Patents Assigned to Toyo Boseki Kabushiki Kaisha
  • Patent number: 10457788
    Abstract: A gas-barrier multilayer film, wherein (A) a first inorganic thin film layer, (C) a gas-barrier resin composition layer, and (D) a second inorganic thin film layer are stacked in this order with or without intervention of other layers on at least one surface of a plastic film, the gas-barrier resin composition layer (C) is formed from a gas-barrier resin composition comprising (a) a gas-barrier resin including an ethylene-vinyl alcohol-based copolymer, (b) an inorganic layered compound, and (c) at least one additive selected from coupling agents and crosslinking agents, and the content of the inorganic layered compound (b) in the gas-barrier resin composition is from 0.1% by mass to 20% by mass based on 100% by mass in total of the gas-barrier resin (a), the inorganic layered compound (b), and the additive (c).
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: October 29, 2019
    Assignee: TOYO BOSEKI KABUSHIKI KAISHA
    Inventors: Yumi Tsumagari, Yoji Takatsu, Kyoko Inagaki, Takeshi Okawa, Yoshiharu Morihara, Syuusei Matsuda
  • Patent number: 10054816
    Abstract: The present invention provides a liquid crystal display method capable of, when a screen thereof is observed through a polarizer such as sunglasses, ensuring an excellent visibility regardless of the angle of observation. In a liquid crystal display device at least having a backlight light source, a liquid crystal cell, and a polarizer disposed on a viewing side of the liquid crystal cell, a white light-emitting diode is used as the backlight light source; and a polymer film having a retardation of from 3,000 nm to 30,000 nm is used so as to be disposed on the viewing side of the polarizer so that an angle between an absorption axis of the polarizer and a slow axis of the polymer film becomes about 45 degrees.
    Type: Grant
    Filed: May 11, 2010
    Date of Patent: August 21, 2018
    Assignees: TOYO BOSEKI KABUSHIKI KAISHA, KEIO UNIVERSITY
    Inventors: Yasuhiro Koike, Akihiro Tagaya
  • Patent number: 9937524
    Abstract: Provided is a method of manufacturing a flexographic printing plate with which it is possible to prevent plate surface contamination even in the printing for long time. A method for manufacturing a flexographic printing plate, characterized in that, a liquid containing an amino-modified silicone compound is made to contact with a flexographic printing plate containing a latex having gelation degree of not less than 50% by mass. Said latex occupies preferably not less than 30% by mass of the printing resin plate, and amino group equivalent of the amino-modified silicone compound is preferably not less than 500 g/mol.
    Type: Grant
    Filed: December 24, 2010
    Date of Patent: April 10, 2018
    Assignee: TOYO BOSEKI KABUSHIKI KAISHA
    Inventors: Kazuya Yoshimoto, Keiichi Motoi
  • Patent number: 9931822
    Abstract: A polyester film made from two kinds of polyester resins and having a specific DSC (and a specific glass transition point) is provided, (i) which is superior in mechanical property, capable of thermocompression bonding with a metal sheet, despite a high degree of crystallization of the film, reduces quality change of plastic film laminated on the metal sheet even if faced with variation of conditions of thermocompression bonding with the metal sheet, and which is capable of thermocompression bonding even at a relatively low temperature, (ii) which is superior in formability, (iii) which is superior in flavoring property and impact resistance, and which obliterates occurrence of whitening or delamination of the film, or microcracks on the film, even if the film in the metal laminated sheet obtained by thermocompression bonding of the film on the metal sheet or on the surface of a metal can obtained by subjecting the metal laminated sheet to various form processings is crystallized, and (iv) which satisfies pro
    Type: Grant
    Filed: September 20, 2004
    Date of Patent: April 3, 2018
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Keizo Kawahara, Katsuya Ito, Kazutake Okamoto, Hideki Shimizu, Hiroshi Nagano, Mitsuo Inoue, Shoichi Gyobu
  • Patent number: 9795932
    Abstract: The purpose of the present invention is to provide a porous hollow fiber membrane that can efficiently separate and remove the substances to be removed such as small-particle virus contained in a solution and, at the same time, useful recovering substances such as protein can be efficiently permeated and the decrease of its transmission rate with elapse of time is small. The porous hollow fiber membrane of the present invention is characterized in that the filtration downstream surface thereof has dot-shaped or slit-shaped pores, the filtration upstream surface thereof is a network structure or a fine particle aggregate structure, the central region of the membrane is composed of a substantially homogeneous structure, the membrane wall is composed of a structure having substantially no macrovoids, the permeability for pure water is 10 to 300 L/(h·m2·bar) and the permeability for a 0.1% by weight solution of bovine ?-globulin is 30 to 100% of the permeability for pure water.
