Patents by Inventor Akiyoshi Tamai
Akiyoshi Tamai 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: 20240026090Abstract: Polyamide fine particles include a polymer or a copolymer including a repeating structure unit represented by Formula (1) as a main component, wherein a ratio (r/ABET) of a porosity r occupying a particle surface and a BET specific surface area ABET that is a specific surface area of the particle surface measured by a BET method is 6.0 or more and 100.0 or less: wherein x is an integer of 2 or more and 3 or less.Type: ApplicationFiled: November 24, 2021Publication date: January 25, 2024Inventors: Ken Komiya, Akiyoshi Tamai, Kenichi Utazaki
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Patent number: 11629243Abstract: A polyamide resin composition makes it possible to obtain a molded article having excellent fluidity, excellent prying strength, and excellent adhesivity with metal. The polyamide resin composition includes 100 parts by mass of a polyamide resin (A) and 0.1 part by mass or more and 10 parts by mass or less of an ammonium salt (B) composed of a C6-12 aliphatic dicarboxylic acid and ammonia.Type: GrantFiled: July 7, 2020Date of Patent: April 18, 2023Assignee: Toray Industries, Inc.Inventors: Nobuhiro Morioka, Akiyoshi Tamai, Hideyuki Umetsu
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Publication number: 20220204729Abstract: A polyamide resin composition makes it possible to obtain a molded article having excellent fluidity, excellent prying strength, and excellent adhesivity with metal. The polyamide resin composition includes 100 parts by mass of a polyamide resin (A) and 0.1 part by mass or more and 10 parts by mass or less of an ammonium salt (B) composed of a C6-12 aliphatic dicarboxylic acid and ammonia.Type: ApplicationFiled: July 7, 2020Publication date: June 30, 2022Inventors: Nobuhiro Morioka, Akiyoshi Tamai, Hideyuki Umetsu
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Patent number: 11136447Abstract: A polyamide resin composition includes 100 parts by weight of a polyamide resin (A), 0.1 to 50 parts by weight of a fire retardant (B), 0.001 to 1 part by weight of a metal and/or salt thereof (C), and 0.001 to 1 part by weight of a compound (D) as represented by formula [I]: QX [I] wherein in formula [I], Q represents an aromatic hydrocarbon group or an alicyclic hydrocarbon group and X represents a 5-membered heterocyclic ring group, Q and X forming a covalent bond or a fused ring.Type: GrantFiled: November 10, 2017Date of Patent: October 5, 2021Assignee: Toray Industries, Inc.Inventors: Akiyoshi Tamai, Hiroshi Nakagawa, Masaru Akita, Hideyuki Umetsu
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Publication number: 20200062925Abstract: A polyamide resin composition includes 100 parts by weight of a polyamide resin (A), 0.1 to 50 parts by weight of a fire retardant (B), 0.001 to 1 part by weight of a metal and/or salt thereof (C), and 0.001 to 1 part by weight of a compound (D) as represented by formula [I]: QX [I] wherein in formula [I], Q represents an aromatic hydrocarbon group or an alicyclic hydrocarbon group and X represents a 5-membered heterocyclic ring group, Q and X forming a covalent bond or a fused ring.Type: ApplicationFiled: November 10, 2017Publication date: February 27, 2020Inventors: Akiyoshi Tamai, Hiroshi Nakagawa, Masaru Akita, Hideyuki Umetsu
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Patent number: 10391676Abstract: A fiber-reinforced multilayered pellet includes a sheath layer and a core layer, the sheath layer being made of a resin composition containing a thermoplastic resin (a1) and a fibrous filler (b1), wherein the fibrous filler (b1) has a weight-average fiber length (Lw) of 0.1 mm to less than 0.5 mm and a weight-average fiber length/number-average fiber length ratio (Lw/Ln) of 1.0 to less than 1.8, the core layer being made of a resin composition containing a thermoplastic resin (a2) and a fibrous filler (b2), wherein the fibrous filler (b2) has a weight-average fiber length (Lw) of 0.5 mm to less than 15.0 mm and a weight-average fiber length/number-average fiber length ratio (Lw/Ln) of 1.8 to less than 5.0.Type: GrantFiled: January 27, 2015Date of Patent: August 27, 2019Assignee: Toray Industries, Inc.Inventors: Akiyoshi Tamai, Kimihiko Hattori, Kenichi Utazaki
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Patent number: 9803061Abstract: A carbon fiber-reinforced thermoplastic resin composition includes a thermoplastic resin (A), a carbon fiber (B), and a titanium compound (C), an amount of the thermoplastic resin (A) being 10 to 65% by weight, an amount of the carbon fiber (B) being 35 to 90% by weight, based on 100% by weight of the total amount of the thermoplastic resin (A) and the carbon fiber (B), and an amount of the titanium compound (C) being 0.01 to 5 parts by weight, based on 100 parts by weight of the total amount of the thermoplastic resin (A) and the carbon fiber (B).Type: GrantFiled: November 19, 2012Date of Patent: October 31, 2017Assignee: Toray Industries, Inc.Inventors: Kimihiko Hattori, Akiyoshi Tamai, Kenichi Utazaki
