Patents by Inventor Yoshisuke Kamei

Yoshisuke Kamei 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).

  • Composite fibers, water-absorbing material using the composite fibers as a base material and method for producing the same
    Patent number: 5143786
    Abstract: The present invention uses, as a base material, a multi-layer film comprising more than two layers and formed from thermoplastic resins different in melting point from one another. A sectional construction of the multi-layer film or a tape obtained from the multi-layer film is applied to a sectional construction of a fibre without modification, the multi-layer film or tape being formed into the fibre. The invention provides a composite fibre which is much more excellent as compared to a conventional heat adhesive composite fibre by melt spinning, a water-absorbing material using the composite fibre as a base material and a method for the production of the same by the stated simple means.
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: September 1, 1992
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Toyoaki Tanaka, Akira Nakamura, Yoshisuke Kamei, Akihiro Hashimoto
  • Composite fibres, water-absorbing material using the composite fibres as a base material and method for producing the same
    Patent number: 5071705
    Abstract: The present invention uses, as a base material, a multi-layer film comprising more than two layers and formed from thermoplastic resins different in melting point from one another. A sectional construction of the multi-layer film or a tape obtained from the multi-layer film is applied to a sectional construction of a fibre without modification, the multi-layer film or tape being formed into the fibre. The invention provides a composite fibre which is much more excellent as compared to a conventional heat adhesive composite fibre by melt spinning, a water-absorbing material using the composite fibre as a base material and a method for the production of the same by the stated simple means.
    Type: Grant
    Filed: June 29, 1987
    Date of Patent: December 10, 1991
    Assignee: Showa Denko K.K.
    Inventors: Toyoaki Tanaka, Akira Nakamura, Yoshisuke Kamei, Akihiro Hashimoto