    Type: Grant
    Filed: December 24, 2009
    Date of Patent: October 24, 2017
    Assignee: TOYO BOSEKI KABUSHIKI KAISHA
    Inventors: Hideyuki Yokota, Noriaki Kato, Hirofumi Ogawa, Junsuke Morita
  • Patent number: 9687592
    Abstract: A method for manufacturing a nerve regeneration-inducing tube with excellent pressure resistance, shape recovery property, anti-kink property, film exfoliation resistance, resistance to invasion of outer tissues, and leakage resistance. The tubular body is formed by weaving together fibers made up of biodegradable polymer. The outer surface of the tubular body is coated multiple times with a collagen solution. The lumen of the tubular body is filled with collagen. Viscosity of the collagen solution that is first applied to the outer surface of the tubular body is between 2 to 800 cps. Viscosity of the collagen solution that is subsequently applied is higher than viscosity of the first applied collagen solution.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: June 27, 2017
    Assignee: TOYO BOSEKI KABUSHIKI KAISHA
    Inventors: Fumihiko Kajii, Hidenori Tanaka, Yuta Kawakatsu, Susumu Kashiwabara, Masaki Sato
  • Patent number: 9640689
    Abstract: The invention provides a polyester film for the protection of a back surface of a solar cell which, when applied to a silicon thin film solar cell, exhibits excellent durability even under high-temperature and high-humidity conditions and long term thermal stability. The polyester film (a) contains a polyester, as a main constituent, obtained by polymerization using a polycondensation catalyst containing aluminum and/or its compound as well as a phosphorus compound having an aromatic group in the molecule; (b) has a whiteness degree of 50 or higher; (c) contains 3 to 50% by mass of fine particles with a mean particle diameter of 0.1 to 3 ?m; and (d) has an acid value from not lower than 1 (eq/ton) and not higher than 30 (eq/ton).
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: May 2, 2017
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Shiro Hamamoto, Yoshitomo Ikehata, Katsuya Ito, Jun Inagaki
  • Patent number: 9605122
    Abstract: Provided is a gas-barrier multilayer film which decreases little in gas-barrier properties even through retortion and which suffers no delamination. The gas-barrier multilayer film is characterized by comprising a plastic film and, superposed directly or through other layer on at least one surface thereof in the following order, an inorganic thin film layer and a gas-barrier resin composition layer. The gas-barrier film is further characterized in that the gas-barrier resin composition layer has been formed from a gas-barrier resin composition comprising a gas-barrier resin constituted of an ethylene/vinyl alcohol copolymer, an inorganic lamellar compound, and an additive, that the content of the inorganic lamellar compound in the gas-barrier resin composition is 0.1-9.0 mass %, that the additive is a coupling agent and/or a crosslinking agent, and that the gas-barrier resin composition layer has a thickness of 0.05-0.5 ?m.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: March 28, 2017
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Youji Takatsu, Yumi Tsumagari, Takeshi Ookawa, Yoshiharu Morihara, Syuusei Matsuda
  • Patent number: 9546446
    Abstract: A polyethylene fiber characterized by having an intrinsic viscosity [?] of 0.8 dL/g or more and less than 5 dL/g; being composed of a repeating unit substantially derived from ethylene; having pores formed inside of the fiber; having an average diameter of the pores of ranging from 3 nm to 1 ?m when the diameter is measured, by each pore being approximated by a column, at a contact angle of 140 degrees, in a mercury intrusion method; a porosity of the pores of ranging from 1.5% to 20%; and having a tensile strength greater than or equal to 8 cN/dtex.
    Type: Grant
    Filed: October 10, 2010
    Date of Patent: January 17, 2017
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Yasunori Fukushima, Shoji Oda, Minoru Masuda, Akira Hamano, Kunio Nishioka
  • Patent number: 9540678
    Abstract: The present invention intends to provide an assay system using split luciferase that has a remarkably high detection sensitivity. In an embodiment, binding of mutually binding first and second proteins is detected by preparing a first fusion protein comprising the first protein fused with a peptide having the amino acid sequence of amino acid SEQ ID NO: 1 and a second fusion protein comprising the second protein fused with a peptide having an amino acid sequence selected from the group consisting of amino acid SEQ ID NOS: 2 to 6, and allowing the first fusion protein to bind with the second fusion protein to form a complex, and detecting luminescence emitted from the complex.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: January 10, 2017
    Assignees: The University of Tokyo, Toyo Boseki Kabushiki Kaisha, ProbeX Inc.