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Publication number: 20170001336Abstract: A fiber-reinforced multilayered pellet includes a sheath layer and a core layer, the sheath layer being made of a resin composition containing a thermoplastic resin (a1) and a fibrous filler (b1), wherein the fibrous filler (b1) has a weight-average fiber length (Lw) of 0.1 mm to less than 0.5 mm and a weight-average fiber length/number-average fiber length ratio (Lw/Ln) of 1.0 to less than 1.8, the core layer being made of a resin composition containing a thermoplastic resin (a2) and a fibrous filler (b2), wherein the fibrous filler (b2) has a weight-average fiber length (Lw) of 0.5 mm to less than 15.0 mm and a weight-average fiber length/number-average fiber length ratio (Lw/Ln) of 1.8 to less than 5.0.Type: ApplicationFiled: January 27, 2015Publication date: January 5, 2017Inventors: Akiyoshi Tamai, Kimihiko Hattori, Kenichi Utazaki
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Publication number: 20140296414Abstract: A carbon fiber-reinforced thermoplastic resin composition includes a thermoplastic resin (A), a carbon fiber (B), and a titanium compound (C), an amount of the thermoplastic resin (A) being 10 to 65% by weight, an amount of the carbon fiber (B) being 35 to 90% by weight, based on 100% by weight of the total amount of the thermoplastic resin (A) and the carbon fiber (B), and an amount of the titanium compound (C) being 0.01 to 5 parts by weight, based on 100 parts by weight of the total amount of the thermoplastic resin (A) and the carbon fiber (B).Type: ApplicationFiled: November 19, 2012Publication date: October 2, 2014Inventors: Kimihiko Hattori, Akiyoshi Tamai, Kenichi Utazaki
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Patent number: 8664334Abstract: A resin composition is described that is excellent in strength, impact resistance, heat resistance and moldability, while further allowing for a reduction in the amount of CO2 needed for its production. The resin composition includes a styrene-based resin (A), an aliphatic polyester (B) and at least one species selected from a compatibilizer (C) and a dicarboxylic anhydride (D), wherein the compatibilizer is preferably at least one species selected from: (C-1) a methyl methacrylate polymer; (C-2) a vinyl-based polymer to which an epoxy unit or acid anhydride unit is copolymerized; (C-3) a graft polymer in which a methyl methacrylate unit is grafted to a rubbery polymer; and (C-4) a block copolymer having a polylactide segment and a vinyl-based polymer segment.Type: GrantFiled: July 11, 2011Date of Patent: March 4, 2014Assignee: Toray Industries, Inc.Inventors: Sadanori Kumazawa, Akiyoshi Tamai, Hiroyuki Ohme, Sadayuki Kobayashi
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Publication number: 20110269907Abstract: A resin composition is described that is excellent in strength, impact resistance, heat resistance and moldability, while further allowing for a reduction in the amount of CO2 needed for its production. The resin composition includes a styrene-based resin (A), an aliphatic polyester (B) and at least one species selected from a compatibilizer (C) and a dicarboxylic anhydride (D), wherein the compatibilizer is preferably at least one species selected from: (C-1) a methyl methacrylate polymer; (C-2) a vinyl-based polymer to which an epoxy unit or acid anhydride unit is copolymerized; (C-3) a graft polymer in which a methyl methacrylate unit is grafted to a rubbery polymer; and (C-4) a block copolymer having a polylactide segment and a vinyl-based polymer segment.Type: ApplicationFiled: July 11, 2011Publication date: November 3, 2011Applicant: TORAY INDUSTRIES, INC.Inventors: Sadanori KUMAZAWA, Akiyoshi Tamai, Hiroyuki Ohme, Sadayuki Kobayashi
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Patent number: 7999021Abstract: A resin composition is described that is excellent in strength, impact resistance, heat resistance and moldability, while further allowing for a reduction in the amount of CO2 needed for its production. The resin composition includes a styrene-based resin (A), an aliphatic polyester (B) and at least one species selected from a compatibilizer (C) and a dicarboxylic anhydride (D), wherein the compatibilizer is preferably at least one species selected from: (C-1) a methyl methacrylate polymer; (C-2) a vinyl-based polymer which an epoxy unit or acid anhydride unit is copolymerized; (C-3) a graft polymer in which a methyl methacrylate unit is grafted to a rubbery polymer; and (C-4) a block copolymer having a polylactide segment and a vinyl-based polymer segment.Type: GrantFiled: July 31, 2006Date of Patent: August 16, 2011Assignee: Toray Industries, Inc.Inventors: Sadanori Kumazawa, Akiyoshi Tamai, Hiroyuki Ohme, Sadayuki Kobayashi, Akinori Kanomata, Koji Yamauchi
