Patents by Inventor Masatoshi Maruyama
Masatoshi Maruyama 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: 9407805Abstract: An electronic device of the present invention has a flat-type device case whose front surface is provided with an imaging section and which is covered by a foldable cover, and includes an open/close detecting section which detects an open/close angle of the cover when the cover covers the device case, and outputs a detection signal for causing the imaging section to perform imaging.Type: GrantFiled: July 10, 2013Date of Patent: August 2, 2016Assignee: Casio Computer Co., LtdInventors: Masatoshi Ohtaka, Masatoshi Maruyama, Yasunori Chiba, Yasuaki Ogawa
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Patent number: 9297287Abstract: An exhaust gas control apparatus includes a control device controlling a urea addition valve for adding urea from an upstream side of a NOx reduction catalyst. The control device obtains an ammonia adsorption amount distribution through the NOx reduction catalyst. When an ammonia adsorption amount in a predetermined part on a downstream side equals or exceeds a predetermined threshold, the control device controls the urea addition valve to stop the urea supply or reduce the amount thereof. The urea addition valve is controlled based on an adsorption amount distribution obtained from a model on which the catalyst is divided into cells such that an ammonia adsorption amount in a first cell positioned furthest upstream equals or exceeds a predetermined threshold close to a saturation adsorption amount and an ammonia adsorption amount in a second cell positioned downstream of the first cell reaches a predetermined target value smaller than the threshold.Type: GrantFiled: September 21, 2011Date of Patent: March 29, 2016Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION, KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Shinya Hirota, Shunsuke Toshioka, Akira Mikami, Koichiro Fukuda, Sakutaro Hoshi, Takashi Endo, Ryoichi Hibino, Matsuei Ueda, Akihiko Asano, Takafumi Yamauchi, Akira Shichi, Makoto Koike, Masatoshi Maruyama, Masakazu Sakata
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Patent number: 8670916Abstract: A fuel injection system for an internal combustion engine is provided which works to correct the pressure of fuel, as measured by a pressure sensor, using a pressure change corresponding to a change in quantity of the fuel in a common rail within a pressure change compensating time Tp to determine a pump discharge pressure Ptop. This compensates for an error in determining the pump discharge pressure Ptop which arises from propagation of the pressure of fuel from a pump to the pressure sensor. The pressure change compensating time Tp is the sum of a time T1 elapsed between sampling the output of the pressure sensor before a calculation start time when the pump discharge pressure is to start to be calculated and the calculation start time and a time T2 required for the pressure to transmit from the outlet of the pump to the pressure sensor.Type: GrantFiled: February 17, 2012Date of Patent: March 11, 2014Assignee: Denso CorporationInventor: Masatoshi Maruyama
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Publication number: 20140028865Abstract: An electronic device of the present invention has a flat-type device case whose front surface is provided with an imaging section and which is covered by a foldable cover, and includes an open/close detecting section which detects an open/close angle of the cover when the cover covers the device case, and outputs a detection signal for causing the imaging section to perform imaging.Type: ApplicationFiled: July 10, 2013Publication date: January 30, 2014Inventors: Masatoshi Ohtaka, Masatoshi Maruyama, Yasunori Chiba, Yasuaki Ogawa
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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: 20130247543Abstract: An exhaust gas control apparatus includes a control device controlling a urea addition valve for adding urea from an upstream side of a NOx reduction catalyst. The control device obtains an ammonia adsorption amount distribution through the NOx reduction catalyst. When an ammonia adsorption amount in a predetermined part on a downstream side equals or exceeds a predetermined threshold, the control device controls the urea addition valve to stop the urea supply or reduce the amount thereof. The urea addition valve is controlled based on an adsorption amount distribution obtained from a model on which