Patents by Inventor Hiroji Wakisaka

Hiroji Wakisaka 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).

  • Non-woven fabric, and sheet and artificial leather produced from the same
    Patent number: 6566287
    Abstract: A non-woven fabric having such a structure that fine fibers having a small fineness are entangled with one another and a sheet obtained by impregnating the non-woven fabric with an elastic polymer satisfy the following requirements: the fine fibers should be obtained by splitting a strippable and splittable composite short fiber comprising at least two components; the fine fibers should have a monofilament size of 0.01 to 0.5 denier; the fine fibers should form a fine non-woven fabric structure that they are entangled with one another at random; the apparent density should be 0.18 to 0.
    Type: Grant
    Filed: May 1, 2000
    Date of Patent: May 20, 2003
    Assignees: Teijin Limited, Daiwabo Co., Ltd.
    Inventors: Masahisa Mimura, Hideki Nitta, Nobuo Ohkawa, Kimio Nakamura, Yoshiji Usui, Hiroji Wakisaka, Akihiro Imoto