Patents by Inventor Yuji Ishikawa
Yuji Ishikawa 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: 9444112Abstract: In a fuel cell monitoring device, a gas-diffusion resistance calculation section calculates a gas-diffusion resistance Rtotal indicating a difficulty of diffusing reaction gas to a catalyst layer in a fuel cell based on a gas reaction resistance Rct calculated by a resistance calculation section. A second diffusion resistance calculation section calculates a second diffusion resistance Rdry varying depending on a dried-up in the fuel cell based on a proton transfer resistance Rmem calculated by the resistance calculation section. A first diffusion resistance calculation section calculates a first diffusion resistance Rwet varying depending on a flooding in the fuel cell by subtracting the second diffusion resistance Rdry from the gas-diffusion resistance Rtotal. A water content calculation section calculates a water content of the fuel cell based on the first diffusion resistance. A recovery control section adjusts the water content in the fuel cell based on the calculated water content.Type: GrantFiled: April 1, 2014Date of Patent: September 13, 2016Assignees: DENSO CORPORATION, NIPPON SOKEN, INC., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yuji Ishikawa, Ikuyasu Kato, Takashi Yamada, Yuichi Sakajo, Keigo Suematsu
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Patent number: 9299997Abstract: To improve an output of a fuel cell and power generation efficiency by enhancing drainage of the fuel cell upon actuation below freezing temperature. In a fuel cell system that generates power by supplying fuel gas and oxidant gas, the output of the fuel cell is measured when a temperature of the fuel cell after the actuation below freezing temperature exceeds 0 degree, and if a value of the output is equal to or less than a reference output value, pressure pulsation is applied to a cathode electrode to drain water built up in the fuel cell.Type: GrantFiled: June 17, 2011Date of Patent: March 29, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yuji Ishikawa
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Publication number: 20160000898Abstract: Disclosed is a microneedle coating composition comprising a Japanese encephalitis vaccine antigen, a basic amino acid, and an acid, wherein the mole number of the acid for one mole of the basic amino acid is larger than 1/(N+1) and less than 2, where N represents the valence of the acid.Type: ApplicationFiled: February 12, 2014Publication date: January 7, 2016Inventors: Kazuya MACHIDA, Seiji TOKUMOTO, Kazuyoshi KAMINAKA, Yuji ISHIKAWA
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Publication number: 20150245790Abstract: The present invention provides a latent fingerprint detection, method that is to handle and is capable of clearly detecting a latent fingerprint, and a heating evaporation device for detecting a latent fingerprint and a latent fingerprint detection apparatus which are capable of detecting a clear latent fingerprint by a one-time operation by heating a chemical agent at high temperatures in a short time, as well as a composition for detecting a latent fingerprint. This latent fingerprint detection method includes a heating step of heating a chemical agent to be gasified by heating so as to attach to a latent fingerprint on a specimen, and an exposure step of exposing the specimen having the latent fingerprint attached thereto to the atmosphere of the gasified chemical agent. The chemical agent is a mixture of a 2-cyanoacrylic acid ester polymer and a dye.Type: ApplicationFiled: October 11, 2013Publication date: September 3, 2015Applicants: TOAGOSEI, CO., LTD., EARTH CHEMICAL CO., LTD.Inventors: Osamu Shimoda, Yushi Sawada, Masao Fukushima, Makoto Miyamoto, Yushi Ando, Yuji Ishikawa
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Publication number: 20150084638Abstract: A current measurement device includes a measurement part that is constituted by including a resistance part having a predetermined electric resistance value and a pair of current collector parts for extracting a potential difference generated by a current that flows the resistance part; a potential difference detector that is connected to the pair of current collector parts and detects a potential difference generated in the resistance part; and a current detector that detects the current that flows through the inside of a fuel cell. The measurement part is disposed to be integrated with one separator of the pair of separators and the pair of current collectors is disposed so as to overlap with the resistance part when seen from a direction orthogonal to the stacking direction of the cells.Type: ApplicationFiled: September 23, 2014Publication date: March 26, 2015Inventors: Yuji Ishikawa, Ikuyasu Kato, Takashi Yamamoto, Takashi Yamada, Keigo Suematsu
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Publication number: 20140295302Abstract: In a fuel cell monitoring device, a gas-diffusion resistance calculation section calculates a gas-diffusion resistance Rtotal indicating a difficulty of diffusing reaction gas to a catalyst layer in a fuel cell based on a gas reaction resistance Rct calculated by a resistance calculation section. A second diffusion resistance calculation section calculates a second diffusion resistance Rdry varying depending on a dried-up in the fuel cell based on a proton transfer resistance Rmem calculated by the resistance calculation section. A first diffusion resistance calculation section calculates a first diffusion resistance Rwet varying depending on a flooding in the fuel cell by subtracting the second diffusion resistance Rdry from the gas-diffusion resistance Rtotal. A water content calculation section calculates a water content of the fuel cell based on the first diffusion resistance. A recovery control section adjusts the water content in the fuel cell based on the calculated water content.Type: ApplicationFiled: April 1, 2014Publication date: October 2, 2014Applicants: Denso Corporation, Toyota Jidosha Kabushiki Kaisha, Nippon Soken, Inc.Inventors: Yuji Ishikawa, Ikuyasu Kato, Takashi Yamada, Yuuichi Sakajoh, Keigo Suematsu
