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).
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Publication number: 20150023054Abstract: 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: ApplicationFiled: February 12, 2013Publication date: January 22, 2015Inventors: Wataru Goda, Shigetoshi Maekawa, Syunichi Osada, Kozo Takahashi, Hitomi Furukawa, Teruya Tanaka
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Patent number: 8859648Abstract: 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: GrantFiled: May 23, 2006Date of Patent: October 14, 2014Assignee: Toray Industries, Inc.Inventors: Hideki Moriyama, Shigetoshi Maekawa, Jun Sakamoto, Akimitsu Tsukuda, Masahiro Kimura, Risa Taniguchi
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Patent number: 8794798Abstract: 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: GrantFiled: February 18, 2011Date of Patent: August 5, 2014Assignee: Toray Industries, Inc.Inventors: Takayuki Ohira, Shigetoshi Maekawa, Daisuke Ogata, Masatoshi Izawa, Kozo Takahashi
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Publication number: 20140004305Abstract: 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: ApplicationFiled: March 14, 2012Publication date: January 2, 2014Applicant: Toray Industries, Inc.Inventors: Shigetoshi Maekawa, Takayuki Ohira, Kazumasa Ogata, Kozo Takahashi
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Publication number: 20120320600Abstract: 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: ApplicationFiled: February 18, 2011Publication date: December 20, 2012Applicant: TORAY INDUSTRIES, INC.Inventors: Takayuki Ohira, Shigetoshi Maekawa, Daisuke Ogata, Masatoshi Izawa, Kozo Takahashi
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Publication number: 20090207490Abstract: 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: ApplicationFiled: May 23, 2006Publication date: August 20, 2009Inventors: Hideki Moriyama, Shigetoshi Maekawa, Jun Sakamoto, Akimitsu Tsukuda, Masahiro Kimura, Risa Taniguchi
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Patent number: 7410686Abstract: 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: GrantFiled: May 30, 2007Date of Patent: August 12, 2008Assignee: Toray Industries, Inc.Inventors: Syunichi Osada, Shigetoshi Maekawa, Kazumori Sonoda
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Patent number: 7384690Abstract: 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: GrantFiled: January 8, 2003Date of Patent: June 10, 2008Assignee: Toray Industries, Inc.Inventors: Tetsuya Machida, Shigetoshi Maekawa, Takuji Higashioji, Tetsuya Tsunekawa
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Publication number: 20070243364Abstract: 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: ApplicationFiled: April 22, 2005Publication date: October 18, 2007Inventors: Shigetoshi Maekawa, Hideki Moriyama, Mitsuhiro Horiuchi, Akimitsu Tsukuda
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Publication number: 20070231578Abstract: 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: ApplicationFiled: May 30, 2007Publication date: October 4, 2007Applicant: Toray Industries, Inc., a corporation of JapanInventors: Syunichi Osada, Shigetoshi Maekawa, Kazumori Sonoda
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Patent number: 7241485Abstract: 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: GrantFiled: October 28, 2002Date of Patent: July 10, 2007Assignee: Toray Industries, Inc.Inventors: Syunichi Osada, Shigetoshi Maekawa, Kazumori Sonoda
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Publication number: 20050020803Abstract: 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: ApplicationFiled: January 8, 2003Publication date: January 27, 2005Inventors: Tetsuya Machida, Shigetoshi Maekawa, Takuji Higashioji, Tetsuya Tsunekawa
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Publication number: 20040247879Abstract: 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: ApplicationFiled: May 3, 2004Publication date: December 9, 2004Inventors: Syunichi Osada, Shigetoshi Maekawa, Kazumori Sonoda