Patents by Inventor Shigetoshi Maekawa

Shigetoshi Maekawa 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: 20150023054
    Abstract: A reflective film includes a first section in which a layer including a resin A and a layer including a resin B are alternately laminated in 200 layers or more, and a second section including a resin C which meets at least one of (I) to (III), the sections arranged laminatedly in the thickness direction, wherein relative average reflectance at a wavelength of 400 to 700 nm of light incident upon the first section side arranged laminatedly is 70% or more, and the reflectance of a specular reflection component is 10% or more of the relative average reflectance: (I) voidage in the second section is 5% to 90%; (II) content of inorganic particles in the second section is 5% to 50% by mass; and (III) content of organic particles in the second section is 3% to 45% by mass.
    Type: Application
    Filed: February 12, 2013
    Publication date: January 22, 2015
    Inventors: Wataru Goda, Shigetoshi Maekawa, Syunichi Osada, Kozo Takahashi, Hitomi Furukawa, Teruya Tanaka
  • Patent number: 8859648
    Abstract: The present invention relates to a retardation film using polyester having a photoelastic coefficient of ?40×10?12 Pa?1 to 40×10?12 Pa?1. The present invention also relates to a polyester resin for optical use which contains a phosphorus compound, and an alicyclic component and a fluorene derivative component as constituents, and satisfies the following equations (6) and (7): 100° C.?glass transition temperature?150° C.??(6) and 1.0?(Ma/2+Mb+Mc)/P?5.0??(7), wherein Ma is the number of moles of an alkali metal element contained in 1 ton of the polyester resin, Mb is the number of moles of an alkaline earth metal element contained in 1 ton of the polyester resin, Mc is the sum of the number of moles of a zinc element (Zn), a cobalt element (Co) and a manganese element (Mn) contained in 1 ton of the polyester resin, and P is the number of moles of a phosphorus element contained in 1 ton of the polyester resin.
    Type: Grant
    Filed: May 23, 2006
    Date of Patent: October 14, 2014
    Assignee: Toray Industries, Inc.
    Inventors: Hideki Moriyama, Shigetoshi Maekawa, Jun Sakamoto, Akimitsu Tsukuda, Masahiro Kimura, Risa Taniguchi
  • Patent number: 8794798
    Abstract: A white film has reflective properties, concealing properties and film-forming stability and can be made into a thin film, a white film, which contains voids therein and satisfies the following formulae (i) to (iii) is provided: 0.6?nB/nA?0.9??(i) 20?nA??(ii) 15?nB??(iii) (wherein, nA represents the number of interfaces in 10 ?m of the surface layer in the film thickness direction; and nB represents the number of interfaces in ±5 ?m of the central part in the film thickness direction).
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: August 5, 2014
    Assignee: Toray Industries, Inc.
    Inventors: Takayuki Ohira, Shigetoshi Maekawa, Daisuke Ogata, Masatoshi Izawa, Kozo Takahashi
  • Publication number: 20140004305
    Abstract: A laminated film includes a base film and a coating layer which contains organic particles and is provided on a surface of the base film, wherein a ratio (SRz/d) of a surface roughness (SRz) and a coating thickness (d) on a surface of the coating layer is 12.5 or more, and the organic particle is made of a thermoplastic resin including an ether bond while the coating layer is made of a binder resin including at least one selected from a sulfonic acid group, a carboxylic acid group, a hydroxyl group and a salt of them.
    Type: Application
    Filed: March 14, 2012
    Publication date: January 2, 2014
    Applicant: Toray Industries, Inc.
    Inventors: Shigetoshi Maekawa, Takayuki Ohira, Kazumasa Ogata, Kozo Takahashi
  • Publication number: 20120320600
    Abstract: A white film has reflective properties, concealing properties and film-forming stability and can be made into a thin film, a white film, which contains voids therein and satisfies the following formulae (i) to (iii) is provided: 0.6?nB/nA?0.9 ??(i) 20?nA ??(ii) 15?nB ??(iii) (wherein, nA represents the number of interfaces in 10 ?m of the surface layer in the film thickness direction; and nB represents the number of interfaces in ±5 ?m of the central part in the film thickness direction).
    Type: Application
    Filed: February 18, 2011
    Publication date: December 20, 2012
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Takayuki Ohira, Shigetoshi Maekawa, Daisuke Ogata, Masatoshi Izawa, Kozo Takahashi
  • Publication number: 20090207490
    Abstract: The present invention relates to a retardation film using polyester having a photoelastic coefficient of ?40×10?12 Pa?1 to 40×10?12 Pa?1. The present invention also relates to a polyester resin for optical use which contains a phosphorus compound, and an alicyclic component and a fluorene derivative component as constituents, and satisfies the following equations (6) and (7): 100° C.?glass transition temperature?150° C.??(6) and 1.0?(Ma/2+Mb+Mc)/P?5.0??(7), wherein Ma is the number of moles of an alkali metal element contained in 1 ton of the polyester resin, Mb is the number of moles of an alkaline earth metal element contained in 1 ton of the polyester resin, Mc is the sum of the number of moles of a zinc element (Zn), a cobalt element (Co) and a manganese element (Mn) contained in 1 ton of the polyester resin, and P is the number of moles of a phosphorus element contained in 1 ton of the polyester resin.
