Patents by Inventor Ryuji Harada

Ryuji Harada 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).

  • Slip-resistant shoe sole
    Publication number: 20090188132
    Abstract: The slip resistant shoe sole 1 of the invention comprises a plurality of ground contact projections 3 formed on the ground contact side of the sole base 2 with a predetermined gap between adjacent ground contact projections 3 in the longitudinal direction of the base 2, the ground contact projections 3 having a V-shaped horizontal cross section, having inclined reinforcements 5 provided at the roots of the ground contact projections 3 on the base 2, and being formed using an elastomeric polymer with a JIS-A hardness of 45 to 80 as measured at 20° C.
    Type: Application
    Filed: February 25, 2005
    Publication date: July 30, 2009
    Applicant: NISSHIN RUBBER Co., LTD
    Inventors: Eiji Fujikawa, Tomohiro Nozaki, Ryuji Harada, Ikumasa Watanabe