Patents by Inventor Kazuya Matsumura
Kazuya Matsumura 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: 20210015284Abstract: Provided is a carpet having transmissiveness and capable of retaining quality including the light transmissiveness, where in one embodiment, the carpet comprises a pile layer in which a plurality of pile yarns are tufted on the front face of a primary base fabric; and a backing layer disposed on the back face side of the primary base fabric, wherein the total light transmittance of the carpet is 0.5% or higher; the lightness when the carpet is viewed from the front face side of the primary base fabric is 30 or higher; and the thickness loss rate under dynamic loading accompanied by friction of the carpet is 25% or lower.Type: ApplicationFiled: March 29, 2019Publication date: January 21, 2021Applicant: Toray Industries, Inc.Inventors: Kazuya Matsumura, Masanobu Takeda, Hiroshi Kajiyama, Kazuharu Hase
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Patent number: 10468954Abstract: A spindle motor includes a stationary unit and a rotating unit. The rotating unit is rotatable with respect to the stationary unit in a state in which the stationary unit is aligned with a central axis. The stationary unit includes a stator core and coils. The stator core includes a cylindrical core back and teeth units extending radially outward from an outer circumferential portion of the core back. The coils are defined by a conductive wire wound around each of the teeth units. The rotating unit includes a magnet located radially outside the teeth units. An axial length of the magnet is shorter than an axial length of the teeth unit. A first angle corresponding to a circumferential width of the teeth unit is smaller than a second angle corresponding to a circumferential gap between the adjacent teeth units.Type: GrantFiled: November 14, 2018Date of Patent: November 5, 2019Assignee: NIDEC CORPORATIONInventors: Kazuya Matsumura, Yoichi Sekii, Takuro Iguchi
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Publication number: 20190190363Abstract: A spindle motor includes a stationary unit and a rotating unit. The rotating unit is rotatable with respect to the stationary unit in a state in which the stationary unit is aligned with a central axis. The stationary unit includes a stator core and coils. The stator core includes a cylindrical core back and teeth units extending radially outward from an outer circumferential portion of the core back. The coils are defined by a conductive wire wound around each of the teeth units. The rotating unit includes a magnet located radially outside the teeth units. An axial length of the magnet is shorter than an axial length of the teeth unit. A first angle corresponding to a circumferential width of the teeth unit is smaller than a second angle corresponding to a circumferential gap between the adjacent teeth units.Type: ApplicationFiled: November 14, 2018Publication date: June 20, 2019Inventors: Kazuya MATSUMURA, Yoichi SEKII, Takuro IGUCHI
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Publication number: 20180135214Abstract: The present invention aims to provide a fabric that can improve the gripping performance of gripping of a contacted object via a glove when the fabric is made into the glove, and that can facilitate wearing and taking off the glove. The present invention is a fabric including a filament yarn A having a single fiber diameter of 100 to 1000 nm and a filament yarn B having a single fiber diameter of 10 ?m or more, wherein a value obtained by dividing an exposed area of the filament yarn A on a first surface of the fabric by an exposed area, on the first surface, of all fibers exposed on the first surface is 0.50 or more and 0.90 or less.Type: ApplicationFiled: May 26, 2016Publication date: May 17, 2018Applicant: TORAY INDUSTRIES, INC.Inventors: Kenichi Sakai, Kazuya Matsumura, Hiroshi Kajiyama
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Publication number: 20160318281Abstract: A porous film is excellent in barrier properties such as blood barrier property and viral barrier property, puncture strength, and moisture permeability. A waterproof and moisture-permeable material that uses the porous film, and reduces the stuffy feeling that a person feels when wearing it and is excellent in the wearing comfortableness. The porous film has a degree of moisture permeability greater than or equal to 150 g/m2·h, a puncture strength is greater than or equal to 100 N/mm, and a blood barrier property is class 4 or higher.Type: ApplicationFiled: December 1, 2014Publication date: November 3, 2016Inventors: Kei Ikoma, Takuya Kuma, Masatoshi Ohkura, Shusaku Narita, Masanobu Takeda, Kazuya Matsumura