the catalyst is divided into cells such that an ammonia adsorption amount in a first cell positioned furthest upstream equals or exceeds a predetermined threshold close to a saturation adsorption amount and an ammonia adsorption amount in a second cell positioned downstream of the first cell reaches a predetermined target value smaller than the threshold.Type: ApplicationFiled: September 21, 2011Publication date: September 26, 2013Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, DENSO CORPORATIONInventors: Shinya Hirota, Shunsuke Toshioka, Akira Mikami, Koichiro Fukuda, Sakutaro Hoshi, Takashi Endo, Ryoichi Hibino, Matsuei Ueda, Akihiko Asano, Takafumi Yamauchi, Akira Shichi, Makoto Koike, Masatoshi Maruyama, Masakazu Sakata
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Patent number: 8418438Abstract: An exhaust gas purifying system for a diesel engine has an ECU, a passage of exhaust gas, a unit having SCR catalyst, a NOx sensor placed at a downstream side of the unit, and a urea water adding valve placed at an upstream side of the unit. The SCR catalyst in the unit selectively adsorbs ammonia, and selectively purifies NOx contained in an exhaust gas emitted from the diesel engine by the adsorbed ammonia. The ECU changes the urea water adding amount, and performs abnormality diagnosis based on the detection result of the NOx sensor while changing an adding amount of the urea water. The ECU uses a first condition to indicate the presence of an excess NOx amount in the exhaust gas, and a second condition to indicate there is no error cause by the ammonia adsorption on the SCR catalyst.Type: GrantFiled: April 13, 2010Date of Patent: April 16, 2013Assignee: Denso CorporationInventors: Osamu Shimomura, Masakazu Sakata, Masatoshi Maruyama, Kazuharu Tochikawa
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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: 8283097Abstract: To provide a process for efficiently producing a toner for developing an electrostatic charge image, which is scarcely susceptible to aggregation of the toner and free from blocking during the storage or from soiling the image forming apparatus and which is excellent in image characteristics. A process for producing a toner for developing an electrostatic charge image, characterized by supplying a monomer into a dispersion containing wax and a polymerizable monomer having a C8-100 hydrocarbon group, carrying out the polymerization, followed by flocculation treatment.Type: GrantFiled: November 21, 2005Date of Patent: October 9, 2012Assignee: Mitsubishi Chemical CorporationInventors: Masatoshi Maruyama, Hiroya Kodama, Masaya Oota, Shiho Sano
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Publication number: 20120215421Abstract: A fuel injection system for an internal combustion engine is provided which works to correct the pressure of fuel, as measured by a pressure sensor, using a pressure change corresponding to a change in quantity of the fuel in a common rail within a pressure change compensating time Tp to determine a pump discharge pressure Ptop. This compensates for an error in determining the pump discharge pressure Ptop which arises from propagation of the pressure of fuel from a pump to the pressure sensor. The pressure change compensating time Tp is the sum of a time T1 elapsed between sampling the output of the pressure sensor before a calculation start time when the pump discharge pressure is to start to be calculated and the calculation start time and a time T2 required for the pressure to transmit from the outlet of the pump to the pressure sensor.Type: ApplicationFiled: February 17, 2012Publication date: August 23, 2012Applicant: DENSO CORPORATIONInventor: Masatoshi MARUYAMA
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Patent number: 8209966Abstract: An exhaust emission control device is used for an engine and is applied to an exhaust gas purifying system. The system has an NOx catalyst disposed in an exhaust passage of the engine to promote selective purification of NOx in exhaust gas performed by ammonia, which is a reducing agent for reducing NOx, and a reducing agent adding device for adding the reducing agent to an upstream side of the catalyst in a flow direction of exhaust gas. The device includes a catalyst temperature detecting device for detecting temperature of the catalyst, a reaction ratio calculating device for calculating a reaction ratio, which is a ratio of a reaction amount of ammonia to a reaction amount of NOx in the catalyst, based on the temperature of the catalyst, and an ammonia consumed amount calculating device for calculating a consumed amount of ammonia in the catalyst based on the reaction ratio.Type: GrantFiled: May 14, 2009Date of Patent: July 3, 2012Assignees: Denso Corporation, Nippon Soken, Inc.Inventors: Masakazu Sakata, Masatoshi Maruyama, Osamu Shimomura
