Patents by Inventor Keiichi Narita
Keiichi Narita 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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Patent number: 9574157Abstract: A lubricating oil composition contains a lubricating base oil and components (A) to (D): (A) a primary amine; (B) a tertiary amine; (C) at least one of metal sulfonate, metal phenate and metal salicylate; and (D) at least one of acid phosphate and acid phosphite.Type: GrantFiled: March 12, 2013Date of Patent: February 21, 2017Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Keiichi Narita, Toshiaki Iwai
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Publication number: 20170014806Abstract: Provided is an exhaust gas purification catalyst with excellent durability against exhaust gas including a poisoning substance. The exhaust gas purification catalyst includes a porous substrate, a catalyst coating layer formed on the porous substrate, and a dummy coating layer formed on the outermost surface of the catalyst coating layer. The catalyst coating layer has a carrier and a noble metal catalyst supported on the carrier. The dummy coating layer includes a carrier having at least alumina and does not include a noble metal catalyst. The dummy coating layer is formed to have a length which, from the end on the exhaust gas inlet side, is 10% to 70% of the entire length of the catalyst coating layer along the exhaust gas flow direction.Type: ApplicationFiled: December 9, 2014Publication date: January 19, 2017Applicant: CATALER CORPORATIONInventors: Takahiro HARADA, Keiichi NARITA, Michio TANAKA, Hironobu KUNIOKU, Ryota NAKASHIMA
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Patent number: 9506010Abstract: A lubricating oil composition is provided by mixing a lubricant base oil with components (A) to (C) as follows: (A) a tertiary amine represented by a formula (1) below, where: R1 is a hydrocarbon group having 16 to 22 carbon atoms and R2 and R3 independently represent a hydrocarbon group having 1 to 2 carbon atoms, R2 and R3 being adapted to form a heterocyclic ring with terminal ends thereof being bonded; (B) at least one of acid phosphate and acid phosphite; and (C) at least one of metal sulfonate, metal phenate and metal salicylate.Type: GrantFiled: September 15, 2010Date of Patent: November 29, 2016Assignee: IDEMITSU KOSAN CO., LTD.Inventor: Keiichi Narita
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Publication number: 20160186091Abstract: A lubricating oil composition contains: a first base oil with a kinematic viscosity at 100 degrees C. in a range from 1.5 mm2/s to 3.5 mm2/s; a second base oil with a kinematic viscosity at 100 degrees C. in a range more than 3.5 mm2/s but not more than 100 mm2/s; polymethacrylate with a mass average molecular weight in a range from 1×104 to 4×104; and a sulfur compound. The lubricating oil composition has a kinematic viscosity at 100 degrees C. in a range from 5 mm2/s to 6 mm2/s and a viscosity index of 200 or more.Type: ApplicationFiled: March 3, 2016Publication date: June 30, 2016Applicant: IDEMITSU KOSAN CO., LTD.Inventor: Keiichi NARITA
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Patent number: 9358535Abstract: An exhaust gas-purifying catalyst includes first particles of oxygen storage material, second particles of one or more acidic oxides interposed between the first particles, and third particles of one or more precious metal elements interposed between the first particles, wherein a spectrum of a characteristic X-ray intensity for one of constituent elements of the acidic oxide(s) other than oxygen and a spectrum of a characteristic X-ray intensity for one of the precious metal element(s) that are obtained by performing a line analysis using energy-dispersive X-ray spectrometry along a length of 500 nm have a correlation coefficient of 0.70 or more.Type: GrantFiled: January 23, 2012Date of Patent: June 7, 2016Assignee: CATALER CORPORATIONInventors: Satoshi Matsueda, Akimasa Hirai, Kenichi Taki, Keiichi Narita, Asuka Hori, Masahiro Kusaka
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Patent number: 9347018Abstract: A lubricating oil composition for automatic transmission including (A) a lubricant base oil having a kinematic viscosity at 100° C. of from 1.5 to 20 mm2/s, (B) a polymethacrylate based viscosity index improver, and (C) a sulfur based compound having an acid value of not more than 1.0 mg-KOH/g and represented by the following general formula (1): S—(CH2CH2COOR)2??(1) (in the formula, R represents a hydrocarbon group having from 8 to 30 carbon atoms), which has a high transmission torque capacity and satisfactory gear change shock characteristics and attains excellent fuel efficiency, is provided. Also, a lubricating oil composition for automatic transmission which is a lubricating oil having a low viscosity and a high viscosity index and which, despite this, not only has excellent shear stability and fatigue resistance (durability) but has a high transmission torque capacity and satisfactory gear change shock characteristics and attains excellent fuel efficiency, is provided.Type: GrantFiled: January 28, 2010Date of Patent: May 24, 2016Assignee: IDEMITSU KOSAN CO., LTD.Inventor: Keiichi Narita
