Patents by Inventor Kejia Yang

Kejia Yang 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).

  • Patent number: 11448033
    Abstract: A wellbore isolation device includes a mandrel, a sealing element disposed around at least a portion of the mandrel, and a delay coating disposed on at least a portion of an outer surface of the sealing element. The sealing element includes a swellable material and the delay coating covers a cross-linked polymer. The delay coating is configured to swell or degrade in a wellbore fluid.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: September 20, 2022
    Assignees: HALLIBURTON ENERGY SERVICES, INC., BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
    Inventors: Michael Linley Fripp, Xiaoguang Allan Zhong, Kejia Yang, Walter Voit, Nelson Yan Loo Lee, Yong Dai Tan, Bing Hong Chee, Ee Wen Wong
  • Publication number: 20210363304
    Abstract: A photocurable resin composition for forming an optically clear film. The photocurable resin composition includes a polyfunctional thiol monomer comprising 2 thiol functional groups, a polyfunctional (meth)acrylate monomer comprising 2 (meth)acryloyl functional groups, a photo-initiator present in a concentration of about 1 parts per hundred (phr) or less, a sterically hindered phenolic antioxidant present in a concentration of about 5 phr or less, and a phosphite antioxidant present in a concentration of about 5 phr or less.
    Type: Application
    Filed: December 9, 2019
    Publication date: November 25, 2021
    Inventors: Kejia YANG, Radu REIT
  • Publication number: 20210323217
    Abstract: Provided are methods and systems for manufacturing and using heat-shrink elastomeric. An example method of manufacturing a heat-shrink elastomeric element comprises providing a thermoplastic elastomeric element having a first shape; modifying the thermoplastic elastomeric element to produce a thermoset elastomeric element having the first shape; heating the thermoset elastomeric element to a temperature of at least the glass transition temperature of the thermoset elastomeric element; adjusting the first shape of the thermoset elastomeric element to produce a second shape with at least one dimension greater than that of the first shape; and cooling the thermoset elastomeric element to a temperature below that of the glass transition temperature of the thermoset elastomeric element to produce the heat-shrink elastomeric element.
    Type: Application
    Filed: June 23, 2021
    Publication date: October 21, 2021
    Inventors: Michael L. FRIPP, Kejia YANG, Radu REIT, Benjamin LUND, Walter VOIT
  • Patent number: 11065807
    Abstract: Provided are methods and systems for manufacturing and using heat-shrink elastomeric. An example method of manufacturing a heat-shrink elastomeric element comprises providing a thermoplastic elastomeric element having a first shape; modifying the thermoplastic elastomeric element to produce a thermoset elastomeric element having the first shape; heating the thermoset elastomeric element to a temperature of at least the glass transition temperature of the thermoset elastomeric element; adjusting the first shape of the thermoset elastomeric element to produce a second shape with at least one dimension greater than that of the first shape; and cooling the thermoset elastomeric element to a temperature below that of the glass transition temperature of the thermoset elastomeric element to produce the heat-shrink elastomeric element.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: July 20, 2021
    Assignees: The University of Texas System Board of Regents, Halliburton Energy Services, Inc.
    Inventors: Michael L. Fripp, Kejia Yang, Radu Reit, Benjamin Lund, Walter Voit
  • Publication number: 20210156220
    Abstract: A wellbore isolation device includes a mandrel, a sealing element disposed around at least a portion of the mandrel, and a delay coating disposed on at least a portion of an outer surface of the sealing element. The sealing element includes a swellable material and the delay coating covers a cross-linked polymer. The delay coating is configured to swell or degrade in a wellbore fluid.
    Type: Application
    Filed: April 5, 2019
    Publication date: May 27, 2021
    Inventors: Michael Linley FRIPP, Xiaoguang Allan ZHONG, Kejia YANG, Walter VOIT, Nelson Yan Loo LEE, Yong Dai TAN, Bing Hong CHEE, Ee Wen WONG
  • Publication number: 20190077070
    Abstract: Provided are methods and systems for manufacturing and using heat-shrink elastomeric. An example method of manufacturing a heat-shrink elastomeric element comprises providing a thermoplastic elastomeric element having a first shape; modifying the thermoplastic elastomeric element to produce a thermoset elastomeric element having the first shape; heating the thermoset elastomeric element to a temperature of at least the glass transition temperature of the thermoset elastomeric element; adjusting the first shape of the thermoset elastomeric element to produce a second shape with at least one dimension greater than that of the first shape; and cooling the thermoset elastomeric element to a temperature below that of the glass transition temperature of the thermoset elastomeric element to produce the heat-shrink elastomeric element.
    Type: Application
    Filed: April 13, 2017
    Publication date: March 14, 2019
    Inventors: Michael L. FRIPP, Kejia YANG, Radu REIT, Benjamin LUND, Walter VOIT
  • Publication number: 20180051113
    Abstract: A melt-processable thermoset polymer comprising monomers cross-linked together by furan-maleimide Diels Alder adduct covalent bonds. At least about 1 percent of the furan-maleimide Diels Alder adduct covalent bonds of the polymer are de-cross-linked by a retro Diels Alder reaction at a temperature in a range from about 90° C. and less than about 300° C. A method of synthesizing, a filament fabrication printer for printing, and a method of printing, the melt-processable thermoset polymer are also disclosed.
    Type: Application
    Filed: March 13, 2017
    Publication date: February 22, 2018
    Inventors: Kejia Yang, Benjamin R. Lund, Ronald Smaldone, Walter Voit