Milliken & Company
    Inventors: Darin Dotson, Xiaoyou Xu, Walter Forrister
  • Polyethylene polymer compositions and articles made from the same
    Patent number: 12559609
    Abstract: A polymer composition comprises a polyethylene polymer having a Melt Relaxation Index of 2 or greater and a salt of a branched alkyl phosphonic acid. A polyethylene film having improved barrier to water vapor and oxygen comprises a high-density polyethylene polymer having a density of about 930 kg/m3 to about 980 kg/m3 and a Melt Relaxation Index of 2 or greater and a salt of a branched alkyl phosphonic acid.
    Type: Grant
    Filed: April 21, 2022
    Date of Patent: February 24, 2026
    Assignee: Milliken & Company
    Inventors: Darin Dotson, Walter Forrister, Xiaoyou Xu, Hua Sun
  • Polyethylene polymer compositions and articles made from the same
    Patent number: 12528933
    Abstract: A polymer composition comprises a polyethylene polymer having a Melt Relaxation Ratio of 1.5 or greater and a salt of a branched alkyl phosphonic acid. A method for molding a thermoplastic polymer composition comprises the steps of (a) providing an apparatus comprising a die and a mold cavity; (b) providing the polymer composition described above; (c) heating the polymer composition to melt the polymer composition; (d) extruding the molten polymer composition through the die to form a parison; (e) capturing the parison in the mold cavity; (f) blowing a pressurized fluid into the parison to inflate the parison and conform it to the interior surface of the mold cavity; (g) allowing the molded article to cool so that the molded article retains its shape; and (h) removing the molded article from the mold cavity.
    Type: Grant
    Filed: April 21, 2022
    Date of Patent: January 20, 2026
    Assignee: Milliken & Company
    Inventors: Darin Dotson, Walter Forrister, Xiaoyou Xu, Hua Sun
  • POLYPROPYLENE POLYMER COMPOSITIONS AND ARTICLES MADE FROM THE SAME
    Publication number: 20250346736
    Abstract: A polymer composition comprises a polypropylene polymer and a salt of a branched alkyl phosphonic acid.
    Type: Application
    Filed: July 22, 2025
    Publication date: November 13, 2025
    Inventors: Darin Dotson, Xiaoyou XU, Hua Sun, Chi-Chun Tsai, Corey Williams
  • Polypropylene polymer compositions and articles made from the same
    Patent number: 12391820
    Abstract: A polymer composition comprises a polypropylene polymer and a salt of a branched alkyl phosphonic acid.
    Type: Grant
    Filed: November 13, 2023
    Date of Patent: August 19, 2025
    Assignee: Milliken & Company
    Inventors: Darin Dotson, Xiaoyou Xu, Hua Sun, Chi-Chun Tsai, Corey Williams
  • THERMOPLASTIC POLYMER COMPOSITION AND METHOD FOR MAKING FILMS FROM THE SAME
    Publication number: 20240400774
    Abstract: A thermoplastic polymer composition comprises a polyethylene polymer composition and a salt of bicyclo[2.2.1]heptane-2,3-dicarboxylic acid. The polyethylene polymer composition can have a Melt Relaxation Index of 2 or greater. A method for molding a thermoplastic polymer composition comprises the steps of (a) providing an apparatus comprising a die with an annular orifice, a means for blowing pressurized fluid into a tube exiting the die orifice, and a means for drawing and collecting the tube; (b) providing the thermoplastic polymer composition described above; (c) heating the thermoplastic polymer composition to melt the thermoplastic polymer composition; (d) extruding the molten thermoplastic polymer composition through the die to form a tube; (e) blowing a pressurized fluid into the tube to inflate the tube while simultaneously drawing it; (f) allowing the film to cool; and (g) collecting the film.
