Patents by Inventor Ryota Koyanagi

Ryota Koyanagi 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).

  • Fabric for fiber-reinforced thermoplastic composite material
    Patent number: 5256475
    Abstract: A fabric for a fiber-reinforced thermoplastic composite material is disclosed, which comprises the warp and the weft wherein the warp comprises reinforcing fiber and the weft comprises high molecular weight grade polyether ether ketone resin yarns and low molecular weight grade polyether ether ketone resin yarns, or wherein the warp comprises reinforcing fiber and at least one of high molecular weight grade polyether ether ketone resin yarns and low molecular weight grade polyether ether ketone resin yarns and the weft comprises reinforcing fiber and at least one of high molecular weight grade polyether ether ketone resin yarns and low molecular weight grade polyethe ether ketone resin yarns. The fabric can be laminated or molded into a product having an excellent toughness and shock resistance in almost the same heating time as the conventional one.
    Type: Grant
    Filed: October 28, 1992
    Date of Patent: October 26, 1993
    Inventors: Ryota Koyanagi, Mikiya Fujii, Shoichi Watanabe, Hirokazu Inoguchi