Patents by Inventor Patrick Neal Hamilton

Patrick Neal Hamilton 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).

  • Classification process for superabsorbent polymer particles
    Patent number: 11883848
    Abstract: The invention relates to a classification process for superabsorbent polymer particles, comprising classifying the water-absorbent polymer particles in a screen machine under reduced pressure wherein the pressure above the uppermost sieve is from 0 to 4.0 mbar per sieve higher than below the undermost sieve.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: January 30, 2024
    Assignee: BASF SE
    Inventors: Rüdiger Funk, Matthias Weismantel, Monte Alan Peterson, Patrick Neal Hamilton, Ronny De Kaey, Karl Possemiers
  • Superabsorbent complexed with aluminum ions
    Patent number: 11813589
    Abstract: In an improved superabsorbent complexed with aluminum ions, the aluminum ions are applied in the form of an aqueous solution comprising aluminum ions, which has the feature that it comprises aluminum ions in a proportion within the range of 0.5%-15% by weight (converted if appropriate to Al3+), based on the total mass of the solution, and further comprises anions of lactic acid (lactate ions) and phosphoric acid (phosphate ions), where the molar proportion of the lactate ions is within the range of 0.01-2.99 times the molar amount of Al3+ and the molar proportion of the phosphate ions is within the range of 0.01-2.99 times the molar amount of Al3+.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: November 14, 2023
    Assignee: BASF SE
    Inventors: Kristine Hartnagel, Wanthip Poomsuwan, Patrick Neal Hamilton, Norbert Herfert, Thomas Daniel, Olaf Hoeller
  • SUPER ABSORBER
    Publication number: 20210187479
    Abstract: In an improved superabsorbent complexed with aluminum ions, the aluminum ions are applied in the form of an aqueous solution comprising aluminum ions, which has the feature that it comprises aluminum ions in a proportion within the range of 0.5%-15% by weight (converted if appropriate to Al3+), based on the total mass of the solution, and further comprises anions of lactic acid (lactate ions) and phosphoric acid (phosphate ions), where the molar proportion of the lactate ions is within the range of 0.01-2.99 times the molar amount of Al3+ and the molar proportion of the phosphate ions is within the range of 0.01-2.99 times the molar amount of Al3+.
    Type: Application
    Filed: October 31, 2018
    Publication date: June 24, 2021
    Inventors: Kristine Hartnagel, Wanthip Poomsuwan, Patrick Neal Hamilton, Norbert Herfert, Thomas Daniel, Olaf Hoeller
  • CLASSIFICATION PROCESS FOR SUPERABSORBENT POLYMER PARTICLES
    Publication number: 20200147652
    Abstract: The invention relates to a classification process for superabsorbent polymer particles, comprising classifying the water-absorbent polymer particles in a screen machine under reduced pressure wherein the pressure above the uppermost sieve is from 0 to 4.0 mbar per sieve higher than below the undermost sieve.
    Type: Application
    Filed: July 20, 2018
    Publication date: May 14, 2020
    Inventors: Rüdiger Funk, Matthias Weismantel, Monte Alan Peterson, Patrick Neal Hamilton, Ronny De Kaey, Karl Possemiers