Mitsui Minings & Melting Co., Ltd.

Nihon Dempa Kogyo Co., Ltd.

Honda Motor Co., Ltd.

Takashi Wakabayashi

Yunosuke Nakahara

Yoji Naka

Kiyotaka Yasuda

Hironori Iwakura

Masataka Ogasawara

Sumio Kato

Isamu Shimura

Chao Li

Yosuke Shibata

Yasuo Shimizu

Hiroyuki Horimura

Yuki Nagao

Ohki Houshito

Toshiaki Kimura

Yasunori Imada

Takahito Asanuma

Motoki Ito

Takahiko Sakaue

Yuunosuke Nakahara

Akihiro Nara

Yusuke Hosoi

Shinji Aoki

Shinichi Nakata

Atsunori Ono

Yohei Takahashi

Masateru Tsuji

Akiko Koga

Provided is a porous structure for exhaust purification catalysts having excellent light-off temperature characteristics. The porous structure for exhaust purification catalysts includes an oxygen storage component and an inorganic porous solid. The porous structure has a pore volume distribution such that the ratio of the pore volume of pores with a diameter of from 15 nm to less than 25 nm to the pore volume of pores with a diameter of from 5 nm to less than 15 nm is 1.3 to 2.5 as measured with a mercury porosimeter. The pore volume distribution preferably has at least one peak top in a pore diameter range of from 15 nm to less than 25 nm.

Porous structure for exhaust gas purification catalyst, exhaust gas purification catalyst using porous structure, and exhaust gas purification method

Ultrasonic probe

Provide is a new carrier for exhaust gas purification catalyst which exhibits excellent catalytic activity, particularly catalytic activity at a low temperature. Proposed is a carrier for exhaust gas purification catalyst composed of particles which contain a silicate or phosphate containing one kind or two or more kinds among the elements belonging to Group 1 and Group 2 in the periodic table.

Carrier for exhaust gas purification catalyst and exhaust gas purification catalyst

Provided is a novel palladium catalyst capable of efficiently purifying carbon monoxide (CO) and total hydrocarbons (THC) under a fuel-rich atmosphere even when palladium (Pd) is used as a catalyst active component. Proposed is a palladium monolayer catalyst for an exhaust gas from a saddle-riding-type vehicle, which is an exhaust gas purification catalyst for a saddle-riding-type vehicle to be installed in an exhaust gas passage in an internal combustion engine. The palladium monolayer catalyst includes a substrate, and a catalyst layer that has the form of a monolayer and contains palladium acting as a catalyst active component, an inorganic porous body acting as a catalyst carrier, ceria (CeO) particles acting as a promoter component, and barium.

Exhaust gas purification palladium monolayer catalyst for saddle-riding-type vehicle

An internal combustion engine exhaust gas purifying catalyst carrier has a core body formed of a CeO&#x2014;ZrOsolid solution or a CeO&#x2014;ZrO&#x2014;LaOsolid solution, and CeOsupported on the surface of the core body, wherein the core body has a CeOcontent of 5 to 35 mass % and an LaOcontent of 0 to 10 mass %, on the basis of the mass of the carrier, and the amount of CeOsupported on the core body is 5 to 17 mass %, on the basis of the mass of the carrier.

Carrier for internal-combustion engine exhaust gas purification catalyst

Provided is a palladium catalyst in which palladium (Pd) is used as a catalyst active component, and particularly a novel palladium catalyst which can purify CO and THC with high efficiency even under a fuel-rich atmosphere having a high space velocity (SV). Proposed is a palladium catalyst having a substrate and a catalyst layer that contains palladium acting as a catalyst active component, an inorganic porous material acting as a catalyst support and ceria (CeO) particles acting as a promoter component, in which a mass ratio (Pd/CeO) of a content of the palladium in the catalyst layer to a content of the ceria particles in the catalyst layer is 0.0014 to 0.6000.

Palladium catalyst

An apatite compound represented by general formula: A(PO)(OH)(wherein A represents Ba or a combination of Ba and Sr and/or Ca) is used as a carrier. This exhaust gas purifying catalyst is obtained by having the apatite compound carrier support a noble metal component.

Exhaust gas purifying catalyst and carrier

An exhaust gas purifying catalyst includes: a composite oxide represented by: (AMM') (SiN)O. A is a cation of at least one of La and Pr; M is a cation of at least one of Ba, Ca, and Sr; M&#x2032; is a cation of at least one of Nd, Y, Al, Pr, Ce, Sr, Li, and Ca; N is a cation of at least one of Fe, Cu, and Al. The following are satisfied: 6&#x2266;a&#x2266;10, 0&#x3c;w&#x3c;5, 0&#x2266;x&#x3c;5, 0&#x3c;w+x&#x2266;5, 0&#x2266;y&#x2266;3, 0&#x2266;z&#x2266;3, A&#x2260;M&#x2032;, and x&#x2260;0 when A is a cation of La. A noble metal ingredient which forms a solid solution with the composite oxide or is supported on the composite oxide, and an exhaust gas purifying catalyst product formed of a carrier made of a ceramic or metallic material, and a layer of the exhaust gas purifying catalyst supported on the carrier.

Exhaust gas purifying catalyst

The invention has a structure, in an acoustic lens for an ultrasonic probe comprising leg portions which are connected by a planar shape, and a lens portion which is provided on the leg portions and has curvature in the lengthwise direction, wherein the leg portions are made from an attenuation prevention material having the less ultrasonic propagation loss than for the lens portion. Moreover, the leg portions of the acoustic lens are formed with opposite end sides thereof in a bent L-shape. Furthermore, an ultrasonic probe is constructed by adhering onto a piezoelectric element group where a plurality of piezoelectric elements are arranged side by side, an acoustic lens provided with curvature in the lengthwise direction.

Acoustic lens and ultrasonic probe using the lens

The present invention relates to a conductive printed board which can be used as a common part and therefore offers high productivity, and an ultrasonic probe which uses this conductive printed board. In a conductive printed board having terminals which are provided either in a contiguous manner or at a defined array spacing, and are connected to conduction paths, terminals connected to the terminals and spaced with different array spacing from the defined array spacing are provided on the ends. The conductive printed board is a flexible printed board, and a plurality of piezo elements having excitation electrodes on both main faces are lined up at the defined array spacing. If the terminals are widely spaced, the object can connect as-is to the other terminals, and if the terminals are spaced narrowly, then the portion with the other terminals can be removed, allowing the terminals to be connected. Moreover, the present invention relates to a multicore cable for which the weight and diameter of the multicore cable are reduced, thus facilitating multifunctionality, and to an ultrasonic probe with excellent operability and functionality which uses this multicore cable. The multicore cable is constructed by winding a flexible printed board containing signal conductors helically within a flexible outer jacket.

Conductive printed board, multicore cable and ultrasonic probe using the same

Growing community of inventors

Saitama, Japan

Takashi Wakabayashi