Patents by Inventor Takeshi Narishige
Takeshi Narishige 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: 7767164Abstract: The present invention relates to a catalytic converter apparatus for purifying exhaust gas from an internal combustion engine for vehicles. The catalytic converter apparatus includes a first catalytic converter that holds a first catalyst and that is to be coupled to a side of the engine, and a second catalytic converter that holds a second catalyst and that is coupled to a rear of the first catalytic converter. Each of the first and second catalysts has a catalytic support on which a wash coat layer having a thickness equal to or less than 0.2 mm is formed. The wash coat layer includes a first wash coat layer and a second wash coat layer, and each of the first and second wash coat layers has voids therein. This catalytic converter apparatus achieves an improved purification property with a small number of cells and a small amount of noble metal.Type: GrantFiled: March 20, 2007Date of Patent: August 3, 2010Assignee: Honda Motor Co., Ltd.Inventors: Yoshiaki Matsuzono, Hirosuke Ohkubo, Takashi Iwamoto, Takeshi Narishige
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Publication number: 20070227130Abstract: The present invention relates to a catalytic converter apparatus for purifying exhaust gas from an internal combustion engine for vehicles. The catalytic converter apparatus includes a first catalytic converter that holds a first catalyst and that is to be coupled to a side of the engine, and a second catalytic converter that holds a second catalyst and that is coupled to a rear of the first catalytic converter. Each of the first and second catalysts has a catalytic support on which a wash coat layer having a thickness equal to or less than 0.2 mm is formed. The wash coat layer includes a first wash coat layer and a second wash coat layer, and each of the first and second wash coat layers has voids therein. This catalytic converter apparatus achieves an improved purification property with a small number of cells and a small amount of noble metal.Type: ApplicationFiled: March 20, 2007Publication date: October 4, 2007Inventors: Yoshiaki Matsuzono, Hirosuke Ohkubo, Takashi Iwamoto, Takeshi Narishige
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Patent number: 6559095Abstract: An exhaust gas purifying catalyst has an Ir powder. The Ir powder has a two peak particle size distribution, with a peak in a particle size D>25 nm region, and the other peak in a particle size D<25 nm region, respectively.Type: GrantFiled: March 27, 2001Date of Patent: May 6, 2003Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Tomomi Sugiyama, Kazuhide Terada, Takeshi Narishige
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Publication number: 20010041658Abstract: An exhaust gas purifying catalyst has an Ir powder. The Ir powder has a two peak particle size distribution, with a peak in a particle size D>25 nm region, and the other peak in a particle size D<25 nm region, respectively.Type: ApplicationFiled: March 27, 2001Publication date: November 15, 2001Applicant: Honda Giken Kogyo Kabushiki KaishaInventors: Tomomi Sugiyama, Kazuhide Terada, Takeshi Narishige
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Patent number: 6261990Abstract: A composite catalyst includes a first catalyst part containing an Ir catalyst and a second catalyst part covering the first catalyst part and containing a perovskite type composite oxide. The perovskite type composite oxide contributes mainly to oxidation reaction such as NO+O2→NO2 in an atmosphere of excess oxygen while the Ir catalyst contributes mainly to reduction reaction with HC (hydrocarbon) as a reducing agent such as NO2+HC+O2→N2+CO2+H2O.Type: GrantFiled: November 24, 1998Date of Patent: July 17, 2001Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Kazuhide Terada, Ken Ogawa, Takeshi Narishige, Tomomi Sugiyama, Naohiro Satou
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Patent number: 6008155Abstract: An exhaust emission control catalyst having an excellent NOx converting capability includes a modified alumina which has a .theta.-phase and an .alpha.-phase and has an .alpha.-conversion rate R in a range of 0.5 %.ltoreq.R.ltoreq.95 %, and a catalytic metal carried in the modified alumina, e.g., platinum (Pt). In addition, a catalyst including a catalyst material which is the above-described catalyst including the modified alumina and the catalytic metal, and an aluminosilicate or cerium oxide (CeO.sub.2), also has an excellent NOx converting capability.Type: GrantFiled: August 28, 1997Date of Patent: December 28, 1999Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Kazuhide Terada, Takeshi Narishige, Naohiro Satoh, Yoshikazu Fujisawa, Yoshiyuki Nakanishi
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Patent number: 5804526Abstract: An adsorbent exhibiting an excellent adsorption ability to nitrogen oxides (NO) is made from an oxide-based ceramics having an average crystallite grain size D in a range of D<500 .ANG., e.g., CeO.sub.2. A catalyst is formed from, for example, an cerium oxide (CeO.sub.2) and a zeolite. A content C of CeO.sub.2 in the catalyst is set in a range of 10% by weight .ltoreq.CA.ltoreq.80% by weight. The zeolite adsorbs hydrocarbon (HC). The hydrocarbon (HC) adsorbed is oxidized into active CHO which acts to reduce the nitrogen oxides (NO) adsorbed by the CeO.sub.2.Type: GrantFiled: December 11, 1996Date of Patent: September 8, 1998Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Naohiro Satoh, Kazuhide Terada, Takeshi Narishige, Yoshikazu Fujisawa
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Patent number: 5468567Abstract: A slide member includes a surface layer of a Pb alloy on a slide surface for a mating member, and the crystal form of the Pb alloy is formed such that the orientation index in a (h00) plane by Miller indices is in a range of 50 to 100%.Type: GrantFiled: May 9, 1994Date of Patent: November 21, 1995Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yoshikazu Fujisawa, Takeshi Narishige, Yuzuru Miyazaki
