Patents by Inventor Yoshiaki Nishijima
Yoshiaki Nishijima 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: 20240053261Abstract: The infrared absorber 1 is provided with a finely structured metal layer 2 which causes local surface plasmon resonance by absorption infrared light; a dielectric layer 3 under the finely structured metal layer, and a metal layer 4 under the dielectric layer 3. The dielectric layer 3 is stacked between the layers 2 and 4 and consists of an organic polymer material having a molecular bond whose vibration is excited by infrared absorption. Further, the gas sensor is provided with the infrared absorber as the light source and/or the photodetector.Type: ApplicationFiled: December 15, 2021Publication date: February 15, 2024Inventors: Yoshiaki NISHIJIMA, Hiromasa TAKASHIMA, Tsuyoshi UEDA, Tomohiro KAWAGUCHI, Soichiro SAKAI
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Patent number: 11215558Abstract: A nanostructure array including a base body and a nanostructure formed on the base body, in which a plurality of the nanostructures are arranged on the nanostructure array, the nanostructure is made of a metal having a surface plasmon and a property of absorbing and releasing hydrogen, the base body is made of a hydrogen-responsive material that reacts with hydrogen to reversibly change from a conductor to a dielectric substance, and a surface plasmon resonance occurs by light incident on the nanostructure.Type: GrantFiled: February 18, 2020Date of Patent: January 4, 2022Assignees: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY, TOKYO OHKA KOGYO CO., LTD.Inventors: Yoshiaki Nishijima, Shinji Okazaki, Takaaki Beni, Naoki Yamasaku, Takeshi Iwai
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Patent number: 11067506Abstract: A hydrogen storage metal is disposed on a base material in a predetermined shape and a predetermined size such that hydrogen is detected based on surface plasmon resonance induced by incident light. The hydrogen storage metal is formed of a film body containing palladium and a noble metal. A spectrum of the light having passed through the hydrogen storage metal in which hydrogen is stored has a peak in a wavelength band separated from an absorption spectrum C1 of carbon dioxide with respect to the light and an absorption spectra H1 to H3 of water with respect to the light.Type: GrantFiled: March 28, 2018Date of Patent: July 20, 2021Assignees: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY, TOKYO OHKA KOGYO CO., LTD.Inventors: Yoshiaki Nishijima, Takeshi Iwai, Isao Hirano
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Publication number: 20200264102Abstract: A nanostructure array including a base body and a nanostructure formed on the base body, in which a plurality of the nanostructures are arranged on the nanostructure array, the nanostructure is made of a metal having a surface plasmon and a property of absorbing and releasing hydrogen, the base body is made of a hydrogen-responsive material that reacts with hydrogen to reversibly change from a conductor to a dielectric substance, and a surface plasmon resonance occurs by light incident on the nanostructure.Type: ApplicationFiled: February 18, 2020Publication date: August 20, 2020Inventors: Yoshiaki NISHIJIMA, Shinji OKAZAKI, Takaaki BENI, Naoki YAMASAKU, Takeshi IWAI
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Publication number: 20200088634Abstract: A hydrogen storage metal is disposed on a base material in a predetermined shape and a predetermined size such that hydrogen is detected based on surface plasmon resonance induced by incident light. The hydrogen storage metal is formed of a film body containing palladium and a noble metal. A spectrum of the light having passed through the hydrogen storage metal in which hydrogen is stored has a peak in a wavelength band separated from an absorption spectrum C1 of carbon dioxide with respect to the light and an absorption spectra H1 to H3 of water with respect to the light.Type: ApplicationFiled: March 28, 2018Publication date: March 19, 2020Applicants: National University Corporation YOKOHAMA National University, TOKYO OHKA KOGYO CO., LTD.Inventors: Yoshiaki NISHIJIMA, Takeshi IWAI, Isao HIRANO
