Patents by Inventor Yean-Rong Hwu

Yean-Rong Hwu 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).

  • Synthetic fibers containing photochromic pigment and their preparation
    Patent number: 5422181
    Abstract: Synthetic textiles containing a photochromic pigment. The pigments are prepared by encapsulating a photochromic pigment in a thermoplastic polymer having a high melt flow index, mixed with a primary thermoplastic resin, and extruded at a temperature of less than 250.degree. C. through a spinnerette having a diameter of at least 0.3 mm.
    Type: Grant
    Filed: April 11, 1994
    Date of Patent: June 6, 1995
    Assignee: Industrial Technology Research Institute
    Inventors: Yean-Rong Hwu, Chi-Chung Bai, Li-Chang Tao, Der-Guey Luo, Andrew T. Hu
  • Method of making synthetic fibers containing photochromic pigment
    Patent number: 5213733
    Abstract: Synthetic textiles containing a photochromic pigment. The pigments are prepared by encapsulating a photochromic pigment in a thermoplastic polymer having a high melt flow index, mixed with a primary thermoplastic resin, and extruded at a temperature of less than 250.degree. C. through a spinnerette having a diameter of at least 0.3 ml.
    Type: Grant
    Filed: June 3, 1991
    Date of Patent: May 25, 1993
    Assignee: Industrial Technology Research Institute
    Inventors: Yean-Rong Hwu, Chi-Chung Bai, Li-Chang Tao, Der-Guey Luo, Andrew T. Hu