Patents by Inventor Heqing Huang

Heqing Huang 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).

  • Low Molecular Weight Dry Powder Polymer for Use as Paper-Making Dry Strength Agent
    Publication number: 20170355846
    Abstract: The invention provides an associative polymer, a powder, and a process for making a powder comprising, networking one or more associative polymer(s) and one or more optional surfactant(s) to form a wet gel, and forming a powder from the wet gel, wherein the associative polymer(s) have a weight average molecular weight of from about 10 kDa to about 2,000 kDa.
    Type: Application
    Filed: June 12, 2017
    Publication date: December 14, 2017
    Applicant: Ecolab USA Inc.
    Inventors: Heqing Huang, David Jordan, Robert M. Lowe, Jeffrey Cramm, Weiguo Cheng, Mingli Wei
  • METHODS OF MAKING ACRYLAMIDE-ACRYLIC ACID COPOLYMERS
    Publication number: 20160376390
    Abstract: A method of making acrylamide-acrylic acid copolymers in water-in-oil latices is described. The method results in a copolymer having randomly distributed carboxylate functionalities and is suitable for ionic crosslinking. The copolymers and their ionically crosslinked counterparts are useful for enhanced oil recovery processes.
    Type: Application
    Filed: June 23, 2016
    Publication date: December 29, 2016
    Inventors: Stephen Marrou, Xiangyang Zhu, Heqing Huang
  • HIGHLY RANDOM ACRYLAMIDE-ACRYLIC ACID COPOLYMERS
    Publication number: 20160376389
    Abstract: Highly random acrylamide-acrylic acid copolymers are described. Ionic crosslinking of the highly random copolymers in dilute solution results in improved viscosity and gel strength compared to copolymers prepared by conventional methods. The ionically crosslinked copolymers are useful in enhanced oil recovery processes.
    Type: Application
    Filed: June 23, 2016
    Publication date: December 29, 2016
    Inventors: Stephen Marrou, Xiangyang Zhu, Heqing Huang