Patents by Inventor Yosuke Nakagawa
Yosuke Nakagawa 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: 20150206729Abstract: An object is to mix multiple liquids sufficiently and then nebulize the mixed liquids while maintaining the nebulizing efficiency. A nebulizer includes a first inner tube disposed inside an outer tube and having therein a first sample passage through which a first liquid sample flows, a second inner tube disposed inside the outer tube in parallel with the first inner tube and having therein a second sample passage through which a second liquid sample flows, a membranous member disposed with a gap between the membranous member and sample outlets formed at respective ends of the inner tubes. The gap forms mixing space in which a gas passing through a gas passage converts the first and second liquid samples flowing out of the sample outlets into droplets and mixes the droplets and the membranous member has multiple holes through which the mixed liquid samples pass along with the gas.Type: ApplicationFiled: January 15, 2015Publication date: July 23, 2015Applicants: S.T. JAPAN INC., NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Kazumi INAGAKI, Shin-ichiro FUJII, Shin-ichi MIYASHITA, Koichi CHIBA, Takao NAKAGAWA, Masaaki ABE, Nobuyoshi KITAGAWA, Yosuke NAKAGAWA
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Patent number: 9084959Abstract: A CO2 recovering apparatus according to this embodiment includes a cooling tower; a CO2 absorber, a regenerator; an absorbing solution level meter for measuring the amount of liquid at a tower bottom of the CO2 absorber; and a level controller for performing automatic control or manual control for one or both of a supply amount of makeup water and a condensation amount of water contained in an exhaust gas based on the liquid amount of at the bottom of the CO2 absorber detected by the absorbing solution level meter.Type: GrantFiled: August 25, 2011Date of Patent: July 21, 2015Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventor: Yosuke Nakagawa
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Publication number: 20150139776Abstract: Provided is a compressor control device configured to control a flow rate of a compressor having a plurality of impellers connected to an outlet port-side flow path in parallel and a flow rate regulation unit configured to regulate a flow rate of each of the impellers, the compressor control device including a pressure detection unit configured to detect a pressure of the outlet port-side flow path, a flow rate detection unit configured to detect the flow rate of each of the impellers, and a control unit configured to output a flow rate regulation command of each of the impellers to the flow rate regulation unit and control the flow rate regulation unit based on the detection result of the pressure detection unit.Type: ApplicationFiled: September 12, 2013Publication date: May 21, 2015Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATIONInventors: Kazuhiro Takeda, Yosuke Nakagawa
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Publication number: 20140373720Abstract: A target treatment volume for exhaust gas to be treated is specified based on the product of an actual flow rate of exhaust gas discharged toward a CO2 recovery device, and an exhaust gas treatment rate RG1, and a target recovery volume for CO2 to be recovered by the recovery device is specified based on the product of an actual volume of CO2 contained in the exhaust gas discharged from the generation source of the exhaust gas, the exhaust gas treatment rate RG1, and a CO2 recovery rate RCO2.Type: ApplicationFiled: October 30, 2012Publication date: December 25, 2014Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Yosuke Nakagawa, Nachiko Ishibashi, Hiromitsu Nagayasu
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Publication number: 20140363269Abstract: A compressor control device includes an inlet guide vane opening degree control unit configured to control an opening degree of an inlet guide vane. The inlet guide vane opening degree control unit includes an inlet guide vane opening degree command value calculation unit configured to calculate an inlet guide vane opening degree command value based on an outlet pressure detection value and a plurality of inlet guide vane opening degree correction units each configured to correct the inlet guide vane opening degree command value based on the post-merger pressure detection value and a corresponding inlet flow rate detection value for each of a plurality of upstream-most compressor bodies.Type: ApplicationFiled: February 20, 2013Publication date: December 11, 2014Inventors: Kazuhiro Takeda, Yosuke Nakagawa, Hiroyuki Miyata, Naoki Mori
