Patents by Inventor Tsuneo Igarashi

Tsuneo Igarashi 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).

  • Patent number: 6607995
    Abstract: A lining cloth of a woven fabric in which the warp yarn comprises either of polyester filamentary yarn or cellulosic filamentary yarn and the filling yarn comprises either a false-twisted polyester filamentary yarn, a raw filamentary yarn or a cellulosic filamentary yarn, characterized in that an elongation in the filling-wise direction of the woven fabric is in a range from 5% to 12%, a coefficient of dynamic friction on the surface of the woven fabric is in a range from 0.20 to 0.45, and a filling-wise crimp index value of the woven fabric as defined by the following formula (1) is in a range from 0.003 to 0.013: Crimp ratio of the filling yarn/{warp density×(warp fineness)1/2}  (1) The lining cloth according to the present invention is soft in touch, excellent in slipperiness, resistant to seam slippage and free from wearing pressure. The lining cloth is suitably used as a lining for a skirt which is otherwise liable to ride up.
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: August 19, 2003
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Hisaharu Takeuchi, Tsuneo Igarashi, Hiroyuki Mizuki
  • Patent number: 5770313
    Abstract: The present invention relates to a novel composite material, that is, a prepreg, obtained by bonding a film (1) comprised of an organic polymer having substantially no melting point and having a high modulus of 700 kg/mm.sup.3 or more and a high strength of 35 kg/mm.sup.2 or more and a resin layer (2) and/or fiber-reinforced layer (3), a composite molded body, and a method of manufacturing a composite molded body.The composite molded body obtained by bonding the film (1) and the resin layer (2) of the present invention has superior strength, excellent pliability, and large toughness in all directions. Further, the composite molded body obtained by bonding the film (1) and the fiber-reinforced resin layer (3) has both an extremely large impact resistance which could never be obtained with conventional molded bodies and also a strength and modulus greater than in the past. The molded body can be suitably used for aerospace equipment, sports goods, leisure goods, etc.
    Type: Grant
    Filed: September 6, 1996
    Date of Patent: June 23, 1998
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Goro Furumoto, Takashi Fujiwara, Tsuneo Igarashi
  • Patent number: 5597631
    Abstract: The present invention relates to a novel composite material, that is, a prepreg, obtained by bonding a film (1) comprised of an organic polymer having substantially no melting point and having a high modulus of 700 kg/mm.sup.2 or more and a high strength of 35 kg/mm.sup.2 or more and a resin layer (2) and/or fiber-reinforced layer (3), a composite molded body, a method of manufacturing a composite molded body.The composite molded body obtained by bonding the film (1) and the resin layer (2) of the present invention has superior strength, excellent pliability, and large toughness in all directions. Further, the composite molded body obtained by bonding the film (1) and the fiber-reinforced resin layer (3) has both an extremely large impact resistance which could never be obtained with conventional molded bodies and also a strength and modulus greater than in the past. The molded body can be suitably used for aerospace equipment, sports goods, leisure goods, etc.
    Type: Grant
    Filed: February 12, 1993
    Date of Patent: January 28, 1997
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Goro Furumoto, Takashi Fujiwara, Tsuneo Igarashi
  • Patent number: 3962183
    Abstract: Films having good dimensional stability and practically no tendency of fibrillation and also other superior mechanical properties can be obtained easily and at a high production speed by stretching a layer of a substantially amorphous polymer consisting mainly of polyethylene-1,2-diphenoxyethane-4,4'-dicarboxylate at a temperature in the range from Tg to 100.degree.C (wherein Tg is a glass transition point) in the longitudinal direction to 1.5 to 3 times the original length and further stretching the resulting film at a high temperature of 150.degree.C or higher and a high stretching velocity 40000% per minute or higher in the longitudinal direction to give a total stretching ratio of 3.1 times or more.
    Type: Grant
    Filed: March 5, 1974
    Date of Patent: June 8, 1976
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Mitsuo Kohno, Tsuneo Igarashi, Minoru Nomura