Patents by Inventor Takayuki Hirao
Takayuki Hirao 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: 20110236801Abstract: Separators (5A, 5B, 6) and membrane-electrode assemblies (2) of a fuel cell stack (1) are alternately stacked in a guide box (40). The separators (5A, 5B, 6) each have groove-like gas paths (10A, 10B). Powder of an adhesive agent (7) is adhered in advance to the surfaces of the separators (5A, 5B, 6), except the gas paths (10A, 10B), through photosensitive drums (31A, 31B) to which the powder is adsorbed in a given pattern. The separators (5A, 5B, 6) and the membrane-electrode assemblies (2), stacked in the guide box (40), are heated and compressed by a press (43) and heaters (40C) to obtain a unitized fuel cell stack (1).Type: ApplicationFiled: June 10, 2011Publication date: September 29, 2011Inventors: Akira Fujiki, Yukihiro Maekawa, Takeharu Kuramochi, Masahiko Katsu, Takayuki Hirao, Takeshi Shimizu, Masanori Iwamoto, Sadao Miki, Haruhiko Suzuki, Yoshiki Muto, Kaoru Eguchi, Masahiro Omata, Hiroshi Saitou
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Publication number: 20110209896Abstract: An FEP pellet having a volatile content of 0.2% by weight or less. The FEP pellet satisfies the following requirements (i) and (ii) when used to form a insulating material coating a core wire by extrusion coating at a coating speed of 2,800 ft/min.: (i) an adhesive strength between the insulating material and said core wire of 0.8 kg or more; and (ii) an average number of cone-breaks in the insulating material of one or less per 50,000 feet of the coated core wire.Type: ApplicationFiled: March 2, 2011Publication date: September 1, 2011Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Hideki KONO, Takayuki HIRAO, George LIN, Kazuyuki FUKUDA
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Patent number: 7988784Abstract: It is used a substrate main body 1 having a side face 1b and a pair of main faces 1a and an underlying film 2 of a single crystal of a nitride of a metal belonging to the group III formed at least on one main face of the substrate main body 1. A single crystal 3 of a nitride of a metal belonging to the group III is grown on the main face 1a of the substrate main body 1 by a liquid phase process. The underlying film 2 has a shape of a convex figure in a plan view. A surface 4 without the underlying film thereon surrounds the entire circumference of the underlying film 2. The single crystal 3 of a nitride of a metal belonging to the group III grown on the underlying film 2 is not brought into contact with a single crystal of a nitride of a metal belonging to group III formed on another underlying film.Type: GrantFiled: July 23, 2010Date of Patent: August 2, 2011Assignee: NGK Insulators, Ltd.Inventors: Takayuki Hirao, Katsuhiro Imai, Mikiya Ichimura
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Patent number: 7981572Abstract: Separators (5A, 5B, 6) and membrane-electrode assemblies (2) of a fuel cell stack (1) are alternately stacked in a guide box (40). The separators (5A, 5B, 6) each have groove-like gas paths (10A, 10B). Powder of an adhesive agent (7) is adhered in advance to the surfaces of the separators (5A, 5B, 6), except the gas paths (10A, 10B), through photosensitive drums (31A, 31B) to which the powder is adsorbed in a given pattern. The separators (5A, 5B, 6) and the membrane-electrode assemblies (2), stacked in the guide box (40), are heated and compressed by a press (43) and heaters (40C) to obtain a unitized fuel cell stack (1).Type: GrantFiled: October 28, 2004Date of Patent: July 19, 2011Assignee: Nissan Motor Co., Ltd.Inventors: Akira Fujiki, Yukihiro Maekawa, Takeharu Kuramochi, Masahiko Katsu, Takayuki Hirao, Takeshi Shimizu, Masanori Iwamoto, Sadao Miki, Haruhiko Suzuki, Yoshiki Muto, Kaoru Eguchi, Masahiro Omata, Hiroshi Saitou