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Patent number: 9295945Abstract: An exhaust gas-purifying catalyst includes first particles of oxygen storage material, second particles of one or more rare-earth elements other than cerium and/or compounds thereof interposed between the first particles, and third particles of one or more precious metal elements interposed between the first particles, wherein a spectrum of a characteristic X-ray intensity for one of the rare-earth element(s) and a spectrum of a characteristic X-ray intensity for one of the precious metal element(s) that are obtained by performing a line analysis using energy-dispersive X-ray spectrometry along a length of 500 nm have a correlation coefficient of 0.68 or more.Type: GrantFiled: January 23, 2012Date of Patent: March 29, 2016Assignee: CATALER CORPORATIONInventors: Satoshi Matsueda, Akimasa Hirai, Kenichi Taki, Keiichi Narita, Asuka Hori, Masahiro Kusaka
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Publication number: 20150197704Abstract: A lubricating oil composition, which contains a base oil, a boron-containing bisalkyl succinimide, a boron-containing bisalkenyl succinimide, or both, an amide, and a dispersed polymethacrylate. The lubricating oil composition is used for transmissions, such as Dual Clutch Transmissions.Type: ApplicationFiled: June 28, 2013Publication date: July 16, 2015Inventors: Toshiaki Iwai, Keiichi Narita, Daisuke Takekawa
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Patent number: 9029305Abstract: Provided is a lubricating oil composition containing a base oil which includes a mineral oil and/or a synthetic oil, and compounded therein, (A) at least one phosphorus-containing compound selected from phosphoric acid monoesters, phosphoric acid diesters and phosphorous acid monoesters, each having a C1 to C8 hydrocarbon group or groups and (B) a tertiary amine compound having C6 to C10 hydrocarbon groups as substituents thereof. The lubricating oil composition provides both a high metal to metal friction coefficient and an excellent wear resistance and is suitably used in a continuously variable transmission.Type: GrantFiled: January 9, 2009Date of Patent: May 12, 2015Assignee: Idemitsu Kosan Co., Ltd.Inventor: Keiichi Narita
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Patent number: 8993475Abstract: An excellent oxygen storage capacity is achieved even in the case used for a long period of time under high temperature conditions. An oxygen storage material contains a first particle made of a composite oxide of cerium and zirconium or a composite oxide of cerium, a rare-earth element other than cerium and zirconium, a second particle including a composite oxide of a rare-earth element, an alkaline-earth element and zirconium, and a precious metal. A part of the precious metal forms a solid solution with the composite oxide included in the second particle.Type: GrantFiled: June 22, 2007Date of Patent: March 31, 2015Assignees: Cataler Corporation, Toyota Jidosha Kabushiki KaishaInventors: Mareo Kimura, Keiichi Narita, Akimasa Hirai, Akiya Chiba, Naoto Miyoshi, Kazunobu Ishibashi, Takaaki Kanazawa, Takeru Yoshida, Hirohisa Tanaka, Mari Uenishi, Isao Tan, Masashi Taniguchi
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Patent number: 8975204Abstract: The present invention relates to a catalyst for purifying exhaust gases emitted from the internal combustion engines. The exhaust-gas-purifying catalyst in this invention, comprising: a catalyst support substrate and a plurality of catalyst layers formed on a surface of the catalyst support substrate and having an exterior-surface layer for forming a surface of the plural catalyst layers, and the exterior-surface layer including a loading layer formed by fireproof inorganic oxide; at least one catalytic metal selected from the group consisting of platinum, palladium and rhodium, and supported on the loading layer; stabilized zirconia loaded on the loading layer; and cerium-zirconium composite oxide loaded on the loading layer, and the stabilized zirconia including zirconia and oxide formed by at least one additive member selected from the group consisting of yttrium, neodymium, praseodymium and lanthanum.Type: GrantFiled: October 28, 2004Date of Patent: March 10, 2015Assignee: Cataler CorporationInventors: Asuka Hori, Keiichi Narita, Akimasa Hirai
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Publication number: 20140378357Abstract: A lubricating oil composition contains a lubricating base oil and components (A) to (D): (A) a primary amine; (B) a tertiary amine; (C) at least one of metal sulfonate, metal phenate and metal salicylate; and (D) at least one of acid phosphate and acid phosphite.Type: ApplicationFiled: March 12, 2013Publication date: December 25, 2014Inventors: Keiichi Narita, Toshiaki Iwai
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Publication number: 20140364350Abstract: A lubricating oil composition contains: a first base oil with a kinematic viscosity at 100 degrees C. in a range from 1.5 mm2/s to 3.5 mm2/s; a second base oil with a kinematic viscosity at 100 degrees C. in a range more than 3.5 mm2/s but not more than 100 mm2/s; polymethacrylate with a mass average molecular weight in a range from 1×104 to 4×104; and a sulfur compound. The lubricating oil composition has a kinematic viscosity at 100 degrees C. in a range from 5 mm2/s to 6 mm2/s and a viscosity index of 200 or more.Type: ApplicationFiled: November 29, 2012Publication date: December 11, 2014Applicant: IDEMITSU KOSAN CO., LTD.Inventor: Keiichi Narita