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Publication number: 20140353495Abstract: A nebulizer characterized in being provided with: an inner tube, which is disposed coaxially with an outer tube in which a nebulizing outlet is formed and which, together with the outer tube, forms a gas channel therebetween; a sample channel, which is formed inside the inner tube and through which a liquid sample to be nebulized flows; and a reticular membrane disposed with a gap from the sample outlet that is formed at one end of the inner tube and in which multiple holes, through which liquid sample drops flowing out from the sample outlet pass along with a gas, are formed. Using the nebulizer, the particle size of the nebulized liquid droplets can be made uniformly fine over a broad range of sample liquid flow volumes while retention of sample liquid in the nebulizer is reduced.Type: ApplicationFiled: October 4, 2012Publication date: December 4, 2014Inventors: Kazumi Inagaki, Shin-Ichiro Fujii, Akiko Takatsu, Koichi Chiba, Takao Nakagawa, Masaaki Abe, Nobuyoshi Kitagawa, Yosuke Nakagawa
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Patent number: 8899076Abstract: Disclosed is a gas treatment device that can efficiently regulate the temperature of a gas without being affected by load.Type: GrantFiled: September 9, 2010Date of Patent: December 2, 2014Assignee: Mitsubishi Heavy Industries Compressor CorporationInventors: Kazuhiro Takeda, Yosuke Nakagawa, Tomoaki Takeda, Yasushi Mori
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Patent number: 8869554Abstract: Gas treatment equipment includes a compressor which compresses process gas, a first process module which is disposed downstream of the compressor and which treats the process gas, an expander which is disposed downstream of the first process module and which expands the process gas to obtain power, a second process module which is disposed downstream of the expander and which treats the process gas, and a driver which drives the compressor. A first pressure indicator is disposed at an inlet of the compressor for the process gas and measures a pressure of the process gas, and a second pressure indicator is disposed at an outlet of the second process module for the process gas and measures a pressure of the process gas. A recirculation flow path is connected to both of the outlet of the second process module for the process gas and the inlet of the compressor.Type: GrantFiled: September 9, 2010Date of Patent: October 28, 2014Assignee: Mitsubishi Heavy Industries Compressor CorporationInventors: Kazuhiro Takeda, Yosuke Nakagawa, Tomoaki Takeda, Yasushi Mori
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Patent number: 8656718Abstract: In a steam system having a turbine driven by steam supplied from a high-pressure header to a low-pressure header, when the pressure in the low-pressure header drops, a turbine bypass valve is opened and the high-pressure side steam is supplied to the low-pressure side header in a normal control. When the turbine is tripped, steam is rapidly flow into the low-pressure side header and its pressure temporally increases. the steam in the low-pressure header is discharged through a discharge valve. After that, if a steam supply from the low-pressure header to another process increases, the discharge valve is closed. After the discharge valve is fully closed, an after-trip control is performed in which the opening of the turbine bypass valve is increased at an earlier timing than the normal control for preventing the steam amount in the low-pressure header to be too small. The control stability of the steam system when the turbine is tripped can be enhanced.Type: GrantFiled: February 14, 2008Date of Patent: February 25, 2014Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Kazuko Takeshita, Susumu Kouno, Haruaki Hirayama, Naohiko Ishibashi, Yosuke Nakagawa
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Patent number: 8620483Abstract: A steam system control method applied to a steam system including: a low-pressure header storing low-pressure steam; a high-pressure header storing high-pressure header; a steam turbine connected between them; and a turbine bypass line introducing controlled amount of steam from the high-pressure header to the low-pressure header by bypassing the steam turbine. The low-pressure header has a blow-off valve for discharging excessive steam to the outside. The steam system control method includes: a normal time blow-off valve control step of PI controlling the opening of the blow-off valve; and a trip time blow-off control step of controlling the opening of the blow-off valve by changing the MV value to a predetermined trip time opening set value when the turbine is tripped.Type: GrantFiled: February 14, 2008Date of Patent: December 31, 2013Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Kazuko Takeshita, Susumu Kouno, Haruaki Hirayama, Naohiko Ishibashi, Yosuke Nakagawa
