Patents by Inventor Eiji Senoue

Eiji Senoue 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).

  • Carbon fiber-reinforced polimide resin composition
    Patent number: 5650463
    Abstract: Moldable polyimide resin composition which has melt-flowability and excellent processability in addition to essential heat-resistant of polyimide and comprises an aromatic bisimide compound and polyimide to resin. A further aspects relates to, a carbon fiber reinforced polyimide resin composition which has excellent mechanical strengths and comprises a carbon fiber coated with aromatic bisimide compound on the surface and the polyimide to resin, A still further aspect relates to and a novel bisimide compound which is very useful as the aromatic bisimide compound in the composition.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 22, 1997
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Masahiro Ohta, Akio Matsuyama, Eiji Senoue, Fumiaki Kuwano, Osamu Yasui, Tadashi Kobayashi
  • Bisimide compounds, polyimide resin composition prepared therefrom, and carbon fiber-reinforced polyimide resin composition
    Patent number: 5554765
    Abstract: A moldable polyimide resin composition which has melt-flowability and excellent processability in addition to essential heat-resistant of polyimide and comprises an aromatic bisimide compound and polyimide resin. A further aspect relates to a carbon fiber reinforced polyimide resin composition which has excellent mechanical strengths and comprises a carbon fiber coated with aromatic bisimide compound on the surface and the polyimide resin. A still further aspect relates to a novel bisimide compound which is very useful as the aromatic bisimide compound in the composition.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: September 10, 1996
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Masahiro Ohta, Akio Matsuyama, Eiji Senoue, Fumiaki Kuwano, Osamu Yasui, Yasunori Yoshida, Akinori Ryu, Tadashi Kobayashi
  • Bisimide compounds, polyimide resin composition prepared therefrom, and carbon fiber-reinforced polyimide resin composition
    Patent number: 5457154
    Abstract: A moldable polyimide resin composition which has melt-flowability and excellent processability in addition to essential heat-resistant of polyimide and comprises an aromatic bisimide compound and polyimide resin. A further aspect relates to a carbon fiber reinforced polyimide resin composition which has excellent mechanical strengths and comprises a carbon fiber coated with aromatic bisimide compound on the surface and the polyimide resin. A still further aspect relates to a novel bisimide compound which is very useful as the aromatic bisimide compound in the composition.
    Type: Grant
    Filed: November 9, 1992
    Date of Patent: October 10, 1995
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Masahiro Ohta, Akio Matsuyama, Eiji Senoue, Fumiaki Kuwano, Osamu Yasui, Yasunori Yoshida, Akinori Ryu, Tadashi Kobayashi
  • Indigo blue-colored bioabsorbable surgical fibers and production process thereof
    Patent number: 4750910
    Abstract: Blue-colored bioabsorbable surgical fibers are obtained by adding and dispersing a bioabsorbable polymer, which is selected from polyglycolic acid, poly(l-lactic acid) and glycolic acid-l-lactic acid copolymers all of which are useful as surgical fibers, and indigo in a non-aqueous organic solvent having low solubility for the polymer and indigo, heating the resultant dispersion at a temperature below 120.degree. C. to distill off the solvent, thereby to obtain a master batch with the indigo incorporated therein at a high concentration, mixing and kneading the master batch with a fresh supply of the polymer, and then spinning the resultant polymer mixture.
    Type: Grant
    Filed: January 20, 1987
    Date of Patent: June 14, 1988
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Hiroshi Takayanagi, Tadashi Kobayashi, Eiji Senoue, Masao Imai