    Type: Application
    Filed: May 23, 2006
    Publication date: August 20, 2009
    Inventors: Hideki Moriyama, Shigetoshi Maekawa, Jun Sakamoto, Akimitsu Tsukuda, Masahiro Kimura, Risa Taniguchi
  • Patent number: 7410686
    Abstract: A glass protecting film including at least 5 or more layers, of which at least one layer is the layer which comprises polyester having 1,4-cyclohexane dimethanol is one of the components, and a glass protecting including a multi-layer structure which comprises at least two kinds of thermoplastic resin, of which the difference of glass transition temperature is 40° C. or less, the face-impact strength is 18 J/mm or more, haze is 3% or less, are films which excel in transparency, tear resistance, and impact resistance, and are suitable for protecting glass and preventing damaged glass fragments.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: August 12, 2008
    Assignee: Toray Industries, Inc.
    Inventors: Syunichi Osada, Shigetoshi Maekawa, Kazumori Sonoda
  • Patent number: 7384690
    Abstract: In order to provide a film having excellent heat resistance, thermal dimensional stability, and mechanical properties, in particular, a film capable of satisfying required properties, e.g., higher strength in accordance with the reduction in thickness of a base film, improved thermal dimensional stability and mechanical properties in a use environment, and higher heat resistance and improved thermal dimensional stability in accordance with the needs for miniaturization and more functionality in electrical and electronic areas, a thermoplastic resin is allowed to contain transition metal oxide particles, and is formed into a biaxially oriented thermoplastic resin film, wherein the melting point of the film is allowed to become higher than the melting point of the thermoplastic resin to be used.
    Type: Grant
    Filed: January 8, 2003
    Date of Patent: June 10, 2008
    Assignee: Toray Industries, Inc.
    Inventors: Tetsuya Machida, Shigetoshi Maekawa, Takuji Higashioji, Tetsuya Tsunekawa
  • Publication number: 20070243364
    Abstract: An acrylic resin film, in which acrylic elastic particles are mixed with an acrylic resin containing glutaric anhydride units, has a total light transmittance of 91% or more, a haze value of 1.5% or less, a folding endurance value (times) of 20 or more, and a heat shrinkage rate of less than 5% at least in either the machine direction or the transverse direction in a heat shrinkage test.
    Type: Application
    Filed: April 22, 2005
    Publication date: October 18, 2007
    Inventors: Shigetoshi Maekawa, Hideki Moriyama, Mitsuhiro Horiuchi, Akimitsu Tsukuda
  • Publication number: 20070231578
    Abstract: A glass protecting film including at least 5 or more layers, of which at least one layer is the layer which comprises polyester having 1,4-cyclohexane dimethanol is one of the components, and a glass protecting including a multi-layer structure which comprises at least two kinds of thermoplastic resin, of which the difference of glass transition temperature is 40° C. or less, the face-impact strength is 18 J/mm or more, haze is 3% or less, are films which excel in transparency, tear resistance, and impact resistance, and are suitable for protecting glass and preventing damaged glass fragments.
    Type: Application
    Filed: May 30, 2007
    Publication date: October 4, 2007
    Applicant: Toray Industries, Inc., a corporation of Japan
    Inventors: Syunichi Osada, Shigetoshi Maekawa, Kazumori Sonoda
  • Patent number: 7241485
    Abstract: A glass protecting film comprising at least 5 or more layers, of which at least one layer is the layer which comprises polyester having 1,4-cyclohexane dimethanol is one of the components, and a glass protecting comprising a multi-layer structure which comprises at least two kinds of thermoplastic resin, of which the difference of glass transition temperature is 40° C. or less, the face-impact strength is 18 J/mm or more, haze is 3% or less, are films which excel in transparency, tear resistance, and impact resistance, and are suitable for protecting glass and preventing damaged glass fragments.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: July 10, 2007
    Assignee: Toray Industries, Inc.
    Inventors: Syunichi Osada, Shigetoshi Maekawa, Kazumori Sonoda
  • Publication number: 20050020803
    Abstract: In order to provide a film having excellent heat resistance, thermal dimensional stability, and mechanical properties, in particular, a film capable of satisfying required properties, e.g., higher strength in accordance with the reduction in thickness of a base film, improved thermal dimensional stability and mechanical properties in a use environment, and higher heat resistance and improved thermal dimensional stability in accordance with the needs for miniaturization and more functionality in electrical and electronic areas, a thermoplastic resin is allowed to contain transition metal oxide particles, and is formed into a biaxially oriented thermoplastic resin film, wherein the melting point of the film is allowed to become higher than the melting point of the thermoplastic resin to be used.
    Type: Application
    Filed: January 8, 2003
    Publication date: January 27, 2005
    Inventors: Tetsuya Machida, Shigetoshi Maekawa, Takuji Higashioji, Tetsuya Tsunekawa
  • Publication number: 20040247879
    Abstract: A glass protecting film comprising at least 5 or more layers, of which at least one layer is the layer which comprises polyester having 1,4-cyclohexane dimethanol is one of the components, and a glass protecting comprising a multi-layer structure which comprises at least two kinds of thermoplastic resin, of which the difference of glass transition temperature is 40° C. or less, the face-impact strength is 18 J/mm or more, haze is 3% or less, are films which excel in transparency, tear resistance, and impact resistance, and are suitable for protecting glass and preventing damaged glass fragments.
    Type: Application
    Filed: May 3, 2004
    Publication date: December 9, 2004
    Inventors: Syunichi Osada, Shigetoshi Maekawa, Kazumori Sonoda