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Publication number: 20140038812Abstract: A high NOx-purifying performance at high temperature conditions is achieved with a small amount of precious metal used. An exhaust gas-purifying catalyst includes a substrate, a lower layer formed on the substrate and including a first composite oxide, palladium and platinum, and an upper layer formed on the lower layer and including a second composite oxide and rhodium. The first composite oxide includes cerium, zirconium, and an element selected from the group consisting of rare-earth elements other than cerium and alkaline-earth elements. A mass ratio of platinum with respect to palladium falls within a range of 1/50 to 1/20. The second composite oxide includes zirconium and an element selected from the group consisting of rare-earth elements other than cerium and alkaline-earth elements and has an atomic ratio of cerium with respect to zirconium smaller than that of the first composite oxide.Type: ApplicationFiled: October 4, 2013Publication date: February 6, 2014Applicant: CATALER CORPORATIONInventors: Asuka Hori, Akimasa Hirai, Keiichi Narita
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Patent number: 8598100Abstract: A lubricant additive which comprises a succinimide compound or a boronization product thereof is advantageously used for preparation of a lubricant composition which can maintain the property of anti-shudder for a long time without decreasing the transmission torque capacity or the friction coefficient between metals.Type: GrantFiled: June 23, 2004Date of Patent: December 3, 2013Assignee: Idemitsu Kosan Co., Ltd.Inventors: Hiroaki Koshima, Shinichi Yanagi, Keiichi Narita, Hidetoshi Koga
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Patent number: 8569198Abstract: An exhaust gas-purifying catalyst includes first particles of oxygen storage material, second particles of one or more alkaline-earth metal elements and/or compounds thereof interposed between the first particles, and third particles of one or more precious metal elements interposed between the first particles. A spectrum of a first characteristic X-ray intensity for one of the one or more alkaline-earth metal elements and a spectrum of a second characteristic X-ray intensity for one of the one or more precious metal elements that are obtained by performing a line analysis using energy-dispersive X-ray spectrometry along a length of 500 nm have a correlation coefficient ?(AE,PM) of 0.70 or more.Type: GrantFiled: February 22, 2012Date of Patent: October 29, 2013Assignee: Cataler CorporationInventors: Sho Hoshino, Akimasa Hirai, Kenichi Taki, Keiichi Narita, Satoshi Matsueda, Asuka Hori, Masahiro Kusaka
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Patent number: 8361925Abstract: The exhaust gas-purifying catalyst includes at least one of a first composite oxide represented by a formula A(Al2-xBx)O4 and a second composite oxide represented by a formula (Al2-yCy)O3, wherein element A is a divalent transition metal other than platinum-group elements, each of elements B and C is a transition metal other than platinum-group elements, x satisfies 0<x<2, and y satisfies 0<y<2.Type: GrantFiled: April 22, 2010Date of Patent: January 29, 2013Assignees: Cataler Corporation, Daihatsu Motor Co., Ltd.Inventors: Satoshi Matsueda, Mareo Kimura, Hiroto Yoshida, Keiichi Narita, Hirohisa Tanaka, Mari Uenisha, Masashi Taniguchi
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Patent number: 8318632Abstract: An exhaust gas purification catalyst includes a substrate, and a first catalyst layer formed on the substrate, the first catalyst layer containing palladium and/or platinum and alumina doped with an alkaline-earth metal element. The exhaust gas purification catalyst has a correlation coefficient ?Al,AE given by the following formula of 0.75 or more: ? Al , AE = C Al , AE ? Al ? ? AE .Type: GrantFiled: June 17, 2011Date of Patent: November 27, 2012Assignee: Cataler CorporationInventors: Satoshi Matsueda, Akimasa Hirai, Kenichi Taki, Keiichi Narita, Yuji Yabuzaki, Daisuke Ochiai
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Publication number: 20120149557Abstract: An exhaust gas-purifying catalyst includes first particles of oxygen storage material, second particles of one or more alkaline-earth metal elements and/or compounds thereof interposed between the first particles, and third particles of one or more precious metal elements interposed between the first particles. A spectrum of a first characteristic X-ray intensity for one of the one or more alkaline-earth metal elements and a spectrum of a second characteristic X-ray intensity for one of the one or more precious metal elements that are obtained by performing a line analysis using energy-dispersive X-ray spectrometry along a length of 500 nm have a correlation coefficient ?(AE,PM) of 0.70 or more.Type: ApplicationFiled: February 22, 2012Publication date: June 14, 2012Inventors: Sho Hoshino, Akimasa Hirai, Kenichi Taki, Keiichi Narita, Satoshi Matsueda, Asuka Hori, Masahiro Kusaka
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Publication number: 20120149619Abstract: A lubricating oil composition is provided by mixing a lubricant base oil with components (A) to (C) as follows: (A) a tertiary amine represented by a formula (1) below, where: R1 is a hydrocarbon group having 16 to 22 carbon atoms and R2 and R3 independently represent a hydrocarbon group having 1 to 2 carbon atoms, R2 and R3 being adapted to form a heterocyclic ring with terminal ends thereof being bonded; (B) at least one of acid phosphate and acid phosphite; and (C) at least one of metal sulfonate, metal phenate and metal salicylate.Type: ApplicationFiled: September 15, 2010Publication date: June 14, 2012Applicant: Idemitsu Kosan Co., Ltd.Inventor: Keiichi Narita