Patents by Inventor Haoguang WEI

Haoguang WEI 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 HAVING DISPERSING FUNCTION, POLYCARBOXYLIC ACID CEMENT DISPERSANT, PREPARATION METHOD THEREFOR AND USE THEREOF
    Publication number: 20230391941
    Abstract: A polymer having a dispersing function, a preparation method therefor and use thereof as a cement dispersant are provided. The polymer has a structural unit (a), a structural unit (b) and a structural unit (c). The structural unit (a) is provided by an unsaturated polyether, the structural unit (b) is provided by an unsaturated acid and/or a salt thereof and/or an anhydride thereof, and the structural unit (c) is provided by a silane and/or siloxane having a polymerizable group and no less than five carbon atoms. The molar ratio of the structural unit (a), the structural unit (b) and the structural unit (c) is 1:(1-20):(0.01-0.5); and the polymer has a weight average molecular weight of 20,000-90,000 g/mol.
    Type: Application
    Filed: August 13, 2021
    Publication date: December 7, 2023
    Inventors: Xia MIAO, Shiming ZHOU, Haoguang WEI, Guangguo YANG, Lishuang WANG, Qichun WANG, Mu WANG, Xiaojing WANG, Min ZENG, Jian LIU, Xiaojiang LI, Xuepeng WU, Haoya LIU
  • POLYMER HAVING DISPERSING FUNCTION, OIL WELL CEMENT DISPERSANT, AND PREPARATION METHOD THEREFOR AND USE THEREOF
    Publication number: 20230286862
    Abstract: A polymer having a dispersing function, a preparation method therefor, and a use thereof as a cement dispersant are provided. The polymer has a structural unit a, a structural unit b, a structural unit c and a structural unit d. The structural unit a is provided by an unsaturated polyether and/or polyester, the structural unit b is provided by an unsaturated carboxylic acid or an anhydride or salt thereof, the structural unit c is provided by a silane and/or siloxane containing a polymerizable group, and the structural unit d is provided by an unsaturated sulfonic acid or a salt thereof. The molar ratio of the structural unit a to the structural unit d is 1:(5-15) and the polymer has a weight average molecular weight of 20,000 to 120,000. The polymer can be used as an oil well cement dispersant.
    Type: Application
    Filed: August 13, 2021
    Publication date: September 14, 2023
    Inventors: Shiming ZHOU, Xia MIAO, Guangguo YANG, Haoguang WEI, Peiqing LU, Jingnan XIAO, Hongqi YANG, Rengguang LIU, Lei CHEN, Lishuang WANG, Laiyu SANG, Jinkai ZHANG, Yongtao CHU