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Patent number: 7964666Abstract: The present invention is a thermoplastic resin composition which is obtained by adding a specific modified vinyl copolymer having a specific intrinsic viscosity to a composition comprising a styrene-based resin and a polyamide resin. The thermoplastic resin composition has excellent flowability and has a far better surface appearance than conventional ones while satisfactorily retaining rigidity, heat resistance, chemical resistance, and impact resistance at room and low temperatures.Type: GrantFiled: July 14, 2005Date of Patent: June 21, 2011Assignee: Toray Industries, Inc.Inventors: Takuya Morishita, Akiyoshi Tamai, Akiko Tanaka, Makiko Saito
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Patent number: 7956126Abstract: A styrene-based resin composition that can be effectively used as a structural material owing to its excellent mechanical properties and also as a functional material owing to its excellent regularity and a method for manufacturing a styrene-based resin composition structurally controllable in nanometer order to micrometer order. The styrene-based resin composition includes (A) a styrene-based resin, (B) a thermoplastic resin other than a styrene-based resin, (c1) a modified styrene-based polymer and (c2) a polycarbonate-based graft polymer.Type: GrantFiled: February 27, 2006Date of Patent: June 7, 2011Assignee: Toray Industries, Inc.Inventors: Akiyoshi Tamai, Shinichiro Ochiai, Sadayuki Kobayashi
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Publication number: 20100160505Abstract: The present invention provides a resin composition excellent in strength, impact resistance, heat resistance and moldability and further, of low environmental load capable of decreasing CO2 exhaustion in its production. The present invention is a resin composition comprising a styrene-based resin (A), an aliphatic polyester (B) and at least one species selected from a compatibilizer (C) and a dicarboxylic anhydride (D), and the compatibilizer is preferably at least one species described below.Type: ApplicationFiled: July 31, 2006Publication date: June 24, 2010Inventors: Sadanori Kumazawa, Akiyoshi Tamai, Hiroyuki Ohme, Sadayuki Kobayashi, Akinori Kanomata, Koji Yamauchi
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Publication number: 20080176999Abstract: A styrene-based resin composition comprising (A) a styrene-based resin, (B) a thermoplastic resin other than styrene-based resins, (c1) a modified styrene-based polymer and (c2) a polycarbonate-based graft polymer.Type: ApplicationFiled: February 27, 2006Publication date: July 24, 2008Inventors: Akiyoshi Tamai, Shinichiro Ochiai, Sadayuki Kobayashi
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Publication number: 20080071024Abstract: The present invention is a thermoplastic resin composition which is obtained by adding a specific modified vinyl copolymer having a specific intrinsic viscosity to a composition comprising a styrene-based resin and a polyamide resin. The thermoplastic resin composition has excellent flowability and has a far better surface appearance than conventional ones while satisfactorily retaining rigidity, heat resistance, chemical resistance, and impact resistance at room and low temperatures.Type: ApplicationFiled: July 14, 2005Publication date: March 20, 2008Inventors: Takuya Morishita, Akiyoshi Tamai, Akiko Tanaka, Makiko Saito
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Publication number: 20060006641Abstract: A flange structure includes a main part 10 having a flange 14, internally provided with a fluid passage 12 and serving also as a body of a fluid device, a plate member 16 attached to the joining surface of the flange 14 of the main part 10 so as to hold a gasket 17 on the joining surface, and a connecting tube 20 inserted through the plate member 16 into the fluid passage 12 and fixed to the plate member 16 so as to extend obliquely upward toward the outside of the plate member 16.Type: ApplicationFiled: July 7, 2005Publication date: January 12, 2006Inventors: Masatoshi Hada, Akiyoshi Tamai
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Patent number: 6441069Abstract: A flame-retardant resin composition comprising (A) 100 parts by weight of a styrenic resin, (B) 1 to 30 parts by weight of a phosphate ester compound and (C) 0.1 to 10 parts by weight of a phosphate ester compound having a specific structure, and amolding product formed of the same impart a high flame retardance to the styrenic resin without using an organic halogen compound, and are also excellent in mechanical properties, impact resistance and moldability.Type: GrantFiled: May 9, 2000Date of Patent: August 27, 2002Assignee: Toray Industries, Inc.Inventors: Masato Honma, Akiyoshi Tamai, Shinichi Tamura