Patents by Inventor Tomoyuki Ishikawa
Tomoyuki 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: 9309959Abstract: A power transmission device having a shift device in a case; and a pump sucking and discharges oil, including: a gear receiving power from the shift device; a gear shaft with a breather chamber having at least one end side in an axial direction being opened, and attached to the gear; a bearing supporting the gear shaft rotatably relative to the case on the breather chamber one end side; a vent pipe communicating with the breather chamber opening and outside of the case; a passage in the case with an outlet port opening to the case inside, and allowing pump leakage oil to flow from the outlet port; a member receiving flowing from the outlet port of the passage; a passage guiding the leakage oil from the receiving member to the bearing; and a portion suppressing entry of oil thrown up with rotation of the gear into the receiving member.Type: GrantFiled: August 22, 2012Date of Patent: April 12, 2016Assignee: AISIN AW CO., LTD.Inventors: Tomoyuki Ishikawa, Tatsuaki Ito
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Patent number: 8824974Abstract: The present invention provides a semiconductor integrated circuit device and a radio frequency module realizing reduction in high-order harmonic distortion or IMD. For example, a so-called antenna switch having a plurality of transistors between an antenna terminal and a plurality of signal terminals is provided with a voltage supply circuit. The voltage supply circuit is a circuit for supplying voltage from a voltage supply terminal to at least two signal terminals in the plurality of signal terminals via resistive elements. With the configuration, antenna voltage dropped due to a leakage or the like can be boosted and, for example, transistors in an off state can be set to a deep off state.Type: GrantFiled: October 22, 2010Date of Patent: September 2, 2014Assignee: Murata Manufacturing Co., Ltd.Inventors: Akishige Nakajima, Yasushi Shigeno, Takashi Ogawa, Shinnichirou Takatani, Shinya Osakabe, Tomoyuki Ishikawa
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Publication number: 20140213405Abstract: A power transmission device having a shift device in a case; and a pump sucking and discharges oil, including: a gear receiving power from the shift device; a gear shaft with a breather chamber having at least one end side in an axial direction being opened, and attached to the gear; a bearing supporting the gear shaft rotatably relative to the case on the breather chamber one end side; a vent pipe communicating with the breather chamber opening and outside of the case; a passage in the case with an outlet port opening to the case inside, and allowing pump leakage oil to flow from the outlet port; a member receiving flowing from the outlet port of the passage; a passage guiding the leakage oil from the receiving member to the bearing; and a portion suppressing entry of oil thrown up with rotation of the gear into the receiving member.Type: ApplicationFiled: August 22, 2012Publication date: July 31, 2014Applicant: AISIN AW CO., LTD.Inventors: Tomoyuki Ishikawa, Tatsuaki Ito
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Patent number: 8500998Abstract: A hydraulic control device includes a valve body having oil passages, a solenoid valve incorporated in the valve body, an oil pan that is disposed below the valve body and that accumulates hydraulic oil, and a strainer which, as well as being disposed between the valve body and the oil pan, has a filtering medium which filters the hydraulic oil suctioned from the oil pan. The strainer is fixed to the oil pan by a magnetic force of at least one magnet.Type: GrantFiled: March 8, 2011Date of Patent: August 6, 2013Assignee: Aisin AW Co., Ltd.Inventors: Ko Tsunematsu, Tomoyuki Ishikawa, Atsushi Yamanaka
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Patent number: 8366577Abstract: A vehicle power transmission device including an accumulation portion which accumulates lubricating oil, a pressure pump driven to pump the lubricating oil accumulated in the accumulation portion to the transmission as hydraulic oil, a scooping gear which scoops up the lubricating oil accumulated in the accumulation portion while rotating, a reception and guide portion receiving the lubricating oil scooped up by the scooping gear and guiding it to a predetermined lubrication target, and a leaked hydraulic oil guide portion guiding leaked hydraulic oil, leaked when the hydraulic oil is pumped from the pressure pump, to the reception and guide portion.Type: GrantFiled: March 8, 2011Date of Patent: February 5, 2013Assignee: Aisin AW Co., Ltd.Inventors: Yoshinori Shibayama, Ko Tsunematsu, Tomoyuki Ishikawa, Tatsuaki Ito
