Patents by Inventor Hitomi Muraoka

Hitomi Muraoka 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).

  • Publication number: 20120168073
    Abstract: Provided are a device for producing a sheet structure including a flexible sheet and a structure formed on the sheet whereby the sheet structure can be easily produced and a method for producing the sheet structure. The production device 1 includes: a table 10 having in a surface thereof a holding region 12; a formation mechanism 31 for forming a structure 2b; a holding mechanism 25 for holding a sheet 2a on the holding region 12; and a control unit 40. The holding mechanism 25 includes: porous materials 14b and 15b provided so that they are at least partly located within the holding region 12 and having interconnected cells; a negative-pressure generating mechanism 17; and a positive-pressure generating mechanism 20. The control unit 40 allows the negative-pressure generating mechanism 17 to generate a negative pressure to hold the sheet 2a, then allows the formation mechanism 31 to form the structure 2b, and then allows the positive-pressure generating mechanism 20 to generate a positive pressure.
    Type: Application
    Filed: August 18, 2010
    Publication date: July 5, 2012
    Inventors: Masahiko Gotoh, Yasushi Nakata, Hitomi Muraoka, Minoru Nakata
  • Patent number: 6958184
    Abstract: A fire-resistant sheet-like molded article comprising a resin composition and having the relationship between the initial thickness t (mm) and temperature difference ?T(° C.) between one side and the reverse side after heating of said one side at 500° C. for 1 hour as represented by: ?T?0.015t4?0.298t3+1.566t2+30.151t, and having the initial bulk density at 25° C. of 0.8 to 8.0 g/cm3 and the bulk density after 1 hour of heating at 500° C. of 0.05 to 0.5 g/cm3 is provided along with a method of fabricating a fire-resistant structural steel and fire-resistant wall.
    Type: Grant
    Filed: April 2, 2002
    Date of Patent: October 25, 2005
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Masaki Tono, Bunji Yamaguchi, Kazuyuki Yahara, Hitomi Muraoka, Norio Numata
  • Publication number: 20030008119
    Abstract: A fire-resistant sheet-like molded article comprising a resin composition and having the relationship between the initial thickness t (mm) and temperature difference &Dgr;T(° C.) between one side and the reverse side after heating of said one side at 500° C.
    Type: Application
    Filed: April 2, 2002
    Publication date: January 9, 2003
    Inventors: Masaki Tono, Bunji Yamaguchi, Kazuyuki Yahara, Hitomi Muraoka, Norio Numata
  • Patent number: 6472070
    Abstract: The present invention is a fire-resistant paint containing an epoxy resin, a hardener, and an inorganic filler wherein {circle around (1)} for the total of 100 weight parts of the epoxy resin and the hardener, {circle around (2)} 200-500 weight parts of the inorganic filler, chosen from a group consisting of neutralized thermally expandable graphite, metal carbonate, and a hydrated inorganic compound is contained; {circle around (3)} for the inorganic filler, at least 15-400 weight parts of neutralized thermally expandable graphite is contained; and {circle around (4)} the viscosity of the fire-resistant paint is 1-1,000 ps as measured by a B-type viscometer. The fire-resistant paint of the present invention has particularly remarkable fire resistance, and can be used in a wide range of applications.
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: October 29, 2002
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Hitomi Muraoka, Masaki Tono, Kazuhiro Okada
  • Patent number: 6410122
    Abstract: A fire-resistant sheet-like molded article having flame resistance and capable of producing good fire-resisting properties as the result of residues after combustion having sufficient shape-retaining property and, further, having good workability, a fire-resistant laminate for covering structural steels and a fire-resistant structural material for walls in which said molded article is used as well as a method of fabricating a fire-resistant structural steel and a fire-resistant wall. A fire resistant sheet-like molded article comprising a resin composition and having the-relationship between the initial thickness t (mm) and temperature difference &Dgr;T (° C.) between one side and the reverse side after heating of said one side at 500° C. for 1 hour as represented by: &Dgr;T≧0.015t4−0.298t3+1.566t2+30.151t, and having the initial bulk density at 25° C. of 0.8 to 2.0 g/cm3 and the bulk density after 1 hour of heating at 500° C. of 0.05 to 0.5 g/cm3.
    Type: Grant
    Filed: September 2, 1999
    Date of Patent: June 25, 2002
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Masaki Tono, Bunji Yamaguchi, Kazuyuki Yahara, Hitomi Muraoka, Norio Numata