Patents by Inventor Takeji Nakae

Takeji Nakae 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).

  • Fiber reinforced composite materials
    Patent number: 5789073
    Abstract: Tough laminated composite material which comprise (A) long reinforcing fibers, (B) a matrix resin mixed with the long reinforcing fibers and (C1) a resin, preferably in the form of fine resin particles, forming a phase separate from said matrix resin which is localized in inter-layer zones, wherein 90% or more of said resin (C1) is localized in inter-layer zones and/or wherein the border length factor in the inter-layer zones is 2.5 or more and prepregs used to form the composite materials.
    Type: Grant
    Filed: January 15, 1993
    Date of Patent: August 4, 1998
    Assignee: Toray Industries, Inc.
    Inventors: Nobuyuki Odagiri, Shigeru Suzue, Akimitsu Matsusaki, Hajime Kishi, Takeji Nakae
  • Electrode and secondary battery using the same
    Patent number: 5677084
    Abstract: The invention relates to an electrode suitable for a chargeable/dischargeable secondary battery in which a carbonaceous material capable of doping and dedoping of lithium ions is used as a negative electrode active material, wherein carbon fibers are used as the carbonaceous material in a form of an uni-directionally arranged body or in combination of electrically conductive foil or fibers, and further relates to a secondary battery using the electrode. The invention enables to provide a secondary battery having high capacitance and high outputtng property.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: October 14, 1997
    Assignee: Toray Industries, Inc.
    Inventors: Jun Tsukamoto, Takeji Nakae, Tatsuhiko Suzuki, Mikio Nii, Masayuki Kidai
  • Fiber reinforced composite materials having resin practice inter-layer zones
    Patent number: 5028478
    Abstract: Tough laminated composite material which comprise (A) long reinforcing fibers, (B) a matrix resin mixed with the long reinforcing fibers and (C1) a resin, preferably in the form of fine resin particles, forming a phase separate from said matrix resin which is localized in inter-layer zones, wherein 90% or more of said resin (C1) is localized in inter-layer zones and/or wherein the border length factor in the inter-layer zones is 2.5 or more and prepegs used to form the composite materials.
    Type: Grant
    Filed: December 24, 1987
    Date of Patent: July 2, 1991
    Assignee: Troy Industries, Inc.
    Inventors: Nobuyuki Odagiri, Shigeru Suzue, Hajime Kishi, Takeji Nakae, Akimitsu Matsusaki