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Publication number: 20140134508Abstract: To improve an output of a fuel cell and power generation efficiency by enhancing drainage of the fuel cell upon actuation below freezing temperature. In a fuel cell system that generates power by supplying fuel gas and oxidant gas, the output of the fuel cell is measured when a temperature of the fuel cell after the actuation below freezing temperature exceeds 0 degree, and if a value of the output is equal to or less than a reference output value, pressure pulsation is applied to a cathode electrode to drain water built up in the fuel cell.Type: ApplicationFiled: June 17, 2011Publication date: May 15, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yuji Ishikawa
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Patent number: 8695024Abstract: A magazine detachably installed in a main body of a disc changer is divided into sections by partitions for storing a large number of optical discs. The magazine is provided with a belt set around rollers, which carries the optical disc in contact with the belt. In the disc changer, the belt is rotated by a gear of the roller, which is engaged with an external drive gear for taking the optical disc through rotating movement. Among the optical discs which have been taken, a target optical disc opposite the slit of the disc control plate passes through the slit, and the other optical discs stop while abutting against the disc control plate. The optical disc which has passed through the slit is inserted into disc carriage rollers, and further carried to the drive for recording/reproducing.Type: GrantFiled: February 24, 2011Date of Patent: April 8, 2014Assignee: Hitachi Consumer Electronics Co., Ltd.Inventors: Takashi Yoshida, Osamu Kawamae, Yuji Ishikawa
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Patent number: 8688918Abstract: According to one embodiment, a program converting device includes an access attribute determining unit, a non-sharing target classifying unit, and a converting unit. The access attribute determining unit calculates exclusive accesses from memory accesses by threads forming a source program and determines a memory access using a cache memory among the calculated exclusive accesses. The non-sharing target classifying unit determines an access data item that does not share a cache line with another access data item among the access data items that are accessed using the cache memories. The converting unit inserts a process that does not share the cache line into the source program based on the determination result of the non-sharing target classifying unit.Type: GrantFiled: March 16, 2012Date of Patent: April 1, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Yuji Ishikawa, Akira Kuroda, Hidenori Matsuzaki, Nobuaki Tojo
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Publication number: 20130117512Abstract: According to one embodiment, a program converting device includes an access attribute determining unit, a non-sharing target classifying unit, and a converting unit. The access attribute determining unit calculates exclusive accesses from memory accesses by threads forming a source program and determines a memory access using a cache memory among the calculated exclusive accesses. The non-sharing target classifying unit determines an access data item that does not share a cache line with another access data item among the access data items that are accessed using the cache memories. The converting unit inserts a process that does not share the cache line into the source program based on the determination result of the non-sharing target classifying unit.Type: ApplicationFiled: March 16, 2012Publication date: May 9, 2013Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Yuji Ishikawa, Akira Kuroda, Hidenori Matsuzaki, Nobuaki Tojo
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Publication number: 20130052551Abstract: A cell of a fuel cell includes an MEA, an anode-side gas diffusion layer, a cathode-side gas diffusion layer, an anode-side gas flow passage, a cathode-side gas flow passage, and separators. The anode-side gas flow passage and the cathode-side gas flow passage are opposed flow passages and are both set such that the contact area or the contact ratio of a metal porous body such as an expanded metal body which forms the gas flow channels with respect to the gas diffusion layer is decreased from the upstream toward the downstream of the gas flow passages. With the difference in the contact area or the contact ratio, the generated water is moved between the anode-side gas flow passage and the cathode-side gas flow passage.Type: ApplicationFiled: February 21, 2011Publication date: February 28, 2013Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yuji Ishikawa
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Patent number: 8266596Abstract: Every time an assignment statement is executed during performing a simulation according to a second variable memory system, it is determined whether a value interpreted to have the same meaning is assigned to the assignment statement in the simulation according to a first variable memory system and in the simulation according to the second variable memory system. When the value interpreted to have the same meaning is not assigned, the value assigned according to the second variable memory system is overwritten by an expected value, and a report indicating that the assignment statement is a part dependent on a variable memory system is output.Type: GrantFiled: February 26, 2010Date of Patent: September 11, 2012Assignee: Kabushiki Kaisha ToshibaInventors: Yuji Ishikawa, Yutaka Ota, Yu Nakanishi