    Type: Application
    Filed: August 9, 2024
    Publication date: December 5, 2024
    Inventors: Darin Dotson, Xiaoyou Xu, Walter Forrister
  • POLYETHYLENE POLYMER COMPOSITIONS AND ARTICLES MADE FROM THE SAME
    Publication number: 20240317971
    Abstract: A polymer composition comprises a polyethylene polymer and a salt of a branched alkyl phosphonic acid. A polyethylene film having improved barrier to water vapor and oxygen comprises a high-density polyethylene polymer having a density of about 930 kg/m3 to about 980 kg/m3 and a salt of a branched alkyl phosphonic acid.
    Type: Application
    Filed: June 6, 2024
    Publication date: September 26, 2024
    Inventors: Darin Dotson, Walter Forrister, Xiaoyou XU, Hua Sun
  • Thermoplastic polymer composition and method for making films from the same
    Patent number: 12065550
    Abstract: A thermoplastic polymer composition comprises a polyethylene polymer composition and a salt of bicyclo[2.2.1]heptane-2,3-dicarboxylic acid. The polyethylene polymer composition can have a Melt Relaxation Index of 2 or greater. A method for molding a thermoplastic polymer composition comprises the steps of (a) providing an apparatus comprising a die with an annular orifice, a means for blowing pressurized fluid into a tube exiting the die orifice, and a means for drawing and collecting the tube; (b) providing the thermoplastic polymer composition described above; (c) heating the thermoplastic polymer composition to melt the thermoplastic polymer composition; (d) extruding the molten thermoplastic polymer composition through the die to form a tube; (e) blowing a pressurized fluid into the tube to inflate the tube while simultaneously drawing it; (f) allowing the film to cool; and (g) collecting the film.
    Type: Grant
    Filed: July 28, 2021
    Date of Patent: August 20, 2024
    Assignee: Milliken & Company
    Inventors: Darin Dotson, Xiaoyou Xu, Walter Forrister
  • Polyethylene polymer compositions and articles made from the same
    Patent number: 12037478
    Abstract: A polymer composition comprises a polyethylene polymer and a salt of a branched alkyl phosphonic acid. A polyethylene film having improved barrier to water vapor and oxygen comprises a high-density polyethylene polymer having a density of about 930 kg/m3 to about 980 kg/m3 and a salt of a branched alkyl phosphonic acid.
    Type: Grant
    Filed: April 21, 2022
    Date of Patent: July 16, 2024
    Assignee: Milliken & Company
    Inventors: Darin Dotson, Walter Forrister, Xiaoyou Xu, Hua Sun
  • POLYPROPYLENE POLYMER COMPOSITIONS AND ARTICLES MADE FROM THE SAME
    Publication number: 20240084107
    Abstract: A polymer composition comprises a polypropylene polymer and a salt of a branched alkyl phosphonic acid.
    Type: Application
    Filed: November 13, 2023
    Publication date: March 14, 2024
    Inventors: Darin Dotson, Xiaoyou XU, Hua Sun, Chi-Chun Tsai, Corey Williams
  • Thermoplastic polymer composition and method for making articles and films from the same
    Patent number: 11891495
    Abstract: A thermoplastic polymer composition comprises a polyethylene polymer composition and a salt of bicyclo[2.2.1]heptane-2,3-dicarboxylic acid. The polyethylene polymer composition can have a Melt Relaxation Product of 50,000 or less. A method for producing an injection molded article comprises the steps of (a) providing a thermoplastic polymer composition as described above, (b) melting the thermoplastic polymer composition, (c) injecting the molten thermoplastic polymer composition into a mold cavity, (d) cooling the molten thermoplastic polymer composition, and (e) ejecting the injection molded article from the mold cavity. A method for producing a film comprises the steps of (a) providing a thermoplastic polymer composition as described above, (b) melting the thermoplastic polymer composition, (c) extruding the molten thermoplastic polymer composition through a slot-shaped die orifice to form a film, (d) cooling the film, and (e) collecting the film.