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Patent number: 8201397Abstract: An SCR catalyst is provided in an exhaust pipe of an engine and a urea solution addition valve is provided upstream of the SCR catalyst in the exhaust pipe. An ECU controls urea solution addition quantity of the urea solution addition valve based on ammonia adsorption quantity to the SCR catalyst. The ECU calculates the ammonia adsorption quantity in the SCR catalyst based on time-series data of an ammonia balance between ammonia supply to the SCR catalyst accompanying the urea solution addition of the urea solution addition valve and ammonia consumption in the SCR catalyst. The ECU calculates NOx quantity introduced into the SCR catalyst or a parameter correlated with the NOx quantity and performs initialization of the ammonia adsorption quantity at timing decided based on a result of the calculation.Type: GrantFiled: May 22, 2009Date of Patent: June 19, 2012Assignees: Denso Corporation, Nippon SokenInventors: Osamu Shimomura, Masatoshi Maruyama, Masakazu Sakata
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Patent number: 8176730Abstract: An SCR catalyst is provided in an exhaust pipe of an engine and a urea solution addition valve is provided upstream of the SCR catalyst in the exhaust pipe. An ECU calculates ammonia adsorption quantity of the SCR catalyst and controls urea solution addition quantity, which is added by the urea solution addition valve, based on the ammonia adsorption quantity. The ECU obtains temperature of the SCR catalyst or temperature information correlated with the temperature through measurement or estimation. The ECU switches an execution mode of the urea solution addition control based on the catalyst temperature or the temperature information. Thus, reducing agent addition control can be performed suitably and eventually NOx purification in a NOx catalyst (i.e., SCR catalyst) can be performed suitably.Type: GrantFiled: June 2, 2009Date of Patent: May 15, 2012Assignees: Denso Corporation, Nippon Soken, Inc.Inventors: Osamu Shimomura, Masakazu Sakata, Masatoshi Maruyama
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Publication number: 20100257844Abstract: An exhaust gas purifying system for a diesel engine has an ECU, a passage of exhaust gas, a unit having SCR catalyst, a NOx sensor placed at a downstream side of the unit, and a urea water adding valve placed at an upstream side of the unit. The SCR catalyst in the unit selectively adsorbs ammonia, and selectively purifies NOx contained in an exhaust gas emitted from the diesel engine by the adsorbed ammonia. The ECU changes the urea water adding amount, and performs abnormality diagnosis based on the detection result of the NOx sensor while changing an adding amount of the urea water. The ECU uses a first condition to indicate the presence of an excess NOx amount in the exhaust gas, and a second condition to indicate there is no error cause by the ammonia adsorption on the SCR catalyst.Type: ApplicationFiled: April 13, 2010Publication date: October 14, 2010Applicant: DENSO CORPORATIONInventors: Osamu SHIMOMURA, Masakazu Sakata, Masatoshi Maruyama, Kazuharu Tochikawa
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Publication number: 20100122525Abstract: If it is determined that accumulation quantity of deposit on an inner wall of an exhaust passage is equal to or larger than a predetermined value, addition quantity of urea solution from a urea solution addition valve is decreased. Thereafter, exhaust gas temperature is increased rapidly when request torque of a diesel engine increases. Thus, the deposit having accumulated on the inner wall of the exhaust passage is decomposed at once and is supplied to a urea SCR as ammonia.Type: ApplicationFiled: November 16, 2009Publication date: May 20, 2010Applicant: DENSO CORPORATIONInventors: Tatsuya FUJITA, Masatoshi Maruyama