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Patent number: 9791366Abstract: A gas detector (10) includes a cell internal space (130) into which a target gas is supplied, the target gas exhibiting an absorption peak in an absorption spectrum; a light source (410) configured to generate light having at least a wavelength belonging to the absorption peak; and a photodetector (420) configured to detect the light that has emitted from the light source (410) and has propagated through the cell internal space (130). The gas detector (10) further includes a conductive thin film (220) in which a plurality of optical apertures (222) are regularly arranged such that a transmission peak in a transmission spectrum is superimposed over the absorption peak in the absorption spectrum along a wavelength axis. The conductive thin film (220) is provided on an optical path extending from the light source (410) to the photodetector (420), and is provided so as to be contactable with the target gas within the cell internal space (130).Type: GrantFiled: April 8, 2014Date of Patent: October 17, 2017Assignee: NATIONAL UNIVERSITY CORPORATION YOKOHAM NATIONAL UNIVERSITYInventors: Yoshiaki Nishijima, Yuta Adachi
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Patent number: 9534558Abstract: In a compression ignition internal combustion engine 20that generates electromagnetic wave plasma by emitting electromagnetic waves to a combustion chamber 21 during a period of a preceding injection, a control device 10 for internal combustion engine controls a fuel injection device 24 to perform, before a main injection, a preceding injection less in injection quantity than the main injection, while controlling a plasma generation device 30 to generate electromagnetic plasma by emitting electromagnetic waves to the combustion chamber 21 during the period of the preceding injection. The control device 10 controls a condition of heat production due to combustion of fuel from the main injection by controlling the amount of energy of the electromagnetic waves emitted to the combustion chamber 21 during the period of the preceding injection according to the operating condition of the internal combustion engine main body 22.Type: GrantFiled: January 10, 2012Date of Patent: January 3, 2017Assignee: IMAGINEERING, INC.Inventors: Yuji Ikeda, Shigeo Nomura, Yoshiaki Nishijima
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Publication number: 20160054220Abstract: A gas detector (10) includes a cell internal space (130) into which a target gas is supplied, the target gas exhibiting an absorption peak in an absorption spectrum; a light source (410) configured to generate light having at least a wavelength belonging to the absorption peak; and a photodetector (420) configured to detect the light that has emitted from the light source (410) and has propagated through the cell internal space (130). The gas detector (10) further includes a conductive thin film (220) in which a plurality of optical apertures (222) are regularly arranged such that a transmission peak in a transmission spectrum is superimposed over the absorption peak in the absorption spectrum along a wavelength axis. The conductive thin film (220) is provided on an optical path extending from the light source (410) to the photodetector (420), and is provided so as to be contactable with the target gas within the cell internal space (130).Type: ApplicationFiled: April 8, 2014Publication date: February 25, 2016Applicant: National University Corporation Yokohama National UniversityInventors: Yoshiaki Nishijima, Yuta Adachi
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Patent number: 9240286Abstract: The present invention has an object to provide a photoelectric conversion device which can be manufactured through a simple manufacturing process, achieve photoelectric conversion over a wide range of wavelength regions, and attain high photoelectric conversion efficiency even in the infrared wavelength region, a photodetection device, and a photodetection method.Type: GrantFiled: September 2, 2010Date of Patent: January 19, 2016Assignee: NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITYInventors: Hiroaki Misawa, Yoshiaki Nishijima, Kosei Ueno, Kei Murakoshi
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Publication number: 20160010610Abstract: A fuel injection device injects natural gas from a first injection hole of a first housing and injects light oil form a second injection hole of a second housing. A weld part as a fixation part fixes positions of the first injection hole and the second injection hole such that a spray of natural gas injected from the first injection hole and a spray of light oil injected from the second injection hole contact each other. Thus the spray of light oil self-ignites by compression of air in a cylinder of an internal combustion engine and the spray of natural gas burns by ignition from a flame of the self-ignited light oil.Type: ApplicationFiled: July 7, 2015Publication date: January 14, 2016Inventors: Tomoki FUJINO, Shinichiro KAWAKITA, Wakichi KONDOH, Yoshiaki NISHIJIMA, Hiroshi TAJIMA
