Patents by Inventor Hirosuke Sumida
Hirosuke Sumida 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: 20160325488Abstract: In thermal pressure joining of joining a metal member to a resin member, a metal member (11) and a resin member (12) are stacked one on the other, a press member (160) applies heat and pressure locally on the metal member to soften and melt the resin member, the resin member is then solidified, the press member (160) is pressed into the metal member (11) to a depth shallower than a joint boundary (13) between the metal and resin members to deform a portion (110) of the metal member directly under the press member such that the portion protrudes toward the resin member, and resin (121) melted on a surface of the resin member in a region (60) of the joint boundary directly under the press member flows to an outer periphery (61) of the region (60).Type: ApplicationFiled: January 7, 2015Publication date: November 10, 2016Applicant: MAZDA MOTOR CORPORATIONInventors: Koujirou TANAKA, Katsuya NISHIGUCHI, Hirosuke SUMIDA, Hiroyuki KAI, Yushi MATSUDA, Yuki KODA, Megumi KOBAYASHI, Tsuguhisa MIYAMOTO, Yukihiro SUGIMOTO, Nobuo SAKATE
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Patent number: 7871452Abstract: Disclosed is a particulate filter, which is adapted to be disposed in an exhaust passage of an engine to trap particulate matter contained in exhaust gas discharged from the engine. The particulate filter comprises a filter body having a porous partition wall which defines a plurality of exhaust gas channels allowing the exhaust gas to pass therethrough, and a catalyst layer formed on a surface of the porous partition wall. The catalyst layer includes a Zr-based composite oxide which contains zirconium (Zr), and a rare-earth metal except cerium, wherein a content ratio of an oxide of the non-cerium rare-earth metal to a total amount of ZrO2 and the oxide of the non-cerium rare-earth metal in the Zr-based composite oxide is set in the range of greater than 33 mol % to less than 40 mol %. The particulate filter of the present invention can achieve a higher PM burning rate to burn PM within a shorter period of time.Type: GrantFiled: October 1, 2008Date of Patent: January 18, 2011Assignee: Mazda Motor CorporationInventors: Hiroshi Yamada, Kenji Suzuki, Koichiro Harada, Kenji Okamoto, Akihide Takami, Susumu Mineoi, Hirosuke Sumida
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Publication number: 20090298673Abstract: An exhaust gas purification catalyst includes a catalyst layer formed on a support. The catalyst layer contains Ce-containing oxide particles having an oxygen storage/release capacity and a catalytic metal. The catalyst layer further contains a large number of iron oxide particles of 300 nm diameter or less that are dispersed therein and are in contact with the Ce-containing oxide particles. When observed by electron microscopy, the proportion of the area of iron oxide particles of 300 nm diameter or less to the total area of all of iron oxide particles in the catalyst layer is 30% or more.Type: ApplicationFiled: May 28, 2009Publication date: December 3, 2009Applicant: MAZDA MOTOR CORPORATIONInventors: Masaaki AKAMINE, Masahiko SHIGETSU, Hirosuke SUMIDA, Tatsuto FUKUSHIMA, Seiji MIYOSHI, Hiroshi YAMADA, Hideharu IWAKUNI, Koichiro HARADA
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Publication number: 20080269046Abstract: In an exhaust gas purification catalyst that contains an oxygen storage component containing Ce and Zr, alumina and a catalytic metal, a plurality of primary particles of the oxygen storage component and a plurality of primary particles of the alumina agglomerate to form each of mixed oxide particles and the catalytic metal includes Pd doped in the oxygen storage component particles to constitute each of the oxygen storage component particles with Ce and Zr and exposed at the surfaces of the oxygen storage component particles and Pd adhered to the surfaces of the oxygen storage component particles and the surfaces of the alumina particles.Type: ApplicationFiled: April 25, 2008Publication date: October 30, 2008Applicant: MAZDA MOTOR CORPORATIONInventors: Koji Minoshima, Seiji Miyoshi, Hideharu Iwakuni, Akihide Takami, Hirosuke Sumida
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Publication number: 20060276331Abstract: In an exhaust gas purification catalyst, particles of a catalytic metal-doped, Ce—Zr-based second mixed oxide are carried on the surfaces of particlcs of a Cc-Zr-based first mixed oxide. The second mixed oxide contains Ce and Zr as metals forming its constituents. Catalytic metal atoms are placed at least one of at and between crystal lattice points of the second mixed oxide. The first mixed oxide contains Ce and Zr as metals forming its constituents but no catalytic metal. Thus, the concentration of catalytic metal on the surfaces of catalyst particles is increased.Type: ApplicationFiled: April 25, 2006Publication date: December 7, 2006Applicant: MAZDA MOTOR CORPORATIONInventors: Masaaki Akamine, Hideharu Iwakuni, Hirosuke Sumida
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Publication number: 20030134743Abstract: An exhaust gas purifying system and a catalyst used for the system prevents NOx absorbent from being poisoned by a sulfur compound to keep NOx absorption performance. The catalyst has at least an inner and an outer layer on a support material, the inner layer having NOx absorbent capable of absorbing NOx and a sulfur compound in the exhaust gas produced from combustion of a lean fuel mixture, releasing the NOx into the exhaust gas and substantially stopping absorbing the sulfur compound when a rich mixture is burnt, and the outer layer having a sulfur compound absorbent capable of absorbing the sulfur compound in the exhaust gas produced from combustion of a lean fuel mixture and capable of discharging the sulfur compound into the exhaust gas when a rich fuel mixture is burnt while the engine operates in a lean-burn zone. NOx is absorbed by the NOx absorbent in the inner layer and the sulfur compound is adsorbed in the sulfur compound absorbent in the outer layer.Type: ApplicationFiled: September 14, 2001Publication date: July 17, 2003Inventors: Hirosuke Sumida, Yuki Koda, Makoto Kyogoku, Hideharu Iwakuni, Hiroshi Yamada, Kenji Okamoto, Akihide Takami
