Patents by Inventor Setsuo Fukuhara

Setsuo Fukuhara 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).

  • Synthetic fibers having uneven surfaces method for melt-spinning
    Patent number: 4970042
    Abstract: A synthetic fiber having an uneven surface structure consisting of wrinkles having ridges and recesses of the surface of the fiber and not presenting specular luster, which may be used, for example, as artificial hair for wigs, can be produced easily and stably by melt-spinning a starting synthetic resin such as nylon and passing the spun monofilament through a cooling bath at a temperature not lower than 30.degree. C. for a period of time sufficient for developing wrinkles in its surface. Inclusion of a pigment such as carbon black in an appropriate amount in the starting material is effective in providing dense distribution of wrinkles.
    Type: Grant
    Filed: August 8, 1989
    Date of Patent: November 13, 1990
    Assignee: Aderans Co., Ltd.
    Inventors: Hiroshi Kakiuchi, Setsuo Fukuhara, Michinobu Fujiwara, Hiroshi Maeda, Yutaka Shirakashi, Osamu Asakura, Yoshihiro Yoneda, Tetsuo Noda, Naoyuki Fujita
  • Synthetic fibers having uneven surfaces and a method of producing same
    Patent number: 4792489
    Abstract: A synthetic fiber having an uneven surface structure consisting of wrinkles having ridges and recesses of the surface of the fiber and not presenting specular luster, which may be used, for example, as artificial hair for wigs, can be produced easily and stably by melt-spinning a starting synthetic resin such as nylon and passing the spun mono-filament through a cooling bath at a temperature not lower than 30.degree. C. for a period of time sufficient for developing wrinkles in its surface. Inclusion of a pigment such as carbon black in an appropriate amount in the starting material is effective in providing dense distribution of wrinkles.
    Type: Grant
    Filed: December 15, 1986
    Date of Patent: December 20, 1988
    Assignee: Aderans Co., Ltd.
    Inventors: Hiroshi Kakiuchi, Setsuo Fukuhara, Michinobu Fujiwara, Hiroshi Maeda, Yutaka Shirakashi, Osamu Asakura, Yoshihiro Yoneda, Tetsuo Noda, Naoyuki Fujita