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Patent number: 5443920Abstract: A slide member includes a surface layer having a slide surface for sliding on a mating member, wherein the surface layer has metal crystals belonging to a cubic system with a crystal plane of high atomic density directed toward the slide surface and form the slide surface.Type: GrantFiled: March 2, 1994Date of Patent: August 22, 1995Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yoshikazu Fujisawa, Makoto Tsuji, Takeshi Narishige, Takahiro Gunji, Kazuhisa Okamoto
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Patent number: 5443919Abstract: A slide member includes a surface layer having a slide surface for sliding on a mating member, wherein the surface layer has metal crystals belonging to a cubic system with a crystal plane of high atomic density directed toward the slide surface and form the slide surface.Type: GrantFiled: March 2, 1994Date of Patent: August 22, 1995Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yoshikazu Fujisawa, Makoto Tsuji, Takeshi Narishige, Takahiro Gunji, Kazuhisa Okamoto
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Patent number: 5340660Abstract: A slide member includes a surface layer having a slide surface for sliding on a mating member, wherein the surface layer has metal crystals belonging to a cubic system with a crystal plane of high atomic density directed toward the slide surface and form the slide surface.Type: GrantFiled: July 20, 1992Date of Patent: August 23, 1994Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yoshikazu Fujisawa, Makoto Tsuji, Takeshi Narishige, Takahiro Gunji, Kazuhisa Okamoto
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Patent number: 5324596Abstract: A slide member includes a surface layer having a slide surface for a mating member. The surface layer has a plurality of pyramid-shaped projections protruding from a phantom plane thereby defining the slide surface along the phantom plane. The percent area A of the pyramid-shaped projections occupied in the slide surface is in a range of A.gtoreq.50%. The inclination angle .theta. of the pyramid-shaped projection formed by a line passing through its apex and the central portion of its base surface with respect to a reference line perpendicular to the phantom plane is in a range of 0.degree..ltoreq..theta..ltoreq.30.degree..Type: GrantFiled: May 12, 1993Date of Patent: June 28, 1994Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yoshikazu Fujisawa, Makoto Tsuji, Takeshi Narishige
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Patent number: 5322743Abstract: A slide member includes a surface layer having a slide surface for a mating member. The surface layer has a plurality of pyramid-shaped projections protruding from a phantom plane thereby defining the slide surface along the phantom plane. The percent area A of the pyramid-shaped projections occupied in the slide surface is in a range of A.gtoreq.50%. The inclination angle .theta. of the pyramid-shaped projection formed by a line passing through its apex and the central portion of its base surface with respect to a reference line perpendicular to the phantom plane is in a range of 0.degree..ltoreq..theta..ltoreq.30.degree..Type: GrantFiled: May 12, 1993Date of Patent: June 21, 1994Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yoshikazu Fujisawa, Makoto Tsuji, Takeshi Narishige
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Patent number: 5322742Abstract: A slide member includes a surface layer having a slide surface for a mating member. The surface layer has a plurality of pyramid shaped projections protruding from a phantom plane thereby defining the slide surface along the phantom plane. The percent area A of the pyramid-shaped projections occupied in the slide surface is in a range of A.gtoreq.50%. The inclination angle .theta. of the pyramid-shaped projection formed by a line passing through its apex and the central portion of its base surface with respect to a reference line perpendicular to the phantom plane is in a range of 0.degree..ltoreq..theta..ltoreq.30.degree..Type: GrantFiled: June 1, 1992Date of Patent: June 21, 1994Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yoshikazu Fujisawa, Makoto Tsuji, Takeshi Narishige
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Patent number: 5320912Abstract: A slide member includes a surface layer having a slide surface for a mating member. The surface layer has a plurality of pyramid-shaped projections protruding from a phantom plane thereby defining the slide surface along the phantom plane. The percent area A of the pyramid-shaped projections occupied in the slide surface is in a range of A.gtoreq.50%. The inclination angle .theta. of the pyramid-shaped projection formed by a line passing through its apex and the central portion of its base surface with respect to a reference line perpendicular to the phantom plane is in a range of 0.degree..ltoreq..theta..ltoreq.30.degree..Type: GrantFiled: May 13, 1993Date of Patent: June 14, 1994Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yoshikazu Fujisawa, Makoto Tsuji, Takeshi Narishige
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Patent number: 5310606Abstract: A slide member includes a surface layer of a Pb alloy on a slide surface for a mating member, and the crystal form of the Pb alloy is formed such that the orientation index in a (h00) plane by Miller indices is in a range of 50 to 100%.Type: GrantFiled: December 10, 1992Date of Patent: May 10, 1994Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yoshikazu Fujisawa, Takeshi Narishige, Yuzuru Miyazaki