Patents by Inventor Shitong Zhu

Shitong Zhu 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).

  • Fluoropolymers to reduce retention of nanosurfactants to carbonate reservoir rock for applications in oil fields
    Patent number: 11066594
    Abstract: Embodiments of the disclosure provide compositions and methods suitable for injection of a nanosurfactant composition into a hydrocarbon-bearing formation for enhanced recovery operations. The nanosurfactant composition includes nanoassemblies that contain a petroleum sulfonate surfactant, mineral oil, a zwitterionic co-surfactant. The nanosurfactant composition also includes a functionalized zwitterionic copolymer present in an aqueous environment.
    Type: Grant
    Filed: August 11, 2020
    Date of Patent: July 20, 2021
    Inventors: Ayrat Gizzatov, Chang Da, Amr Abdel-Fattah, Shitong Zhu
  • FLUOROPOLYMERS TO REDUCE RETENTION OF NANOSURFACTANTS TO CARBONATE RESERVOIR ROCK FOR APPLICATIONS IN OIL FIELDS
    Publication number: 20200369947
    Abstract: Embodiments of the disclosure provide compositions and methods suitable for injection of a nanosurfactant composition into a hydrocarbon-bearing formation for enhanced recovery operations. The nanosurfactant composition includes nanoassemblies that contain a petroleum sulfonate surfactant, mineral oil, a zwitterionic co-surfactant. The nanosurfactant composition also includes a functionalized zwitterionic copolymer present in an aqueous environment.
    Type: Application
    Filed: August 11, 2020
    Publication date: November 26, 2020
    Applicant: SAUDI ARABIAN OIL COMPANY
    Inventors: Ayrat GIZZATOV, Chang DA, Amr ABDEL-FATTAH, Shitong ZHU
  • Protective surface modification system and application to substrates
    Patent number: 7267881
    Abstract: A protective surface modification system employs two separate formulations to enhance visual appearance and in many instances provide abrasion resistance on a surface such as a countertop.
    Type: Grant
    Filed: May 19, 2005
    Date of Patent: September 11, 2007
    Inventors: Rolf Thomas Weberg, Shitong Zhu, Timothy James Sanford, Lawrence J. Simmons
  • Protective surface modification system and application to substrates
    Publication number: 20060263611
    Abstract: A protective surface modification system employs two separate formulations to enhance visual appearance and in many instances provide abrasion resistance on a surface such as a countertop.
    Type: Application
    Filed: May 19, 2005
    Publication date: November 23, 2006
    Inventors: Rolf Weberg, Shitong Zhu, Timothy Sanford, Lawrence Simmons
  • Continuous method for formation of three dimensional burls in a solid surface material
    Patent number: 6773643
    Abstract: A series of three-dimensional burls are formed in a filled-acrylic solid surface material by curing partially mixed steams of acrylic resin casting compositions with defined parameters of viscosity, density and surface tension.
    Type: Grant
    Filed: September 16, 2002
    Date of Patent: August 10, 2004
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Carl P. Beitelshees, Rolf Thomas Weberg, Shitong Zhu, Elizabeth R. Walter
  • Continuous method for formation of three dimensional burls in a solid surface material
    Publication number: 20030071387
    Abstract: A series of three-dimensional burls are formed in a filled-acrylic solid surface material by curing partially mixed steams of acrylic resin casting compositions with defined parameters of viscosity, density and surface tension.
    Type: Application
    Filed: September 16, 2002
    Publication date: April 17, 2003
    Inventors: Carl P. Beitelshees, Rolf T. Weberg, Shitong Zhu, Elizabeth R. Walter