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Patent number: 8299129Abstract: The present invention provides a carrier capable of highly efficiently introducing a compound into cells with low cytotoxicity, which contains peptide lipids represented by the following formula, and a method for introducing a compound into cells using the carrier: wherein R1 is an amino acid or peptide having 1-10 amino acid residues, R2 is a side chain of any amino acid, provided that R2 has a carboxyl group, the carboxyl group may be an ester with a hydrocarbon group having 1-30 carbon atoms, R3 is a hydrocarbon group having 1-30 carbon atoms.Type: GrantFiled: March 1, 2006Date of Patent: October 30, 2012Assignees: Fukuoka Prefectural Government, Kyoto University, Dojindo LaboratoriesInventors: Kenichi Kusumoto, Itaru Hamachi, Kazumi Sasamoto, Tetsuyuki Akao, Munetaka Ishiyama, Takahiro Nagata, Chizu Ikeda, Takeshi Ido, Satoko Yamashita, Rieko Kuroda, Tomoyuki Ishikawa
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Patent number: 8225118Abstract: A server system comprises a plurality of servers, and a management unit. Each of the servers has virtual machines which can move among the servers. The management unit moves all the virtual machines on one server to another server(s) based on information showing an electric power value so as to reduce the number of servers in operation as much as possible. The management unit stops supplying the electric power to the server on which no virtual machine has run as a result of the movement of the virtual machines.Type: GrantFiled: January 15, 2009Date of Patent: July 17, 2012Assignee: NEC CorporationInventor: Tomoyuki Ishikawa
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Patent number: 8115234Abstract: There is provided a technique for reducing the occurrence of higher harmonics which occur from a field effect transistor, particularly a field effect transistor configuring a switching element of an antenna switch. In a transistor having a meander structure, the gate width of a partial transistor closest to a gate input side is increased. More specifically, a comb-like electrode is made longer than the other comb-like electrodes. In other words, a finger length is made greater than any other finger length. In particular, the comb-like electrode has the greatest length in all the comb-like electrodes.Type: GrantFiled: September 23, 2009Date of Patent: February 14, 2012Assignee: Renesas Electronics CorporationInventors: Akishige Nakajima, Yasushi Shigeno, Hitoshi Akamine, Tsutomu Kobori, Izumi Arai, Kazuto Tajima, Tomoyuki Ishikawa, Jyun Funaki
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Publication number: 20110240149Abstract: A hydraulic control device includes a valve body having oil passages, a solenoid valve incorporated in the valve body, an oil pan that is disposed below the valve body and that accumulates hydraulic oil, and a strainer which, as well as being disposed between the valve body and the oil pan, has a filtering medium which filters the hydraulic oil suctioned from the oil pan. The strainer is fixed to the oil pan by a magnetic force of at least one magnet.Type: ApplicationFiled: March 8, 2011Publication date: October 6, 2011Applicant: AISIN AW CO., LTD.Inventors: Ko TSUNEMATSU, Tomoyuki ISHIKAWA, Atsushi YAMANAKA
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Publication number: 20110245009Abstract: A vehicle power transmission device including an accumulation portion which accumulates lubricating oil, a pressure pump driven to pump the lubricating oil accumulated in the accumulation portion to the transmission as hydraulic oil, a scooping gear which scoops up the lubricating oil accumulated in the accumulation portion while rotating, a reception and guide portion receiving the lubricating oil scooped up by the scooping gear and guiding it to a predetermined lubrication target, and a leaked hydraulic oil guide portion guiding leaked hydraulic oil, leaked when the hydraulic oil is pumped from the pressure pump, to the reception and guide portion.Type: ApplicationFiled: March 8, 2011Publication date: October 6, 2011Applicant: AISIN AW CO., LTD.Inventors: Yoshinori SHIBAYAMA, Ko TSUNEMATSU, Tomoyuki ISHIKAWA, Tatsuaki ITO
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Patent number: 7986927Abstract: Upon application of an on-state voltage to a control terminal, an antenna switch provided between an antenna terminal and a transmission terminal is turned on, and a transmission signal of a PCS/DCS system passes from the transmission terminal through the antenna terminal. At this time, a booster circuit, to which a part of the transmission signal is supplied, generates at an output terminal a boost voltage higher than a control voltage output from a controller due to the rectification of diodes, and applies the same to the gate of a transistor circuit of the antenna switch. Since in the booster circuit a resistor is coupled to the output terminal, the passage through resistors of an input transmission power in an RF signal path is only the passage through one resistor, thus reducing the attenuation of the transmission signal and providing an excellent insertion loss characteristic.Type: GrantFiled: December 19, 2007Date of Patent: July 26, 2011Assignee: Renesas Electronics CorporationInventors: Akishige Nakajima, Yasushi Shigeno, Tomoyuki Ishikawa