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Patent number: 7923519Abstract: An FEP pellet having a volatile content of 0.2% by weight or less. The FEP pellet satisfies the following requirements (i) and (ii) when used to form a insulating material coating a core wire by extrusion coating at a coating speed of 2,800 ft/min.: (i) an adhesive strength between the insulating material and said core wire of 0.8 kg or more; and (ii) an average number of cone-breaks in the insulating material of one or less per 50,000 feet of the coated core wire.Type: GrantFiled: June 8, 2007Date of Patent: April 12, 2011Assignee: Daikin Industries, Ltd.Inventors: Hideki Kono, Takayuki Hirao, George Lin, Kazuyuki Fukuda
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Publication number: 20110014478Abstract: The present invention provides a molded article for a biodiesel fuel having excellent durability against a biodiesel fuel. The invention is a molded article for a biodiesel fuel of which the surface to be contacted with a biodiesel fuel is made of a fluorine-containing ethylenic resin.Type: ApplicationFiled: March 26, 2009Publication date: January 20, 2011Inventors: Shigehito Sagisaka, Hirokazu Komori, Takeshi Inaba, Takayuki Hirao, Takeshi Shimono
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Publication number: 20100307404Abstract: It is used a substrate main body 1 having a side face 1b and a pair of main faces 1a and an underlying film 2 of a single crystal of a nitride of a metal belonging to the group III formed at least on one main face of the substrate main body 1. A single crystal 3 of a nitride of a metal belonging to the group III is grown on the main face 1a of the substrate main body 1 by a liquid phase process. The underlying film 2 has a shape of a convex figure in a plan view. A surface 4 without the underlying film thereon surrounds the entire circumference of the underlying film 2 The single crystal 3 of a nitride of a metal belonging to the group III grown on the underlying film 2 is not brought into contact with a single crystal of a nitride of a metal belonging to group III formed on another underlying film.Type: ApplicationFiled: July 23, 2010Publication date: December 9, 2010Applicant: NGK Insulators, Ltd.Inventors: Takayuki Hirao, Katsuhiro Imai, Mikiya Ichimura
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Publication number: 20070271770Abstract: Separators (5A, 5B, 6) and membrane-electrode assemblies (2) of a fuel cell stack (1) are alternately stacked in a guide box (40). The separators (5A, 5B, 6) each have groove-like gas paths (10A, 10B). Powder of an adhesive agent (7) is adhered in advance to the surfaces of the separators (5A, 5B, 6), except the gas paths (10A, 10B), through photosensitive drums (31A, 31B) to which the powder is adsorbed in a given pattern. The separators (5A, 5B, 6) and the membrane-electrode assemblies (2), stacked in the guide box (40), are heated and compressed by a press (43) and heaters (40C) to obtain a unitized fuel cell stack (1).Type: ApplicationFiled: October 28, 2004Publication date: November 29, 2007Inventors: Akira Fujiki, Yukihiro Maekawa, Takeharu Kuramochi, Masahiko Katsu, Takayuki Hirao, Takeshi Shimizu, Masanori Iwamoto, Sadao Miki, Haruhiko Suzuki, Yoshiki Muto, Kaoru Eguchi, Masahiro Omata, Hiroshi Saitou
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Publication number: 20070243388Abstract: An FEP pellet having a volatile content of 0.2% by weight or less. The FEP pellet satisfies the following requirements (i) and (ii) when used to form a insulating material coating a core wire by extrusion coating at a coating speed of 2,800 ft/min.: (i) an adhesive strength between the insulating material and said core wire of 0.8 kg or more; and (ii) an average number of cone-breaks in the insulating material of one or less per 50,000 feet of the coated core wire.Type: ApplicationFiled: June 8, 2007Publication date: October 18, 2007Inventors: Hideki Kono, Takayuki Hirao, George Lin, Kazuyuki Fukuda
