Patents by Inventor Kaijin Chang

Kaijin Chang 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).

  • Recombinant humanized type III collagen microsphere with innovative spatial structure, and design, preparation process and usethereof
    Patent number: 12473350
    Abstract: The present application discloses a recombinant humanized type III collagen microsphere with innovative spatial structure, and its design, preparation process, and use. The gene sequence of humanized type III collagen is designed and constructed, and cut by a cutting enzyme and then cyclized by cyclase, obtaining the recombinant humanized type III collagen microspheres with an innovative spatial structure, without introducing any foreign insertion gene or modification gene. The collagen microsphere of the present application exhibits a long degradation time and good stability and durability and can exert its various biological effects for a long time, which can better adapt to applications in the pharmaceutical and cosmetics industries.
    Type: Grant
    Filed: December 17, 2024
    Date of Patent: November 18, 2025
    Assignee: Nanjing Tzone Biotechnology Co., Ltd.
    Inventors: Yu Jin, Lin Xu, Nianqin Xu, Jinbiao Lu, Dongwu Zhang, Songquan Xu, Kaijin Chang, Mouzhi Liu, Yuan Jiang
  • RECOMBINANT HUMANIZED TYPE III COLLAGEN MICROSPHERE WITH INNOVATIVE SPATIAL STRUCTURE, AND DESIGN, PREPARATION PROCESS AND USETHEREOF
    Publication number: 20250206807
    Abstract: The present application discloses a recombinant humanized type III collagen microsphere with innovative spatial structure, and its design, preparation process, and use. The gene sequence of humanized type III collagen is designed and constructed, and cut by a cutting enzyme and then cyclized by cyclase, obtaining the recombinant humanized type III collagen microspheres with an innovative spatial structure, without introducing any foreign insertion gene or modification gene. The collagen microsphere of the present application exhibits a long degradation time and good stability and durability and can exert its various biological effects for a long time, which can better adapt to applications in the pharmaceutical and cosmetics industries.
    Type: Application
    Filed: December 17, 2024
    Publication date: June 26, 2025
    Inventors: Yu Jin, Lin Xu, Nianqin Xu, Jinbiao Lu, Dongwu Zhang, Songquan Xu, Kaijin Chang, Mouzhi Liu, Yuan Jiang