Patents by Inventor Junji Sakimoto

Junji Sakimoto 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).

  • Tail packing for a slurry pressurized shield
    Patent number: 4209268
    Abstract: A tail packing for a slurry pressurized shield is provided, comprising outer layers of strings and a filter element layer between the outer layers. The outer layers are composed of a number of strings densely arranged in a juxtaposed relation.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: June 24, 1980
    Assignee: Ohbayashi-Gumi, Ltd.
    Inventors: Toshio Fujiwara, Junji Sakimoto, Hisaya Yoshioka