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Publication number: 20070154628Abstract: This invention relates to a manufacturing method for a polymer electrolyte fuel cell which is formed by laminating a first gas diffusion layer (6A) and a first separator (7A) on one surface of a membrane electrode assembly (9), and laminating a second gas diffusion layer (6B) and a second separator (7B) on the other surface of the membrane electrode assembly (9). An adhesive is applied to a surface of the first separator (7A) which contacts the first gas diffusion layer (6A), the adhesive is applied to a surface of the second separator (7B) which contacts the second gas diffusion layer (6B), and the first separator (7A), first gas diffusion layer (6A), membrane electrode assembly (9), second gas diffusion layer (6B), and second separator (7B) are disposed between a pair of pressing jigs (113, 123) so as to be laminated in the described sequence. An integrated fuel cell is obtained by applying heat and compression to the first separator (7A) and second separator (7B) using the pressing jigs (113, 123).Type: ApplicationFiled: December 28, 2004Publication date: July 5, 2007Applicant: NISSAN MOTOR CO., LTD.Inventors: Akira Fujiki, Yukihiro Maekawa, Takeshi Shimizu, Takayuki Hirao, Masanori Iwamoto, Sadao Miki, Haruhiko Suzuki, Hiroshi Saitou
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Patent number: 7105619Abstract: A fluorine-containing copolymer obtained by copolymerizing tetrafluoroethylene, hexafluoropropylene and perfluoro vinyl ether as component monomers, wherein a weight ratio of tetrafluoroethylene, hexafluoropropylene and perfluoro vinyl ether units constituting the fluorine-containing copolymer is 70 to 95: 5 to 20: 0 to 10, respectively; the fluorine-containing copolymer having: a melt flow rate of 30 (g/10 minutes) or more; a volatile content index of 0.2% by weight or less; and a stress relaxation modulus G(t) (unit: dyn/cm2) which satisfies the following formula at t=0.1 second when measured at a temperature of 310° C.: G(0.1)>7×106×X?1.62?3000 where X denotes the melt flow rate (unit: g/10 minutes). Also disclosed is an insulating material composed of the fluorine-containing copolymer and an insulated cable having a core conductor coated with the fluorine-containing copolymer.Type: GrantFiled: January 17, 2003Date of Patent: September 12, 2006Assignee: Daikin Industries, Ltd.Inventors: Hideki Kono, Takayuki Hirao, George Lin, Kazuyuki Fukuda
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Publication number: 20050118431Abstract: An FEP pellet having a volatile content of 0.2% by weight or less. The FEP pellet satisfies the following requirements (i) and (ii) when used to form a insulating material coating a core wire by extrusion coating at a coating speed of 2,800 ft/min.: (i) an adhesive strength between the insulating material and said core wire of 0.8 kg or more; and (ii) an average number of cone-breaks in the insulating material of one or less per 50,000 feet of the coated core wire.Type: ApplicationFiled: January 17, 2003Publication date: June 2, 2005Applicant: DAIKIN INDUSTRIES, LTD. Umeda Center BuildingInventors: Hideki Kono, Takayuki Hirao, George Lin, Kazuyuki Fukuda
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Publication number: 20050049375Abstract: A fluorine-containing copolymer obtained by copolymerizing tetrafluoroethylene, hexafluoropropylene and perfluoro vinyl ether as component monomers, wherein a weight ratio of tetrafluoroethylene, hexafluoropropylene and perfluoro vinyl ether units constituting the fluorine-containing copolymer is 70 to 95: 5 to 20: 0 to 10, respectively; the fluorine-containing copolymer having: a melt flow rate of 30 (g/10 minutes) or more; a volatile content index of 0.2% by weight or less; and a stress relaxation modulus G(t) (unit: dyn/cm2) which satisfies the following formula at t=0.1 second when measured at a temperature of 310° C.: G(0.1)>7×106×X?1.62?3000 where X denotes the melt flow rate (unit: g/10 minutes). Also disclosed is an insulating material composed of the fluorine-containing copolymer and an insulated cable having a core conductor coated with the fluorine-containing copolymer.Type: ApplicationFiled: January 17, 2003Publication date: March 3, 2005Inventors: Hideki Kono, Takayuki Hirao, George Lin, Kazuyuki Fukuda