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Patent number: 6432872Abstract: An object of the present invention is to provide a composition for use in adsorption treatment which is easy to handle; a method for easily preparing the composition in the form of grains without inhibiting its adsorption ability; products such as an adsorption treatment device and a filter for air-cleaning formed with the composition; and a method of adsorption treatment. The composition for use in adsorption treatment of the present invention includes an adsorbing substance which is reactive with components to be adsorbed in the presence of moisture, a water-absorbing substance, and a binder, wherein the binder is 1.3 to 8 weight percent with respect to the water-absorbing substance.Type: GrantFiled: July 18, 2000Date of Patent: August 13, 2002Assignee: Mazda Motor CorporationInventors: Yoshinori Tsushio, Tuyoshi Nishijima, Taeko Shimizu, Ichiro Kitayama, Osamu Takayama, Hirosuke Sumida
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Patent number: 6420306Abstract: An exhaust gas emission control catalyst includes an under catalyst layer containing at least one of barium and lanthanum and an over catalyst layer containing an agent for absorbing water in a gas, at least one of the under catalyst layer and over catalyst layer containing catalytic metal.Type: GrantFiled: November 30, 1998Date of Patent: July 16, 2002Assignee: Mazda Motor CorporationInventors: Takahiro Kurokawa, Akihide Takami, Makoto Kyogoku, Hideharu Iwakuni, Kenji Okamoto, Hirosuke Sumida, Kenichi Yamamoto, Hiroshi Murakami, Hiroshi Yamada
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Publication number: 20020031452Abstract: In a catalyst for exhaust gas purification which comprises (a) a NOx absorbent material which absorbs NOx in an exhaust gas in an environment of excess oxygen whose exhaust gas oxygen concentration level is high, whereas, when the exhaust gas oxygen concentration level becomes lower in a given temperature range, the NOx absorbent material releases the absorbed NOx and (b) a precious metal, the exhaust gas purification catalyst further comprises an oxygen storage material which releases a larger amount of oxygen in the given temperature range in comparison with other temperature ranges. As a result of such arrangement, the NOx absorption efficiency of the NOx absorbent material in an environment of excess oxygen of high exhaust gas oxygen concentration level, i.e., the lean NOx purification rate thereof, can be improved.Type: ApplicationFiled: June 29, 2001Publication date: March 14, 2002Inventors: Kenji Okamoto, Hiroshi Yamada, Seiji Miyoshi, Akihide Takami, Kenichi Yamamoto, Hirosuke Sumida
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Publication number: 20010049337Abstract: An exhaust gas emission control catalyst includes an under catalyst layer containing at least one of barium and lanthanum and an over catalyst layer containing an agent for absorbing water in a gas, at least one of the under catalyst layer and over catalyst layer containing catalytic metal.Type: ApplicationFiled: November 30, 1998Publication date: December 6, 2001Applicant: MAZDA MOTOR CORPORATIONInventors: TAKAHIRO KUROKAWA, AKIHIDE TAKAMI, MAKOTO KYOGOKU, HIDEHARU IWAKUNI, KENJI OKAMOTO, HIROSUKE SUMIDA, KENICHI YAMAMOTO, HIROSHI MURAKAMI, HIROSHI YAMADA
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Publication number: 20010036901Abstract: An exhaust gas purifying catalyst includes at least an under catalytic layer disposed on a substrate containing a NOx absorbent which absorbs NOx in exhaust gas under existence of oxygen, releases absorbed NOx when an oxygen concentration of exhaust gas lowers and is restrained from absorbing NOx by sulfur compounds in exhaust gas and an outer oxide layer disposed over the under catalytic layer and containing a Ce—Zr composite oxide.Type: ApplicationFiled: September 28, 1999Publication date: November 1, 2001Inventors: YUKI KODA, HIROSUKE SUMIDA, MAKOTO KYOGOKU
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Patent number: 5958826Abstract: An exhaust gas emission control catalyst includes an under catalyst layer containing at least one of barium and lanthanum and an over catalyst layer containing an agent for absorbing water in a gas, at least one of the under catalyst layer and over catalyst layer containing catalytic metal.Type: GrantFiled: July 17, 1997Date of Patent: September 28, 1999Assignee: Mazda Motor CorporationInventors: Takahiro Kurokawa, Akihide Takami, Makoto Kyogoku, Hideharu Iwakuni, Kenji Okamoto, Hirosuke Sumida, Kenichi Yamamoto, Hiroshi Murakami
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Patent number: 5677258Abstract: An exhaust gas emission control catalyst includes an under catalyst layer containing at least one of barium and lanthanum and an over catalyst layer containing an agent for absorbing water in a gas, at least one of the under catalyst layer and over catalyst layer containing catalytic metal.Type: GrantFiled: April 29, 1996Date of Patent: October 14, 1997Assignee: Mazda Motor CorporationInventors: Takahiro Kurokawa, Akihide Takami, Makoto Kyogoku, Hideharu Iwakuni, Kenji Okamoto, Hirosuke Sumida, Kenichi Yamamoto, Hiroshi Murakami, Hiroshi Yamada