Patents by Inventor Ji-Guang Li

Ji-Guang Li 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).

  • Dispersing or milling apparatus, and dispersing or milling method using same
    Patent number: 7896267
    Abstract: A material to be treated containing solid particles in a liquid is stirred together with milling media, and irradiated with ultrasonic waves during stirring to finely mill the solid particles to nanometer size and disperse the solid particles in the liquid. The ultrasonic waves create cavitation in the liquid and upon decay of the cavitation, shock waves are produced that cause the solid particles to vigorously collide with one another and with the milling media and these collisions, together with the shearing forces created by collision of the milling media, can produce on a commercial scale nano particles having an average particle size of at most 100 nm.
    Type: Grant
    Filed: February 14, 2008
    Date of Patent: March 1, 2011
    Assignee: National Institute for Materials Science & Inoue Mfg., Inc.
    Inventors: Takamasa Ishigaki, Ji-Guang Li, Kimitoshi Sato, Hidehiro Kamiya, Yoshitaka Inoue, Choji Hatsugai, Takashi Suzuki
  • Dispersing or milling apparatus, and dispersing or milling method using same
    Publication number: 20080197218
    Abstract: A material to be treated containing solid particles in a liquid is stirred together with milling media, and irradiated with ultrasonic waves during stirring to finely mill the solid particles to nanometer size and disperse the solid particles in the liquid. The ultrasonic waves create cavitation in the liquid and upon decay of the cavitation, shock waves are produced that cause the solid particles to vigorously collide with one another and with the milling media and these collisions, together with the shearing forces created by collision of the milling media, can produce on a commercial scale nano particles having an average particle size of at most 100 nm.
    Type: Application
    Filed: February 14, 2008
    Publication date: August 21, 2008
    Inventors: Takamasa Ishigaki, Ji-Guang Li, Kimitoshi Sato, Hidehiro Kamiya, Yoshitaka Inoue, Choji Hatsugai, Takashi Suzuki