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Patent number: 6743508Abstract: An FEP pellet having a volatile content of 0.2% by weight or less. The FEP pellet satisfies the following requirements (i) and (ii) when used to form a insulating material coating a core wire by extrusion coating at a coating speed of 2,800 ft/min.: (i) an adhesive strength between the insulating material and said core wire of 0.8 kg or more; and (ii) an average number of cone-breaks in the insulating material of one or less per 50,000 feet of the coated core wire.Type: GrantFiled: January 17, 2002Date of Patent: June 1, 2004Assignee: Daikin America, Inc.Inventors: Hideki Kono, Takayuki Hirao, George Lin, Kazuyuki Fukuda
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Patent number: 6703464Abstract: A fluorine-containing copolymer obtained by copolymerizing tetrafluoroethylene, hexafluoropropylene and perfluoro vinyl ether as component monomers, wherein a weight ratio of tetrafluoroethylene, hexafluoropropylene and perfluoro vinyl ether units constituting the fluorine-containing copolymer is 70 to 95:5 to 20:0 to 10, respectively; the fluorine-containing copolymer having: a melt flow rate of 30 (g/10 minutes) or more; a volatile content index of 0.2% by weight or less; and a stress relaxation modulus G(t) (unit: dyn/cm2) which satisfies the following formula at t=0.1 second when measured at a temperature of 310° C.: G(0.1)>7×106×X−1.6143−3000 where X denotes the melt flow rate (unit: g/10 minutes). Also disclosed is an insulating material composed of the fluorine-containing copolymer and an insulated cable having a core conductor coated with the fluorine-containing copolymer.Type: GrantFiled: January 17, 2002Date of Patent: March 9, 2004Assignee: Daikin America, Inc.Inventors: Hideki Kono, Takayuki Hirao, George Lin, Kazuyuki Fukuda
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Publication number: 20030157324Abstract: An FEP pellet having a volatile content of 0.2% by weight or less. The FEP pellet satisfies the following requirements (i) and (ii) when used to form a insulating material coating a core wire by extrusion coating at a coating speed of 2,800 ft/min.: (i) an adhesive strength between the insulating material and said core wire of 0.8 kg or more; and (ii) an average number of cone-breaks in the insulating material of one or less per 50,000 feet of the coated core wire.Type: ApplicationFiled: January 17, 2002Publication date: August 21, 2003Applicant: DAIKIN AMERICA, INC.Inventors: Hideki Kono, Takayuki Hirao, George Lin, Kazuyuki Fukuda
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Publication number: 20030153701Abstract: A fluorine-containing copolymer obtained by copolymerizing tetrafluoroethylene, hexafluoropropylene and perfluoro vinyl ether as component monomers, wherein a weight ratio of tetrafluoroethylene, hexafluoropropylene and perfluoro vinyl ether units constituting the fluorine-containing copolymer is 70 to 95:5 to 20:0 to 10, respectively; the fluorine-containing copolymer having: a melt flow rate of 30 (g/10 minutes) or more; a volatile content index of 0.2% by weight or less; and a stress relaxation modulus G(t) (unit: dyn/cm2) which satisfies the following formula at t=0.1 second when measured at a temperature of 310° C.Type: ApplicationFiled: January 17, 2002Publication date: August 14, 2003Applicant: DAIKIN AMERICA, INC.Inventors: Hideki Kono, Takayuki Hirao, George Lin, Kazuyuki Fukuda
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Publication number: 20030033901Abstract: A cam lobe piece of a built-up type camshaft for an internal combustion engine. The built-up type camshaft includes a hollow shaft fixedly inserted in a shaft opening of the cam lobe piece upon diametrical expansion of the hollow shaft. The cam lobe piece comprises a base circle section having the shaft opening, and a cam lobe section formed integral with the base circle section.Type: ApplicationFiled: July 2, 2002Publication date: February 20, 2003Applicant: NISSAN MOTOR CO., LTD.Inventors: Yoshimi Sugaya, Makoto Iwakiri, Takao Mitsuno, Kou Takayama, Hirokazu Fukagawa, Takayuki Hirao, Kimio Nishimura, Kouji Itakura, Mitsushi Oyanagi, Yutaka Mabuchi, Akira Fujiki, Yukihiro Maekawa, Yoshio Okada