Patents by Inventor Juichi Sakurada

Juichi Sakurada 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).

  • Method for disintegrating mica flakes and apparatus used therefor
    Patent number: 4165839
    Abstract: Mica flakes are disintegrated to mica scales having a diameter of 10 mm or less and a ratio of diameter/thickness of 100-1000 by using an apparatus and a method comprising bringing about coarse size reduction followed by size reduction of the mica flakes by high-pressure jets of water, if desired together with high-pressure jets of gas, separating mica scales from mica flakes by vertical classification followed by horizontal classification, and taking out the mica scales as a slurry while recycling nondisintegrated mica flakes to size reduction. The slurry of mica scales is used for making mica paper.
    Type: Grant
    Filed: April 19, 1978
    Date of Patent: August 28, 1979
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Hideji Kuwajima, Hirofumi Mizoguchi, Juichi Sakurada, Takeyoshi Watanabe