    Inventors: Takeaki Ozawa, Naomi Misawa, Kenji Miura, Tasuku Okamoto, Shigeaki Nishii, Kenji Masuda
  • Patent number: 9394638
    Abstract: A non-woven fabric which is excellent in thermal resistance, mechanical strength, and thermal dimensional stability for applications exposed to high temperature circumstance and has an extremely large surface area and exhibit an excellent filter performance is obtained. The non-woven fabric is composed of polyimide fibers which are obtained by polycondensation of at least an aromatic tetracarboxylic acid and an aromatic diamine having a benzoxazole structure and have a fiber diameter in the range of 0.001 ?m to 1 ?m. The non-woven fabric is obtained by the steps of preparing a polyamic acid by polycondensation of an aromatic tetracarboxylic acid and an aromatic diamine having a benzoxazole structure, and electro-spinning the polyamic acid to form a polyimide precursor non-woven fabric; and imidizing a polyimide precursor fiber bundle.
    Type: Grant
    Filed: June 19, 2007
    Date of Patent: July 19, 2016
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Masahiko Nakamori, Satoshi Maeda, Tooru Kitagawa, Hisato Kobayashi, Yasuo Ohta
  • Patent number: 9352508
    Abstract: There is provided a thermally shrinkable polyester film where the opening ability along the perforation is very good. A thermally shrinkable polyester film comprising polyester resin in which ethylene terephthalate is a main constituting component and not less than 13 molar % of one or more monomer component(s) which can become non-crystalline component is/are contained in the total polyester resin components, wherein the film has specific thermally shrinking characteristics and specific mechanical characteristics after thermal shrinking treatment.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: May 31, 2016
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Masayuki Haruta, Yukinobu Mukoyama, Katsuhiko Nose
  • Patent number: 9290625
    Abstract: An aqueous resin composition that can provide excellent properties using a high molecular weight resin and less amount of surfactant, and also that does not require a complicated production procedure, is provided. The aqueous resin composition is obtained by heating and dissolving 100 parts by mass of acid-modified chlorinated polyolefin with an average molecular weight of 37,000 to 150,000 in the presence of 2 to 30 parts by weight of a surfactant, 10 to 50 parts by mass of a glycol ether-based compound that satisfies general formula (1) shown below, and 150 to 425 parts by mass of water, and then dispersing this with a basic compound that has been added at a ratio of 1 to 4 chemical equivalents per carboxyl group of the acid-modified chlorinated polyolefin. General Formula (1) C4H9—(OCH2CH2)n—OH n: an integer from 1 to 4.
    Type: Grant
    Filed: July 21, 2006
    Date of Patent: March 22, 2016
    Assignee: TOYO BOSEKI KABUSHIKI KAISHA
    Inventors: Kenji Kashihara, Hideo Matsuoka
  • Patent number: 9133300
    Abstract: Provided is a resin composition for an adhesive comprising a polyurethane resin containing a carboxyl group, having specific range of an acid value having specific range of a number average molecular weight and having specific range of a glass transition temperature a polyester resin having specific range of a number average molecular weight and having specific range of a glass transition temperature; an epoxy resin containing a nitrogen atom; and an epoxy resin having a dicyclopentadiene skeleton, in which a content rate of the polyurethane resin to a sum of the polyurethane resin and the polyester resin is 70 to 95 percent by mass, a content rate of the total epoxy resin contained in the resin composition to the sum of the polyurethane resin and the polyester resin is 5 to 30 percent by mass.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: September 15, 2015
    Assignees: TOYO BOSEKI KABUSHIKI KAISHA, NIPPON MEKTRON, LTD.
