Patents by Inventor CUIWEI DU

CUIWEI DU 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).

  • Preparation method of low-pH controlled-release intelligent corrosion inhibitor
    Patent number: 10131995
    Abstract: This disclosure relates to a preparation method of a low-pH controlled-release intelligent corrosion inhibitor. The low-pH controlled-release intelligent corrosion inhibitor comprises a hydrogel with low pH responsiveness and a corrosion inhibiting substance having the capacity of corrosion inhibition. That is, a corrosion inhibiting substance is wrapped in a low-pH sensitive hydrogel. The swelling degree of the pH sensitive hydrogel may be changed according to the amounts of monomers and crosslinking agents so as to control the releasing speed of the corrosion inhibiting substance. By the soaking experiment and the measurements of electrochemical polarization curves and alternating impedance spectra, the sensitive and long-lasting features of the low-pH controlled-release intelligent corrosion inhibitor are indicated.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: November 20, 2018
    Assignee: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING
    Inventors: Xiaogang Li, Chaofang Dong, Xuequn Cheng, Cuiwei Du, Kui Xiao
  • Method for preparing stainless reinforcing steel bar resistant to corrosion of chloride ions
    Patent number: 10041164
    Abstract: This present invention provides a method for preparing a stainless reinforcing steel bar resistant to corrosion of chloride ions, and belongs to the technical field of corrosion-resistant materials.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: August 7, 2018
    Assignee: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING
    Inventors: Xiaogang Li, Xuequn Cheng, Chaofang Dong, Cuiwei Du, Dawei Zhang
  • METHOD FOR PREPARING STAINLESS REINFORCING STEEL BAR RESISTANT TO CORROSION OF CHLORIDE IONS
    Publication number: 20170058391
    Abstract: This present invention provides a method for preparing a stainless reinforcing steel bar resistant to corrosion of chloride ions, and belongs to the technical field of corrosion-resistant materials.
    Type: Application
    Filed: March 15, 2016
    Publication date: March 2, 2017
    Inventors: Xiaogang LI, Xuequn CHENG, Chaofang DONG, Cuiwei DU, Dawei ZHANG
  • PREPARATION METHOD OF LOW-PH CONTROLLED-RELEASE INTELLIGENT CORROSION INHIBITOR
    Publication number: 20160208165
    Abstract: This disclosure relates to a preparation method of a low-pH controlled-release intelligent corrosion inhibitor. The low-pH controlled-release intelligent corrosion inhibitor comprises a hydrogel with low pH responsiveness and a corrosion inhibiting substance having the capacity of corrosion inhibition. That is, a corrosion inhibiting substance is wrapped in a low-pH sensitive hydrogel. The swelling degree of the pH sensitive hydrogel may be changed according to the amounts of monomers and crosslinking agents so as to control the releasing speed of the corrosion inhibiting substance. By the soaking experiment and the measurements of electrochemical polarization curves and alternating impedance spectra, the sensitive and long-lasting features of the low-pH controlled-release intelligent corrosion inhibitor are indicated.
    Type: Application
    Filed: January 15, 2016
    Publication date: July 21, 2016
    Inventors: XIAOGANG LI, CHAOFANG DONG, XUEQUN CHENG, CUIWEI DU, KUI XIAO