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Patent number: 8214679Abstract: A multi-core processor system includes: a plurality of processor cores; a power supply unit that stops supplying or supplies power to each of the processor cores individually; and a thread queue that stores threads that the multi-core processor system causes the processor cores to execute. Each of the processor cores includes: a power-supply stopping unit that causes the power supply unit to stop power supply to an own processor core when a number of threads stored in the thread queue is equal to or smaller than a first threshold; and a power-supply resuming unit that causes the power supply unit to resume power supply to the other stopped processor cores when the number of threads stored in the thread queue exceeds a second value equal to or lager than the first threshold.Type: GrantFiled: November 2, 2009Date of Patent: July 3, 2012Assignee: Kabushiki Kaisha ToshibaInventors: Yuji Ishikawa, Toshiki Kizu, Ryuichiro Ohyama
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Publication number: 20120079510Abstract: A magazine detachably installed in a main body of a disc changer is divided into sections by partitions for storing a large number of optical discs. The magazine is provided with a belt set around rollers, which carries the optical disc in contact with the belt. In the disc changer, the belt is rotated by a gear of the roller, which is engaged with an external drive gear for taking the optical disc through rotating movement. Among the optical discs which have been taken, a target optical disc opposite the slit of the disc control plate passes through the slit, and the other optical discs stop while abutting against the disc control plate. The optical disc which has passed through the slit is inserted into disc carriage rollers, and further carried to the drive for recording/reproducing.Type: ApplicationFiled: February 24, 2011Publication date: March 29, 2012Inventors: Takashi YOSHIDA, Osamu Kawamae, Yuji Ishikawa
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Publication number: 20110055818Abstract: Every time an assignment statement is executed during performing a simulation according to a second variable memory system, it is determined whether a value interpreted to have the same meaning is assigned to the assignment statement in the simulation according to a first variable memory system and in the simulation according to the second variable memory system. When the value interpreted to have the same meaning is not assigned, the value assigned according to the second variable memory system is overwritten by an expected value, and a report indicating that the assignment statement is a part dependent on a variable memory system is output.Type: ApplicationFiled: February 26, 2010Publication date: March 3, 2011Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Yuji ISHIKAWA, Yutaka Ota, Yu Nakanishi
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Publication number: 20100299541Abstract: A multi-core processor system includes: a plurality of processor cores; a power supply unit that stops supplying or supplies power to each of the processor cores individually; and a thread queue that stores threads that the multi-core processor system causes the processor cores to execute. Each of the processor cores includes: a power-supply stopping unit that causes the power supply unit to stop power supply to an own processor core when a number of threads stored in the thread queue is equal to or smaller than a first threshold; and a power-supply resuming unit that causes the power supply unit to resume power supply to the other stopped processor cores when the number of threads stored in the thread queue exceeds a second value equal to or lager than the first threshold.Type: ApplicationFiled: November 2, 2009Publication date: November 25, 2010Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Yuji Ishikawa, Toshiki Kizu, Ryuichiro Ohyama
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Patent number: 7834183Abstract: A process for producing an N-(hetero)aryl-substituted nitrogen-containing heteroaryl compound, the process comprising: reacting a heteroaryl compound having an NH group as a ring-constituting component with a (hetero)aryl compound having a leaving group in the presence of a heterogeneous-system platinum group metal catalyst, a ligand and a base.Type: GrantFiled: December 8, 2006Date of Patent: November 16, 2010Assignee: Fujifilm Finechemicals Co., LtdInventors: Yuji Ishikawa, Susumu Harada, Ken Umihara
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Publication number: 20090076120Abstract: Two crystal forms of (R)-3-[2-(2-amino-5-trifluoromethoxybenzamido)acetamido]-1-(6-methylindol-3-ylmethyl)pyrrolidine which exhibit specific X-ray powder diffraction patterns or infrared absorption spectra, amorphous form thereof, a pharmaceutical composition containing the crystal or amorphous form as an active ingredient, as well as methods for preparing them are provided.Type: ApplicationFiled: April 6, 2006Publication date: March 19, 2009Applicant: TEIJIN PHARMA LIMITEDInventors: Takumi Takeyasu, Yoshinori Sato, Asahi Kawana, Yuji Takahashi, Yuji Ishikawa, Kaoru Suda
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Publication number: 20080064878Abstract: A process for producing a 1-pyridin-4-yl-indole represented by formula (III) as defined in the specification, which comprises reacting a pyridine compound represented by formula (I) as defined in the specification with an indole compound represented by formula (II) as defined in the specification in the presence of a base at 50 to 200° C.Type: ApplicationFiled: September 7, 2007Publication date: March 13, 2008Applicant: FUJIFILM FINECHEMICALS CO., LTDInventors: Hidenori AOKI, Shinichiro TSUJIYAMA, Yuji ISHIKAWA, Susumu HARADA
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Publication number: 20070135633Abstract: A process for producing an N-(hetero)aryl-substituted nitrogen-containing heteroaryl compound, the process comprising: reacting a heteroaryl compound having an NH group as a ring-constituting component with a (hetero)aryl compound having a leaving group in the presence of a heterogeneous-system platinum group metal catalyst, a ligand and a base.Type: ApplicationFiled: December 8, 2006Publication date: June 14, 2007Applicant: FUJIFILM FINECHEMICALS CO., LTDInventors: Yuji Ishikawa, Susumu Harada, Ken Umihara