Patents by Inventor Hirosi Nanbu

Hirosi Nanbu 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).

  • Information recording medium and adhesive composition therefor
    Patent number: 5290877
    Abstract: An information recording medium formed by adhering, with an adhesive composition, two disk substrates to each other, at least one of the two disk substrates having a recording layer on at least one surface of a transparent resin substrate thereof and the adhesive composition comprising(1) the following components:(A) an .alpha.-olefin polymer,(B) an ethylene/(meth)acrylate copolymer,(C) a styrene-type polymer, and(D) a tackifierprovided that at least one of the components (A) to (D) is modified with an unsaturated carboxylic acid or a derivative thereof, or(2) the following components:(A) an .alpha.-olefin polymer,(C) a styrene-type polymer,(D) a tackifier, and(E) fine filler particles.
    Type: Grant
    Filed: October 22, 1992
    Date of Patent: March 1, 1994
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Hideo Yamaoka, Mitsuyuki Kuroiwa, Hirosi Nanbu, Akira Todo
  • Information recording medium and adhesive composition therefor
    Patent number: 5188875
    Abstract: An information recording medium formed by adhering, with an adhesive composition, two disk substrates to each other, at least one of the two disk substrates having a recording layer on at least one surface of a transparent resin substrate thereof and the adhesive composition comprising(1) the following components:(A) an .alpha.-olefin polymer,(B) an ethylene/(meth)acrylate copolymer,(C) a styrene-type polymer, and(D) a tackifierprovided that at least one of the components (A) to (D) is modified with an unsaturated carboxylic acid or a derivative thereof, or(2) the following components:(A) an .alpha.-olefin polymer,(C) a styrene-type polymer,(D) a tackifier, and(E) fine filler particles.
    Type: Grant
    Filed: August 24, 1990
    Date of Patent: February 23, 1993
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Hideo Yamaoka, Mitsuyuki Kuroiwa, Hirosi Nanbu, Akira Todo