Patents by Inventor Katsuyoshi Niikura

Katsuyoshi Niikura 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).

  • Binder fiber and nonwoven fabrics using the fiber
    Patent number: 5646077
    Abstract: A nonwoven fabric having good heat bondability which is suitable for use as interlining and cushioning material, and a binder fiber for use in such nonwoven fabric. The binder fiber is a polyester copolymer which includes .epsilon.-caprolacton as a polyester component and has a melting point of not less than 100.degree. C. In the nonwoven fabric, principal fibers are bonded by the binder fiber. The nonwoven fabric has soft feel and is highly resistant to flattening during prolonged use or while in use under high temperature atmosphere.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: July 8, 1997
    Assignee: Unitika Ltd
    Inventors: Nobuhiro Matsunaga, Katsuyoshi Niikura
  • Binder fiber and nonwoven fabrics using the fiber
    Patent number: 5554442
    Abstract: A nonwoven fabric having good heat bondability which is suitable for use as interlining and cushioning material, and a binder fiber for use in such nonwoven fabric. The binder fiber is a polyester copolymer which includes .epsilon.-caprolactone as a polyester component and has a melting point of not less than 100.degree. C. In the nonwoven fabric, principal fibers are bonded by the binder fiber. The nonwoven fabric has soft feel and is highly resistant to flattening during prolonged use or while in use under high temperature atmosphere.
    Type: Grant
    Filed: February 26, 1996
    Date of Patent: September 10, 1996
    Assignee: Unitika Ltd.
    Inventors: Nobuhiro Matsunaga, Katsuyoshi Niikura