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Publication number: 20130333559Abstract: A CO2 recovering apparatus according to this embodiment includes a cooling tower; a CO2 absorber, a regenerator; an absorbing solution level meter for measuring the amount of liquid at a tower bottom of the CO2 absorber; and a level controller for performing automatic control or manual control for one or both of a supply amount of makeup water and a condensation amount of water contained in an exhaust gas based on the liquid amount of at the bottom of the CO2 absorber detected by the absorbing solution level meter.Type: ApplicationFiled: August 25, 2011Publication date: December 19, 2013Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventor: Yosuke Nakagawa
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Publication number: 20120067071Abstract: Disclosed is a gas processing apparatus which can be operated independently of the feed flow rate of a process gas.Type: ApplicationFiled: September 9, 2010Publication date: March 22, 2012Inventors: Kazuhiro Takeda, Yosuke Nakagawa, Tomoaki Takeda, Yasushi Mori
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Publication number: 20120060528Abstract: Disclosed is a gas treatment device that can efficiently regulate the temperature of a gas without being affected by load.Type: ApplicationFiled: September 9, 2010Publication date: March 15, 2012Inventors: Kazuhiro Takeda, Yosuke Nakagawa, Tomoaki Takeda, Yasushi Mori
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Publication number: 20100161136Abstract: A steam system control method applied to a steam system including: a low-pressure header storing low-pressure steam; a high-pressure header storing high-pressure header; a steam turbine connected between them; and a turbine bypass line introducing controlled amount of steam from the high-pressure header to the low-pressure header by bypassing the steam turbine. The low-pressure header has a blow-off valve for discharging excessive steam to the outside. The steam system control method includes: a normal time blow-off valve control step of PI controlling the opening of the blow-off valve; and a trip time blow-off control step of controlling the opening of the blow-off valve by changing the MV value to a predetermined trip time opening set value when the turbine is tripped.Type: ApplicationFiled: February 14, 2008Publication date: June 24, 2010Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Kazuko Takeshita, Susumu Kouno, Haruaki Hirayama, Naohiko Ishibashi, Yosuke Nakagawa
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Patent number: 7695569Abstract: The invention relates to a detergent for hard surfaces, which contains (a) a polymer compound having a cationic group, such as a cation-modified polyvinyl alcohol containing specified structural units, (b) a surfactant and (c) water.Type: GrantFiled: November 16, 2005Date of Patent: April 13, 2010Assignee: Kao CorporationInventors: Yosuke Nakagawa, Noriyuki Morii, Kazunori Tsukuda, Kenichi Shiba, Hirofumi Mizukoshi
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Publication number: 20090288414Abstract: In a steam system having a turbine driven by steam supplied from a high-pressure header to a low-pressure header, when the pressure in the low-pressure header drops, a turbine bypass valve is opened and the high-pressure side steam is supplied to the low-pressure side header in a normal control. When the turbine is tripped, steam is rapidly flow into the low-pressure side header and its pressure temporally increases. the steam in the low-pressure header is discharged through a discharge valve. After that, if a steam supply from the low-pressure header to another process increases, the discharge valve is closed. After the discharge valve is fully closed, an after-trip control is performed in which the opening of the turbine bypass valve is increased at an earlier timing than the normal control for preventing the steam amount in the low-pressure header to be too small. The control stability of the steam system when the turbine is tripped can be enhanced.Type: ApplicationFiled: February 14, 2008Publication date: November 26, 2009Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Kazuko Takeshita, Susumu Kouno, Haruaki Hirayama, Naohiko Ishibashi, Yosuke Nakagawa
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Publication number: 20080261856Abstract: The invention relates to a detergent for hard surfaces, which contains (a) a polymer compound having a cationic group, such as a cation-modified polyvinyl alcohol containing specified structural units, (b) a surfactant and (c) water.Type: ApplicationFiled: November 16, 2005Publication date: October 23, 2008Applicant: Kao CorporationInventors: Yosuke Nakagawa, Noriyuki Morii, Kazunori Tsukuda, Kenichi Shiba, Hirofumi Mizukoshi