    Inventors: Takeshi Ito, Shintaro Nanbara, Hiroko Asada, Yuto Tanikawa, Hideaki Tanaka, Yoichi Kenmotsu
  • Patent number: 9096782
    Abstract: The present invention provides a polyester, a polyester composition and a pressure-sensitive adhesive composition capable of obtaining a pressure-sensitive adhesive which is global-environmentally friendly and is excellent in pressure-sensitive adhesion properties, using a plant-derived raw material; and a pressure-sensitive adhesive layer and a pressure-sensitive adhesive sheet which can be obtained by using the same. A polyester of the present invention is a polyester comprising at least a lactic acid unit, a dibasic acid unit and a glycol unit, wherein the dibasic acid unit contains dimer acid, and the polyester has a glass transition temperature as measured at a temperature rising rate of 20° C./minute using a differential scanning calorimeter, of ?70 to ?20° C., a weight average molecular weight of 20,000 to 300,000 and a hydroxyl value of 1 to 100 mgKOH/g.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: August 4, 2015
    Assignees: NITTO DENKO CORPORATION, Toyo Boseki Kabushiki Kaisha
    Inventors: Hitoshi Takahira, Satomi Yoshie, Tadashi Nakajima, Daiki Funaoka, Katsuya Shimeno
  • Patent number: 9096921
    Abstract: The present invention provides a transparent conductive film excellent in pen sliding durability at the time of using the transparent conductive film for a touch panel and which enables to production a touch panel having excellent flatness. A transparent conductive film of the present invention comprises a transparent plastic film base and a transparent conductive thin film containing crystalline indium oxide as a main component laminated on at least one face of a transparent plastic film base, wherein an average circle-equivalent diameter of crystal grains of indium oxide of the transparent conductive thin film is 30 to 1000 nm, and a coefficient of variation of a circle-equivalent diameter of the crystal grains is 0.00 to 0.30. The transparent conductive film preferably contains indium oxide containing 0.5 to 8% by mass of tin oxide.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: August 4, 2015
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Naka Tatami, Toshiyuki Oya, Hideo Murakami
  • Patent number: 9085124
    Abstract: A heat sealable polypropylene resin laminate film having good toughness and heat sealing strength and energy sufficient for packaging heavy goods, mainly fruits and vegetables, and a package made of such film, is a laminate film having three or more layers, a substrate layer made of a crystalline polypropylene resin, a heat sealable layer having a melting point of not more than 150° C., and an intermediate layer. The product of the tensile modulus of elasticity (GPa) in both orthogonal directions of the film is 3.1-6.0 (GPa)2, and the heat sealing energy is not less than 11N·cm/15 mm when the film is sealed, such that the heat sealing strength of the film is not less than 8N/15 mm.
    Type: Grant
    Filed: February 18, 2005
    Date of Patent: July 21, 2015
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Kenji Kawai, Hirokazu Oogi, Naonobu Oda, Tadashi Nakaya, Tooru Imai, Yuka Sako
  • Patent number: 9080027
    Abstract: Disclosed is a heat-shrinkable polyester film which, even when stored in an outside warehouse which is not temperature-controlled during a hot summer, does not result in the film shrinking (so-called natural shrinkage); which further has a low decrease in shrinkage rate in the main shrinkage direction, and which can be attached aesthetically and efficiently without changing the temperature conditions for causing heat shrinkage when attaching as a label by heat-shrinking the same to a container (e.g., a plastic bottle). The disclosed heat-shrinkable polyester film comprises a polyester resin having ethylene terephthalate as a main component and containing at least 7 mol % of at least one monomer capable of forming an amorphous component in the whole component of polyester resin. In the heat-shrinkable polyester film, the 80° C.-120° C.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: July 14, 2015
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Masayuki Haruta, Yukinobu Mukoyama
  • Patent number: 9023534
    Abstract: The present invention provides a fiber having a nano-order fiber diameter, which is produced by without a process of dehydration and cyclization by a heat treatment after fiber spinning and has excellent heat resistance and mechanical strength, and a non-woven fabric composed of the fiber, and discloses the polyamide-imide fiber and the non-woven fabric having an average fiber diameter of from 0.001 ?m to 1 ?m and also discloses the process for producing threrof. The present invention also provides a separator for an electronic component which has a high conductivity and a small separator thickness and is improved in safety during reflow soldering or short-circuiting, and discloses the separator composed of a non-woven fabric obtained by an electro-spinning method.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: May 5, 2015
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Masahiko Nakamori, Yasuo Ohta, Hisato Kobayashi, Syoji Oda, Nobuyuki Taniguchi, Daisuke Sakura, Katsuya Shimeno
  • Patent number: 9017714
    Abstract: A nerve regeneration-inducing tube is provided which is excellent in cell growth property, resistance to pressure, shape recovery property, and anti-kink property in a nerve regeneration-inducing tube where a collagen solution is applied on the outer surface of a tubular body woven with ultrafine fiber comprising biodegradable and bioabsorbable polymer while collagen is filled in the inner area of the tubular body. The nerve regeneration-inducing tube has a degradation speed which is adjusted so as to make it suitable for the connection of nerve gaps of more than 40 mm. The nerve regeneration-inducing tube includes collagen coated on the outer surface of a tubular body woven with fiber bundles where plural ultrafine fibers comprising a biodegradable and bioabsorbable polymer are bundled. The tubular body mostly comprises a first polymer which is biodegradable and bioabsorbable and a second polymer which has higher biodegradability and bioabsorbability than those of the first polymer.
    Type: Grant
    Filed: December 25, 2008
    Date of Patent: April 28, 2015
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Fumihiko Kajii, Hidenori Tanaka, Susumu Kashiwabara, Yuta Kawakatsu