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Publication number: 20140019029Abstract: In a compression ignition internal combustion engine 20 that generates electromagnetic wave plasma by emitting electromagnetic waves to a combustion chamber 21 during a period of a preceding injection, a control device 10 for internal combustion engine controls a fuel injection device 24 to perform, before a main injection, a preceding injection less in injection quantity than the main injection, while controlling a plasma generation device 30 to generate electromagnetic plasma by emitting electromagnetic waves to the combustion chamber 21 during the period of the preceding injection. The control device 10 controls a condition of heat production due to combustion of fuel from the main injection by controlling the amount of energy of the electromagnetic waves emitted to the combustion chamber 21 during the period of the preceding injection according to the operating condition of the internal combustion engine main body 22.Type: ApplicationFiled: January 10, 2012Publication date: January 16, 2014Applicant: IMAGINEERING, INC.Inventors: Yuji Ikeda, Shigeo Nomura, Yoshiaki Nishijima
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Patent number: 8603422Abstract: A gas separation and recovery apparatus that separates and recovers nitrogen oxides from a gas mixture includes: a liquid storing portion that stores a liquid, the liquid absorbing the nitrogen oxides; a gas-liquid contacting portion in which the liquid and the gas mixture contact with each other; and a liquid recovering portion that recovers the liquid after the liquid contacts the gas mixture. The liquid is an ionic liquid that chemically absorbs the nitrogen oxides.Type: GrantFiled: April 6, 2012Date of Patent: December 10, 2013Assignee: Denso CorporationInventors: Masatoshi Maruyama, Keiji Noda, Yuuki Tarusawa, Yoshiaki Nishijima, Mitsuhiro Kanakubo, Takashi Makino, Tatsuya Umeki, Hiroshi Nanjo
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Publication number: 20130054119Abstract: A control system for a combustion system is applied to a combustion system which has a fuel injector injecting a fuel directly into a combustion chamber and a water injector injecting water (non-combustible fluid) into the combustion chamber. When a combustion engine operates at high load, the water collides with a fuel spray which the fuel injector injects. When a combustion engine operates at low-load, the water injection starts before the fuel injection and the water injection terminates before the fuel injection starts. Thus, the misfire can be avoided and NOx can be decreased by water injection at low-load operation of a combustion engine.Type: ApplicationFiled: July 23, 2012Publication date: February 28, 2013Applicant: Denso CorporationInventors: Takamasa YOKOTA, Satoru Sasaki, Yoshiaki Nishijima
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Publication number: 20120325301Abstract: The present invention has an object to provide a photoelectric conversion device which can be manufactured through a simple manufacturing process, achieve photoelectric conversion over a wide range of wavelength regions, and attain high photoelectric conversion efficiency even in the infrared wavelength region, a photodetection device, and a photodetection method.Type: ApplicationFiled: September 2, 2010Publication date: December 27, 2012Inventors: Hiroaki Misawa, Yoshiaki Nishijima, Kosei Ueno, Kei Murakoshi
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Publication number: 20120298071Abstract: A combustion system of an internal combustion engine has a fuel injector injecting a fuel directly into a combustion chamber and a water injector injecting a water (non-combustible fluid) into the combustion chamber. The water collides with a fuel spray which the fuel injector injects. A penetrating force of the fuel spray is decreased and the fuel spray hardly reaches a cylinder wall surface. The injected fuel is combusted at a position away from the cylinder wall surface, so that the combustion heat transferred to the cylinder wall surface is reduced and the heat loss of the combustion can be decreased.Type: ApplicationFiled: May 17, 2012Publication date: November 29, 2012Applicant: DENSO CORPORATIONInventors: Munehisa Horibe, Satoru Sasaki, Yoshiaki Nishijima, Takamasa Yokota
