Patents by Inventor Chee Fei Chin

Chee Fei Chin 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).

  • Polymer dispersion by controlled radical polymerization
    Patent number: 11649400
    Abstract: A polymer dispersion may include a water soluble copolymer, a water soluble salt, a polyol, and water. A method of preparing a polymer dispersion may include controlled radical polymerization. A method of using the polymer dispersion as a friction reducer in oil field processes.
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: May 16, 2023
    Assignee: ENERGY SOLUTIONS (US) LLC
    Inventors: Zhenxing Cheng, Zhihua Zhang, Man Chen, Chee Fei Chin, David James Wilson
  • METHOD FOR CONTROLLING PRODUCTION OF EXCESSIVE WATER AND AQUEOUS FLUIDS IN OIL AND GAS WELLS
    Publication number: 20220275267
    Abstract: Provided are methods for modifying the permeability of subterranean formations for the purposes of selectively reducing excessive production of water and aqueous fluids in oil and gas wells, wherein the methods utilize an emulsion containing a copolymer, which is typically prepared in an aqueous salt media.
    Type: Application
    Filed: July 23, 2019
    Publication date: September 1, 2022
    Applicant: RHODIA OPERATIONS
    Inventors: Chee Fei Chin, Zhihua Zhang, Zhenxing Cheng, Ahmed Rabie, Hoang Van Le
  • POLYMER DISPERSION BY CONTROLLED RADICAL POLYMERIZATION
    Publication number: 20210340436
    Abstract: Disclosed is a polymer dispersion prepared by controlled radical polymerization and a use of the polymer dispersion as a friction reducer in oil field processes.
    Type: Application
    Filed: October 11, 2018
    Publication date: November 4, 2021
    Applicant: RHODIA OPERATIONS
    Inventors: Zhenxing Cheng, Zhihua Zhang, Man Chen, Chee Fei Chin, David James Wilson