Patents by Inventor CHIA-FEN LEE

CHIA-FEN LEE 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: 9777125
    Abstract: This invention is related to a method for producing polymer latex particle coated with silver nanoparticles. First, a polymer latex particle suspension is mixed with a silver nitrate solution in a weight ratio of 10:1 to 1:10 at 50° C. to 90° C. for 10 to 120 minutes to form a mixed solution. After the temperature of the mix solution is cooled to 50° C. to 85° C., a sodium citrate solution is added to react with the mixed solution for 10 to 240 minutes to form a polymer latex particle coated with silver nanoparticles, which has antibacterial activity.
    Type: Grant
    Filed: November 27, 2015
    Date of Patent: October 3, 2017
    Assignees: Nerd Skincare Inc., Chia-Fen Lee
    Inventors: Ying-Tung Chen, Chia-Fen Lee, Yu-Syuan Chang, Kuen-Lin Leu
  • Publication number: 20170114191
    Abstract: This invention is related to a method for producing polymer latex particle coated with silver nanoparticles. First, a polymer latex particle suspension is mixed with a silver nitrate solution in a weight ratio of 10:1 to 1:10 at 50° C. to 90° C. for 10 to 120 minutes to form a mixed solution. After the temperature of the mix solution is cooled to 50° C. to 85° C., a sodium citrate solution is added to react with the mixed solution for 10 to 240 minutes to form a polymer latex particle coated with silver nanoparticles, which has antibacterial activity.
    Type: Application
    Filed: November 27, 2015
    Publication date: April 27, 2017
    Inventors: YING-TUNG CHEN, CHIA-FEN LEE, YU-SYUAN CHANG, KUEN-LIN LEU