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Publication number: 20120258030Abstract: A gas separation and recovery apparatus that separates and recovers nitrogen oxides from a gas mixture includes: a liquid storing portion that stores a liquid, the liquid absorbing the nitrogen oxides; a gas-liquid contacting portion in which the liquid and the gas mixture contact with each other; and a liquid recovering portion that recovers the liquid after the liquid contacts the gas mixture. The liquid is an ionic liquid that chemically absorbs the nitrogen oxides.Type: ApplicationFiled: April 6, 2012Publication date: October 11, 2012Applicant: DENSO CORPORATIONInventors: Masatoshi MARUYAMA, Keiji Noda, Yuuki Tarusawa, Yoshiaki Nishijima, Mitsuhiro Kanakubo, Takashi Makino, Tatsuya Umeki, Hiroshi Nanjo
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Patent number: 8211562Abstract: A battery pack includes: a plastic-made, elongated outer casing composed of interconnected peripheral walls to define an interior battery storage portion; and a battery accommodated in the battery storage portion inside the outer casing. The outer casing has a mounting protrusion to be attached to and project outwardly from an electronic equipment casing. An inner casing is incorporated inside the outer casing of the battery pack. The battery pack is constructed and arranged so that an outer battery, located outside the electronic equipment, is accommodated inside the inner casing.Type: GrantFiled: March 13, 2009Date of Patent: July 3, 2012Assignee: Sanyo Electric Co., Ltd.Inventors: Ichiro Miyamae, Yoshiaki Nishijima, Tomotsugu Ogawa
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Patent number: 8088336Abstract: A reducing gas generator generates reducing gas including ammonia. The generator includes a solid reductant and a heat-generating portion. The solid reductant is formed in a columnar shape. A cross-sectional surface of the solid reductant has a constant shape and is perpendicular to a central axis of the solid reductant. The heat-generating portion includes a heat-generating surface opposed to a lower surface of the solid reductant in a vertical direction thereof and in contact with an entire region of the lower surface, and a heating element that heats the heat-generating surface when energized, so that the solid reductant is heated and decomposed to generate the reducing gas.Type: GrantFiled: March 19, 2008Date of Patent: January 3, 2012Assignee: Denso CorporationInventors: Kazunori Suzuki, Masatoshi Kuroyanagi, Yoshiaki Nishijima
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Patent number: 8074444Abstract: An exhaust emission control device has an additive valve and a control unit to decrease nitrogen oxides contained in an exhaust gas by means of a reducing agent. The control unit sets a valve opening period of time and a valve closing period of time alternately elapsing in a repetition cycle. The control unit controls the valve to discharge the agent into the exhaust gas during each valve opening period and to stop discharging the agent during each valve closing period. The control unit sets the valve opening period to be shortened as a flow rate of the exhaust gas is lowered, so that a penetration force of the reducing agent is appropriately set. The control unit sets the repetition cycle at a value depending on the flow rate of the nitrogen oxides to sufficiently deoxidize the nitrogen oxides by means of the agent.Type: GrantFiled: April 9, 2008Date of Patent: December 13, 2011Assignees: Nippon Soken, Inc., Denso CorporationInventors: Shinichiro Kawakita, Keiji Ohshima, Yoshiaki Nishijima
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Patent number: 7976700Abstract: A water separation unit includes a water separation portion. The water separation portion includes a component separation wall, a liquid chamber, and a gas chamber. The separation wall divides the water separation portion between the liquid chamber and the gas chamber. Liquid fuel is led to the liquid chamber. The separation wall includes a separation membrane, which water selectively permeates to be separated from liquid fuel in the liquid chamber. Water passing through the separation wall is temporarily stored in the gas chamber. A fuel supply apparatus supplies liquid fuel in a fuel tank to an internal-combustion engine. The apparatus includes the water separation unit. The water separation portion is disposed integrally in one of the fuel tank and a passage leading from a filler opening into the fuel tank, such that the liquid chamber is located above the gas chamber in a vertical direction of the water separation portion.Type: GrantFiled: December 4, 2007Date of Patent: July 12, 2011Assignee: Denso CorporationInventors: Miyao Arakawa, Yoshiaki Nishijima, Masatoshi Kuroyanagi, Yoshimichi Kiyozumi