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Patent number: 9279202Abstract: The invention relates to a needle-punched nonwoven fabric wherein short fibers of polylactic acid containing an epoxy compound account for 20 to 40 mass % while short fibers of polyethylene terephthalate account for 80 to 60 mass %, the metsuke (weight per unit surface area) being 100 to 200 g/m2, and the tensile strength per metsuke at 20° C. being 0.30 to 0.60 (N/cm)/(g/m2) in the longitudinal direction and 0.48 to 0.90 (N/cm)/(g/m2) in the lateral direction. The present invention provides needle-punched nonwoven fabrics that are low in environment load, high enough in durability to serve as interior finishing material for automobiles, and high in stretchability during molding.Type: GrantFiled: October 18, 2013Date of Patent: March 8, 2016Assignee: Toray Industries, Inc.Inventors: Kazuya Matsumura, Hiroshi Kajiyama, Shusaku Narita, Seiji Yokoi, Shuntaro Ishii
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Publication number: 20140041171Abstract: The invention relates to a needle-punched nonwoven fabric wherein short fibers of polylactic acid containing an epoxy compound account for 20 to 40 mass % while short fibers of polyethylene terephthalate account for 80 to 60 mass %, the metsuke (weight per unit surface area) being 100 to 200 g/m2, and the tensile strength per metsuke at 20° C. being 0.30 to 0.60 (N/cm)/(g/m2) in the longitudinal direction and 0.48 to 0.90 (N/cm)/(g/m2) in the lateral direction. The present invention provides needle-punched nonwoven fabrics that are low in environment load, high enough in durability to serve as interior finishing material for automobiles, and high in stretchability during molding.Type: ApplicationFiled: October 18, 2013Publication date: February 13, 2014Applicant: Toray Industries, Inc.Inventors: Kazuya Matsumura, Hiroshi Kajiyama, Shusaku Narita, Seiji Yokoi, Shuntaro Ishii
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Publication number: 20120064791Abstract: The invention relates to a needle-punched nonwoven fabric wherein short fibers of polylactic acid containing an epoxy compound account for 20 to 40 mass % while short fibers of polyethylene terephthalate account for 80 to 60 mass %, the metsuke (weight per unit surface area) being 100 to 200 g/m2, and the tensile strength per metsuke at 20° C. being 0.30 to 0.60 (N/cm)/(g/m2) in the longitudinal direction and 0.48 to 0.90 (N/cm)/(g/m2) in the lateral direction. The present invention provides needle-punched nonwoven fabrics that are low in environment load, high enough in durability to serve as interior finishing material for automobiles, and high in stretchability during molding.Type: ApplicationFiled: May 20, 2010Publication date: March 15, 2012Applicant: Toray Industries, Inc.Inventors: Kazuya Matsumura, Hiroshi Kajiyama, Shusaku Narita, Seiji Yokoi, Shuntaro Ishii
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Patent number: 8113739Abstract: A sand drift prevention method in which a plurality of columnar sandbags made of a tubular knit fabric are placed so as to cross over one another, and in such a pitch that 3 to 30 sandbags are disposed for every ten meters, and in which the cross-sectional area of each of the columnar sandbags is 10 to 400 cm2. A method of forming and improving the vegetation in sandy soil in which drift of sand is prevented by the sand drift prevention method, a plant desired to grow is grown in the sandy soil surface exposed as being surrounded by columnar sandbags placed so as to cross over one another. A tubular knit fabric for a columnar sandbag employed in these methods, and, in particular, the tubular knit fabric knitted by use of a polylactic-acid fiber.Type: GrantFiled: April 25, 2008Date of Patent: February 14, 2012Assignees: Toray Industries, Inc., Mitsukawa & Co., Ltd.Inventors: Osamu Mito, Kazuya Matsumura, Koji Sasaki, Takenobu Okumura, Shigeto Matsumoto, Makoto Maeda
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Patent number: 7767120Abstract: The present invention relates to multifilament crimped yarn comprising an aliphatic polyester and methods for producing thereof, and to carpets that are manufactured by using the crimped yarn. The present invention provides an aliphatic polyester multifilament crimped yarn for the carpets comprising an aliphatic polyester having a melting point of equal to or higher than 130° C., said multifilament crimped yarn having crimp elongation rate of the multifilament crimped yarn after being processed with boiling water of 3-35% and breaking strength of 1-5 cN/decitex.Type: GrantFiled: April 2, 2004Date of Patent: August 3, 2010Assignee: Toray Industries, Inc.Inventors: Daisuke Yahata, Kazuya Matsumura, Shinnichi Nishihata, Motokatsu Nishimura, Tatsuro Mizuki, Masakatsu Umeda, Takehiko Miyoshi, Kenzo Kubo
