Patents by Inventor Yuelong Liu

Yuelong Liu 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).

  • Temporary plugging agent and preparation method thereof, and method for temporary plugging and fracturing of high-temperature reservoir
    Patent number: 11945995
    Abstract: Disclosed are a temporary plugging agent and a preparation method thereof, and a method for temporary plugging and fracturing of a high-temperature reservoir. The temporary plugging agent includes the following components in mass fractions: acrylamide 5%, composite crosslinking agent 1%, laponite 1%, ammonium persulfate 0.1% and water 92.9%.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: April 2, 2024
    Assignee: CHINA UNIVERSITY OF PETROLEUM
    Inventors: Tiankui Guo, Yuelong Zhang, Zengbao Wang, Ning Qi, Mingliang Luo, Feipeng Wu, Ming Chen, Xiaoqiang Liu, Jiwei Wang, Xiaozhi Wang, Yuanzhi Gong
  • Uniform distribution of absorbents in a thermoplastic web
    Publication number: 20030114066
    Abstract: A web of thermoplastic multicomponent substantially continuous fibers is thoroughly and evenly mixed with absorbent materials prior to deposition on the forming wire to result in superior adherence of the absorbents to the thermoplastic components and hence result in superior performance of the web. The multicomponent fibers have a low melting point sheath which can be fully activated to melt and wet the absorbent particles. The web can then be densified and cooled, securing the absorbents to the web with hardened flow joints and enabling the web to carry high loadings of absorbent while maintaining good web integrity.
    Type: Application
    Filed: December 13, 2001
    Publication date: June 19, 2003
    Inventors: Darryl Franklin Clark, Yuelong Liu, David Michael Matela
  • Layer materials treated with surfacant-modified chelating agents
    Patent number: 6509284
    Abstract: A thermoplastic layer material has at least one odor-reducing surface which is wettable to aqueous liquids and capable of controlling a wide variety of malodors. The thermoplastic layer material is treated with a surfactant-modified chelating agent prepared by mixing or chemically reacting an odor-control chelating agent with a surfactant-producing compound. The layer material thus treated can be used in a wide variety of personal care and medical absorbent products, as well as other applications.
    Type: Grant
    Filed: December 28, 1999
    Date of Patent: January 21, 2003
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Roger Bradshaw Quincy, III, Garry Roland Woltman, Yuelong Liu, Patricia Hsiaoyin Hwang
  • Layer materials treated with surfactant-modified hydrophobic odor control agents
    Patent number: 6479150
    Abstract: A treated layer material has at least one hydrophilic, odor-absorbing surface which is wettable to aqueous liquids and capable of controlling a wide variety of malodors. The layer material is treated with a hydrophilic surfactant-modified odor control agent prepared by mixing or chemically reacting a hydrophobic odor control agent with a surfactant or surfactant-producing compound. The layer material thus treated can be used in a wide variety of personal care and medical absorbent products, as well as other applications.
    Type: Grant
    Filed: December 28, 1999
    Date of Patent: November 12, 2002
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Yuelong Liu, Roger Bradshaw Quincy, III, Garry Roland Woltman
  • Water permeable porous layer materials treated with surfactant-modified cyclodextrins
    Patent number: 6433243
    Abstract: A thermoplastic porous water-permeable layer material has at least one odor-reducing surface which is wettable to aqueous liquids and capable of controlling a wide variety of malodors. The thermoplastic water-permeable layer material is treated with a surfactant-modified cyclodextrin prepared by mixing or chemically reacting a cyclodextrin-based odor absorbing material with a surfactant-producing compound. The layer material thus treated can be used in a wide variety of personal care and medical absorbent products, as well as other applications.
    Type: Grant
    Filed: December 28, 1999
    Date of Patent: August 13, 2002
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Garry Roland Woltman, Yuelong Liu, Roger Bradshaw Quincy, III