    Type: Grant
    Filed: July 28, 2021
    Date of Patent: February 6, 2024
    Assignee: Milliken & Company
    Inventors: Walter Forrister, Xiaoyou Xu, Darin Dotson
  • Thermoplastic polymer composition and method for molding the same
    Patent number: 11884800
    Abstract: A thermoplastic polymer composition comprises a polyethylene polymer composition and a salt of bicyclo[2.2.1]heptane-2,3-dicarboxylic acid. The polyethylene polymer composition can have a Melt Relaxation Ratio of 1.5 or greater. A method for molding a thermoplastic polymer composition comprises the steps of (a) providing an apparatus comprising a die and a mold cavity; (b) providing the thermoplastic polymer composition described above; (c) heating the thermoplastic polymer composition to melt the thermoplastic polymer composition; (d) extruding the molten thermoplastic polymer composition through the die to form a parison; (e) capturing the parison in the mold cavity; (f) blowing a pressurized fluid into the parison to inflate the parison and conform it to the interior surface of the mold cavity; (g) allowing the molded article to cool so that the molded article retains its shape; and (h) removing the molded article from the mold cavity.
    Type: Grant
    Filed: July 28, 2021
    Date of Patent: January 30, 2024
    Assignee: Milliken & Company
    Inventors: Darin Dotson, Xiaoyou Xu, Walter Forrister
  • Polypropylene polymer compositions and articles made from the same
    Patent number: 11814504
    Abstract: A polymer composition comprises a polypropylene polymer and a salt of a branched alkyl phosphonic acid.
    Type: Grant
    Filed: April 21, 2022
    Date of Patent: November 14, 2023
    Assignee: Milliken & Company
    Inventors: Darin Dotson, Xiaoyou Xu, Hua Sun, Chi-Chun Tsai, Corey Williams
  • POLYPROPYLENE POLYMER COMPOSITIONS AND ARTICLES MADE FROM THE SAME
    Publication number: 20220356327
    Abstract: A polymer composition comprises a polypropylene polymer and a salt of a branched alkyl phosphonic acid.
    Type: Application
    Filed: April 21, 2022
    Publication date: November 10, 2022
    Inventors: Darin Dotson, Xiaoyou XU, Hua Sun, Chi-Chun Tsai, Corey Williams
  • POLYETHYLENE POLYMER COMPOSITIONS AND ARTICLES MADE FROM THE SAME
    Publication number: 20220348739
    Abstract: A polymer composition comprises a polyethylene polymer and a salt of a branched alkyl phosphonic acid. A polyethylene film having improved barrier to water vapor and oxygen comprises a high-density polyethylene polymer having a density of about 930 kg/m3 to about 980 kg/m3 and a salt of a branched alkyl phosphonic acid.
    Type: Application
    Filed: April 21, 2022
    Publication date: November 3, 2022
    Inventors: Darin Dotson, Walter Forrister, Xiaoyou XU, Hua Sun
  • POLYETHYLENE POLYMER COMPOSITIONS AND ARTICLES MADE FROM THE SAME
    Publication number: 20220348740
    Abstract: A polymer composition comprises a polyethylene polymer having a Melt Relaxation Index of 2 or greater and a salt of a branched alkyl phosphonic acid. A polyethylene film having improved barrier to water vapor and oxygen comprises a high-density polyethylene polymer having a density of about 930 kg/m3 to about 980 kg/m3 and a Melt Relaxation Index of 2 or greater and a salt of a branched alkyl phosphonic acid.
    Type: Application
    Filed: April 21, 2022
    Publication date: November 3, 2022
    Inventors: Darin Dotson, Walter Forrister, Xiaoyou XU, Hua Sun
  • POLYETHYLENE POLYMER COMPOSITIONS AND ARTICLES MADE FROM THE SAME
    Publication number: 20220348741
    Abstract: A polymer composition comprises a polyethylene polymer having a Melt Relaxation Ratio of 1.5 or greater and a salt of a branched alkyl phosphonic acid. A method for molding a thermoplastic polymer composition comprises the steps of (a) providing an apparatus comprising a die and a mold cavity; (b) providing the polymer composition described above; (c) heating the polymer composition to melt the polymer composition; (d) extruding the molten polymer composition through the die to form a parison; (e) capturing the parison in the mold cavity; (f) blowing a pressurized fluid into the parison to inflate the parison and conform it to the interior surface of the mold cavity; (g) allowing the molded article to cool so that the molded article retains its shape; and (h) removing the molded article from the mold cavity.