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Publication number: 20090068463Abstract: A crimped yarn includes a synthetic fiber which contains an aliphatic polyester resin (A) and a thermoplastic polyamide resin (B) and exposed area ratio of the aliphatic polyester resin (A) with respect to fiber surface area is 5% or less and a crimp is imparted to a multifilament comprising said synthetic fiber, and a fiber structure containing said crimped yarn as at least a part thereof. Furthermore, a crimped yarn in which the aliphatic polyester resin (A) and the thermoplastic polyamide resin (B) are constituted of a polymer alloy type synthetic fiber, or a crimped yarn constituted by a sheath/core type composite fiber in which the core component comprises the aliphatic polyester resin (A) or a polymer alloy of the aliphatic polyester resin (A) and the thermoplastic polyamide resin (B) and the sheath component comprises the thermoplastic polyamide resin (B), and a fiber structure containing said crimped yarn as at least a part thereof.Type: ApplicationFiled: October 18, 2006Publication date: March 12, 2009Inventors: Katsuhiko Mochizuki, Kousuke Fukudome, Shozo Inoue, Toshiaki Kimura, Syusaku Narita, Atsushi Shinozaki, Hiroshi Kajiyama, Kazuya Matsumura
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Patent number: 7479917Abstract: An electromagnetic wave absorber has a configuration in which at least three hollow tetrahedrons, each having one open face, are connected to one another so that each surface opposite to a respective open face of the hollow tetrahedrons defines a respective side face of a hollow pyramid. Preferably, the electromagnetic wave absorber is made of sheet electromagnetic wave absorption members, which have a corrugated board structure in which at least one sheet includes an electrically conductive material. The electromagnetic wave absorber is low-cost, has reduced transport volume, excellent electromagnetic wave absorption characteristics from low frequency to high frequency with a shorter absorber length, has no or small difference in characteristics due to polarization plane, is lightweight and high in structural strength, and easy to manufacture and install.Type: GrantFiled: August 3, 2006Date of Patent: January 20, 2009Assignees: TDK Corporation, TORAY Industries, Inc.Inventors: Hiroshi Kurihara, Toshifumi Saito, Miki Kasabo, Toru Sugahara, Takashi Tanoue, Kazuya Matsumura
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Publication number: 20080279630Abstract: A sand drift prevention method in which a plurality of columnar sandbags made of a tubular knit fabric are placed so as to cross over one another, and in such a pitch that 3 to 30 sandbags are disposed for every ten meters, and in which the cross-sectional area of each of the columnar sandbags is 10 to 400 cm2. A method of forming and improving the vegetation in sandy soil in which drift of sand is prevented by the sand drift prevention method, a plant desired to grow is grown in the sandy soil surface exposed as being surrounded by columnar sandbags placed so as to cross over one another. A tubular knit fabric for a columnar sandbag employed in these methods, and, in particular, the tubular knit fabric knitted by use of a polylactic-acid fiber.Type: ApplicationFiled: April 25, 2008Publication date: November 13, 2008Inventors: Osamu Mito, Kazuya Matsumura, Koji Sasaki, Takenobu Okumura, Shigeto Matsumoto, Makoto Maeda
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Patent number: 7416779Abstract: To provide a fiberboard capable of reducing a load on the environment at all states of producing, using, and abolishing and moreover having a high degree of bending strength and a high bending-strength retention rate at high temperature and high humidity so as to be usable for an automobile interior material or building material and a fiber-board producing method. The fiberboard is formed by mixing natural fiber with polylactic acid resin serving as a binder and has an apparent density of 0.2 g/cm3.Type: GrantFiled: September 17, 2003Date of Patent: August 26, 2008Assignees: Toyota Auto Body Co. Ltd., Toyota Boshoku Co. Ltd., Toray Industries, Inc., Toyota Tsusho Corporation, Toyota Jidosha Kabushiki KaishaInventors: Masanori Hashiba, Takehiro Kato, Kousuke Tamaki, Osamu Mito, Kazuya Matsumura, Tomomichi Fujiyama, Yuhei Maeda, Eiji Sugiyama, Takashi Inoh, Hiroshi Urayama, Hisashi Okuyama
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Publication number: 20080188151Abstract: Disclosed herein is a fabric to be used for restraint devices having both internal pressure-holding capability or low air permeability and mountability or wearer comfort, especially for air belts suitable for practical use. The fabric to be used for restraint devices includes a coated woven fabric obtained by coating, with a resin, at least one surface of a woven fabric containing multifilaments, each of which is composed of microfibers each having a fineness of 0.05 to 1 dtex, wherein the thickness of the coated woven fabric is in the range of 0.10 to 0.25 mm.Type: ApplicationFiled: October 18, 2005Publication date: August 7, 2008Inventors: Daisuke Yokoi, Atsushi Morimoto, Toru Tsuchizaki, Takashi Shiotani, Kazuya Matsumura