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Publication number: 20090301068Abstract: A NOx catalyst is provided in an exhaust passage of an internal combustion engine for selectively purifying NOx in exhaust gas with a reducing agent. A charging unit charges the reducing agent at an upstream of the NOx catalyst. A pressurizing unit supplies the reducing agent to the charging unit. An obtaining unit detects or estimates catalyst temperature of the NOx catalyst or temperature information, which is correlated with the catalyst temperature. A particle size control unit changes reducing-agent pressure of reducing agent, which is pressurized by the pressurizing unit and supplied to the charging unit, to control an atomized particle size of the reducing agent, which is atomized from the charging unit and charged into exhaust gas, based on the catalyst temperature or the temperature information.Type: ApplicationFiled: June 5, 2009Publication date: December 10, 2009Applicants: DENSO CORPORATION, NIPPON SOKEN, INC.Inventors: Tatsuya Fujita, Masatoshi Maruyama
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Publication number: 20090293459Abstract: An SCR catalyst is provided in an exhaust pipe of an engine and a urea solution addition valve is provided upstream of the SCR catalyst in the exhaust pipe. An ECU calculates ammonia adsorption quantity of the SCR catalyst and controls urea solution addition quantity, which is added by the urea solution addition valve, based on the ammonia adsorption quantity. The ECU obtains temperature of the SCR catalyst or temperature information correlated with the temperature through measurement or estimation. The ECU switches an execution mode of the urea solution addition control based on the catalyst temperature or the temperature information. Thus, reducing agent addition control can be performed suitably and eventually NOx purification in a NOx catalyst (i.e., SCR catalyst) can be performed suitably.Type: ApplicationFiled: June 2, 2009Publication date: December 3, 2009Applicants: DENSO CORPORATION, NIPPON SOKEN, INC.Inventors: Osamu SHIMOMURA, Masakazu Sakata, Masatoshi Maruyama
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Publication number: 20090288397Abstract: An SCR catalyst is provided in an exhaust pipe of an engine and a urea solution addition valve is provided upstream of the SCR catalyst in the exhaust pipe. An ECU controls urea solution addition quantity of the urea solution addition valve based on ammonia adsorption quantity to the SCR catalyst. The ECU calculates the ammonia adsorption quantity in the SCR catalyst based on time-series data of an ammonia balance between ammonia supply to the SCR catalyst accompanying the urea solution addition of the urea solution addition valve and ammonia consumption in the SCR catalyst. The ECU calculates NOx quantity introduced into the SCR catalyst or a parameter correlated with the NOx quantity and performs initialization of the ammonia adsorption quantity at timing decided based on a result of the calculation.Type: ApplicationFiled: May 22, 2009Publication date: November 26, 2009Applicants: DENSO CORPORATION, NIPPON SOKEN, INC.Inventors: Osamu Shimomura, Masatoshi Maruyama, Masakazu Sakata
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Publication number: 20090288396Abstract: An exhaust emission control device is used for an engine and is applied to an exhaust gas purifying system. The system has an NOx catalyst disposed in an exhaust passage of the engine to promote selective purification of NOx in exhaust gas performed by ammonia, which is a reducing agent for reducing NOx, and a reducing agent adding device for adding the reducing agent to an upstream side of the catalyst in a flow direction of exhaust gas.Type: ApplicationFiled: May 14, 2009Publication date: November 26, 2009Applicants: DENSO CORPORATION, NIPPON SOKEN, INC.Inventors: Masakazu Sakata, Masatoshi Maruyama, Osamu Shimomura
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Publication number: 20090120073Abstract: An exhaust pipe is provided with an oxidation catalyst, a SCR catalyst (ammonia selective reduction catalyst), and an ammonia slip catalyst. In the exhaust pipe, the urea water adding valve is provided between the oxidation catalyst and the SCR catalyst. A NOx sensor which detects the NOx quantity in an exhaust gas is provided downstream of the SCR catalyst. An ECU controls the urea water adding valve to add the urea water to the exhaust gas. While the urea water is added to the exhaust gas, the ECU successively obtains a NOx sensor output, and computes an adding quantity command value in which the NOx sensor output becomes minimum.Type: ApplicationFiled: November 5, 2008Publication date: May 14, 2009Applicants: DENSO CORPORATION, NIPPON SOKEN, INC.Inventors: Tatsuya Fujita, Masatoshi Maruyama