    Type: Application
    Filed: April 21, 2022
    Publication date: November 3, 2022
    Inventors: Darin Dotson, Walter Forrister, Xiaoyou XU, Hua Sun
  • THERMOPLASTIC POLYMER COMPOSITION AND METHOD FOR MAKING ARTICLES AND FILMS FROM THE SAME
    Publication number: 20220235196
    Abstract: A thermoplastic polymer composition comprises a polyethylene polymer composition and a salt of bicyclo[2.2.1]heptane-2,3-dicarboxylic acid. The polyethylene polymer composition can have a Melt Relaxation Product of 50,000 or less. A method for producing an injection molded article comprises the steps of (a) providing a thermoplastic polymer composition as described above, (b) melting the thermoplastic polymer composition, (c) injecting the molten thermoplastic polymer composition into a mold cavity, (d) cooling the molten thermoplastic polymer composition, and (e) ejecting the injection molded article from the mold cavity. A method for producing a film comprises the steps of (a) providing a thermoplastic polymer composition as described above, (b) melting the thermoplastic polymer composition, (c) extruding the molten thermoplastic polymer composition through a slot-shaped die orifice to form a film, (d) cooling the film, and (e) collecting the film.
    Type: Application
    Filed: July 28, 2021
    Publication date: July 28, 2022
    Inventors: Walter Forrister, Xiaoyou Xu, Darin Dotson
  • THERMOPLASTIC POLYMER COMPOSITION AND METHOD FOR MOLDING THE SAME
    Publication number: 20220033629
    Abstract: A thermoplastic polymer composition comprises a polyethylene polymer composition and a salt of bicyclo[2.2.1]heptane-2,3-dicarboxylic acid. The polyethylene polymer composition can have a Melt Relaxation Ratio of 1.5 or greater. A method for molding a thermoplastic polymer composition comprises the steps of (a) providing an apparatus comprising a die and a mold cavity; (b) providing the thermoplastic polymer composition described above; (c) heating the thermoplastic polymer composition to melt the thermoplastic polymer composition; (d) extruding the molten thermoplastic polymer composition through the die to form a parison; (e) capturing the parison in the mold cavity; (f) blowing a pressurized fluid into the parison to inflate the parison and conform it to the interior surface of the mold cavity; (g) allowing the molded article to cool so that the molded article retains its shape; and (h) removing the molded article from the mold cavity.
    Type: Application
    Filed: July 28, 2021
    Publication date: February 3, 2022
    Inventors: Darin Dotson, Xiaoyou Xu, Walter Forrister
  • THERMOPLASTIC POLYMER COMPOSITION AND METHOD FOR MAKING FILMS FROM THE SAME
    Publication number: 20220033599
    Abstract: A thermoplastic polymer composition comprises a polyethylene polymer composition and a salt of bicyclo[2.2.1]heptane-2,3-dicarboxylic acid. The polyethylene polymer composition can have a Melt Relaxation Index of 2 or greater. A method for molding a thermoplastic polymer composition comprises the steps of (a) providing an apparatus comprising a die with an annular orifice, a means for blowing pressurized fluid into a tube exiting the die orifice, and a means for drawing and collecting the tube; (b) providing the thermoplastic polymer composition described above; (c) heating the thermoplastic polymer composition to melt the thermoplastic polymer composition; (d) extruding the molten thermoplastic polymer composition through the die to form a tube; (e) blowing a pressurized fluid into the tube to inflate the tube while simultaneously drawing it; (f) allowing the film to cool; and (g) collecting the film.
    Type: Application
    Filed: July 28, 2021
    Publication date: February 3, 2022
    Inventors: Darin Dotson, Xiaoyou Xu, Walter Forrister