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Publication number: 20070030194Abstract: An electromagnetic wave absorber has a configuration in which at least three hollow tetrahedrons, each having one open face, are connected to one another that each surface opposite to a respective open face of the hollow tetrahedrons defines a respective side face of a hollow pyramid. Preferably, the electromagnetic wave absorber is made of sheet electromagnetic wave absorption members, which have a corrugated board structure in which at least one sheet includes an electrically conductive material. The electromagnetic wave absorber is low-cost, has reduced transport volume, excellent electromagnetic wave absorption characteristics from low frequency to high frequency with a shorter absorber length, has no or small difference in characteristics due to polarization plane, is lightweight and high in structural strength, and easy to manufacture and install.Type: ApplicationFiled: August 3, 2006Publication date: February 8, 2007Applicants: TDK CORPORATION, TORAY INDUSTRIES, INC.Inventors: Hiroshi KURIHARA, Toshifumi SAITO, Miki KASABO, Toru SUGAHARA, Takashi TANOUE, Kazuya MATSUMURA
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Publication number: 20040191471Abstract: The present invention relates to multifilament crimped yarn comprising an aliphatic polyester and methods for producing thereof, and to carpets that are manufactured by using the crimped yarn. The present invention provides an aliphatic polyester multifilament crimped yarn for the carpets comprising an aliphatic polyester having a melting point of equal to or higher than 130° C., said multifilament crimped yarn having crimp elongation rate of the multifilament crimped yarn after being processed with boiling water of 3-35% and breaking strength of 1-5 cN/decitex.Type: ApplicationFiled: April 2, 2004Publication date: September 30, 2004Applicant: Toray Industries, Inc.Inventors: Daisuke Yahata, Kazuya Matsumura, Shinnichi Nishihata, Motokatsu Nishimura, Tatsuro Mizuki, Masakatsu Umeda, Takehiko Miyoshi, Kenzo Kubo
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Publication number: 20040182064Abstract: The present invention relates to multifilament crimped yarn comprising an aliphatic polyester and methods for producing thereof, and to carpets that are manufactured by using the crimped yarn. The present invention provides an aliphatic polyester multifilament crimped yarn for the carpets comprising an aliphatic polyester having a melting point of equal to or higher than 130° C., said multifilament crimped yarn having crimp elongation rate of the multifilament crimped yarn after being processed with boiling water of 3-35% and breaking strength of 1-5 cN/decitex.Type: ApplicationFiled: April 2, 2004Publication date: September 23, 2004Applicant: Toray Industries, Inc.Inventors: Daisuke Yahata, Kazuya Matsumura, Shinnichi Nishihata, Motokatsu Nishimura, Tatsuro Mizuki, Masakatsu Umeda, Takehiko Miyoshi, Kenzo Kubo
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Patent number: 6740401Abstract: The present invention relates to multifilament crimped yarn comprising an aliphatic polyester and methods for producing thereof, and to carpets that are manufactured by using the crimped yarn. The present invention provides an aliphatic polyester multifilament crimped yarn for the carpets comprising an aliphatic polyester having a melting point of equal to or higher than 130° C., said multifilament crimped yarn having crimp elongation rate of the multifilament crimped yarn after being processed with boiling water of 3-35% and breaking strength of 1-5 cN/decitex.Type: GrantFiled: November 8, 2002Date of Patent: May 25, 2004Assignee: Toray Industries, Inc.Inventors: Daisuke Yahata, Kazuya Matsumura, Shinnichi Nishihata, Motokatsu Nishimura, Tatsuro Mizuki, Masakatsu Umeda, Takehiko Miyoshi, Kenzo Kubo
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Publication number: 20040096623Abstract: To provide a fiberboard capable of reducing a load on the environment at all states of producing, using, and abolishing and moreover having a high degree of bending strength and a high bending-strength retention rate at high temperature and high humidity so as to be usable for an automobile interior material or building material and a fiber-board producing method. The fiberboard is formed by mixing natural fiber with polylactic acid resin serving as a binder and has an apparent density of 0.2 g/cm3.Type: ApplicationFiled: September 17, 2003Publication date: May 20, 2004Inventors: Masanori Hashiba, Takehiro Kato, Kousuke Tamaki, Osamu Mito, Kazuya Matsumura, Tomomichi Fujiyama, Yuhei Maeda, Eiji Sugiyama, Takashi Inoh, Hiroshi Urayama, Hisashi Okuyama