Patents by Inventor Jiang CAI

Jiang CAI 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: 11142542
    Abstract: A method for synthesizing sucrose-6-ester includes: (a) in the presence of a polar aprotic solvent, contacting an organic phosphine compound represented by formula I with sucrose and an organic tin compound; (b) removing water to obtain a reaction liquid containing a tin-sucrose adduct; and (c) contacting the reaction liquid containing the tin-sucrose adduct with an acid anhydride compound to prepare a sucrose-6-ester. In formula I, R1, R2, and R3 each are a linear or branched alkyl having 1 to 20 carbon atoms, a cycloalkyl having 3 to 10 carbon atoms, or an aryl having 6 to 10 carbon atoms; moreover, the R1, R2, and R3 are identical groups, partially identical groups, or different groups from each other. According to the method, the reaction conversion rate and selectivity are greatly improved; moreover, it is easy to realize industrial application.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: October 12, 2021
    Assignees: Zhejiang Nhu Company Ltd., Shandong Nhu Fine Chemical Science and Technology Company Ltd.
    Inventors: Yougui Zhou, Jiang Cai, Kaifeng Ma, Yugang Wang, Xiaoqiao Wei, Yunhan Yang
  • Publication number: 20210002317
    Abstract: A method for synthesizing sucrose-6-ester includes: (a) in the presence of a polar aprotic solvent, contacting an organic phosphine compound represented by formula I with sucrose and an organic tin compound; (b) removing water to obtain a reaction liquid containing a tin-sucrose adduct; and (c) contacting the reaction liquid containing the tin-sucrose adduct with an acid anhydride compound to prepare a sucrose-6-ester. In formula I, R1, R2, and R3 each are a linear or branched alkyl having 1 to 20 carbon atoms, a cycloalkyl having 3 to 10 carbon atoms, or an aryl having 6 to 10 carbon atoms; moreover, the R1, R2, and R3 are identical groups, partially identical groups, or different groups from each other. According to the method, the reaction conversion rate and selectivity are greatly improved; moreover, it is easy to realize industrial application.
    Type: Application
    Filed: April 24, 2019
    Publication date: January 7, 2021
    Inventors: Yougui ZHOU, Jiang CAI, Kaifeng MA, Yugang WANG, Xiaoqiao WEI, Yunhan YANG
  • Patent number: 6929525
    Abstract: A swinging decorative attachment comprising a base having at least one rack and one boring allowing airflow through the base; two swinging means, both having a wheel-shaped connector on the first end of said swinging means, connecting with the edge of said base, forming a wheel gear respectively, to which two wheel gears connect each other; a fan module attached on that base; at least one gear module connecting to an axle of said fan module; and a subordinate module connecting said gear module and the second end of one said swinging mean, making said two swinging means pushed and turned mutually, forming open-closed swinging motions. In addition, fragrant materials can be used inside said base. The airflow will bring out the fragrance from said base through said bore, and to spread the fragrance among the room.
    Type: Grant
    Filed: June 9, 2003
    Date of Patent: August 16, 2005
    Inventors: Rong-Chun Lee, Jiang-Cai Lee
  • Publication number: 20040219860
    Abstract: A swinging decorative attachment comprising a base having at least one rack and one boring allowing airflow through the base; two swinging means, both having a wheel-shaped connector on the first end of said swinging means, connecting with the edge of said base, forming a wheel gear respectively, to which two wheel gears connect each other; a fan module attached on that base; at least one gear module connecting to an axle of said fan module; and a subordinate module connecting said gear module and the second end of one said swinging mean, making said two swinging means pushed and turned mutually, forming open-closed swinging motions. In addition, fragrant materials can be used inside said base. The airflow will bring out the fragrance from said base through said bore, and to spread the fragrance among the room.
    Type: Application
    Filed: June 9, 2003
    Publication date: November 4, 2004
    Inventors: Rong-Chun Lee, Jiang-Cai Lee
  • Patent number: D984079
    Type: Grant
    Filed: August 18, 2022
    Date of Patent: April 25, 2023
    Inventor: Jiang Cai
  • Patent number: D993570
    Type: Grant
    Filed: August 17, 2022
    Date of Patent: August 1, 2023
    Inventor: Jiang Cai
  • Patent number: D993571
    Type: Grant
    Filed: August 17, 2022
    Date of Patent: August 1, 2023
    Inventor: Jiang Cai