Patents by Inventor Junji Namba

Junji Namba 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).

  • Shoe soles and method for manufacturing the same
    Patent number: 4151661
    Abstract: A method of manufacturing non-yellowing polyurethane shoe soles which comprises coating a non-yellowing polyurethane composition on the inner surface of a mould for shaping soles, subsequently casting a foamable polyurethane composition into the mould, and curing the compositions, whereby a non-yellowing polyurethane outer layer and a foamed polyurethane sole base are formed and integrally united together to give the shoe sole; and non-yellowing shoe soles thus obtained.
    Type: Grant
    Filed: September 19, 1977
    Date of Patent: May 1, 1979
    Assignee: Nihon Soflan Chemical & Engineering Co. Ltd.
    Inventors: Junji Namba, Shizuo Kageyama