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Publication number: 20110034137Abstract: The present invention provides a semiconductor integrated circuit device and a radio frequency module realizing reduction in high-order harmonic distortion or IMD. For example, a so-called antenna switch having a plurality of transistors between an antenna terminal and a plurality of signal terminals is provided with a voltage supply circuit. The voltage supply circuit is a circuit for supplying voltage from a voltage supply terminal to at least two signal terminals in the plurality of signal terminals via resistive elements. With the configuration, antenna voltage dropped due to a leakage or the like can be boosted and, for example, transistors in an off state can be set to a deep off state.Type: ApplicationFiled: October 22, 2010Publication date: February 10, 2011Applicant: RENESAS ELECTRONICS CORPORATIONInventors: Akishige NAKAJIMA, Yasushi SHIGENO, Takashi OGAWA, Shinnichirou TAKATANI, Shinya OSAKABE, Tomoyuki ISHIKAWA
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Publication number: 20100096667Abstract: There is provided a technique for reducing the occurrence of higher harmonics which occur from a field effect transistor, particularly a field effect transistor configuring a switching element of an antenna switch. In a transistor having a meander structure, the gate width of a partial transistor closest to a gate input side is increased. More specifically, a comb-like electrode is made longer than the other comb-like electrodes. In other words, a finger length is made greater than any other finger length. In particular, the comb-like electrode has the greatest length in all the comb-like electrodes.Type: ApplicationFiled: September 23, 2009Publication date: April 22, 2010Applicant: RENESAS TECHNOLOGY CORP.Inventors: Akishige NAKAJIMA, Yasushi SHIGENO, Hitoshi AKAMINE, Tsutomu KOBORI, Izumi ARAI, Kazuto TAJIMA, Tomoyuki ISHIKAWA, Jyun FUNAKI
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Patent number: 7650134Abstract: In a SPDT switch, a resistor for leak path is connected between a terminal for antenna and a reference potential. The resistor for leak path allows charge capacitances accumulated in electrostatic capacitor elements provided as DC cut capacitors connected to transmission signal terminals and reception signal terminals to be discharged and allows rapid lowering of a potential at the terminal for antenna. In the SPDT switch, a switching characteristic is improved and a delay in the rising edge of a low-power slot which comes after a high-power slot is reduced.Type: GrantFiled: August 30, 2006Date of Patent: January 19, 2010Assignee: Renesas Technology Corp.Inventors: Akishige Nakajima, Yasushi Shigeno, Takashi Ogawa, Shinya Osakabe, Tomoyuki Ishikawa
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Publication number: 20090187775Abstract: A server system comprises a plurality of servers, and a management unit. Each of the servers has virtual machines which can move among the servers. The management unit moves all the virtual machines on one server to another server(s) based on information showing an electric power value so as to reduce the number of servers in operation as much as possible. The management unit stops supplying the electric power to the server on which no virtual machine has run as a result of the movement of the virtual machines.Type: ApplicationFiled: January 15, 2009Publication date: July 23, 2009Inventor: Tomoyuki Ishikawa
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Publication number: 20090170960Abstract: The present invention provides a carrier capable of highly efficiently introducing a compound into cells with low cytotoxicity, which contains peptide lipids represented by the following formula, and a method for introducing a compound into cells using the carrier: wherein R1 is an amino acid or peptide having 1-10 amino acid residues, R2 is a side chain of any amino acid, provided that R2 has a carboxyl group, the carboxyl group may be an ester with a hydrocarbon group having 1-30 carbon atoms, R3 is a hydrocarbon group having 1-30 carbon atoms.Type: ApplicationFiled: March 1, 2006Publication date: July 2, 2009Applicants: FUKUOKA PREFECTURAL GOVERNMENT, KYOTO UNIVERSITY, DOJINDO LABORATORIESInventors: Kenichi Kusumoto, Itaru Hamachi, Kazumi Sasamoto, Tetsuyuki Akao, Munetaka Ishiyama, Takahiro Nagata, Chizu Ikeda, Takeshi Ido, Satoko Yamashita, Rieko Kuroda, Tomoyuki Ishikawa
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Publication number: 20080317154Abstract: The present invention provides a semiconductor integrated circuit device and a radio frequency module realizing reduction in high-order harmonic distortion or IMD. For example, a so-called antenna switch having a plurality of transistors between an antenna terminal and a plurality of signal terminals is provided with a voltage supply circuit. The voltage supply circuit is a circuit for supplying voltage from a voltage supply terminal to at least two signal terminals in the plurality of signal terminals via resistive elements. With the configuration, antenna voltage dropped due to a leakage or the like can be boosted and, for example, transistors in an off state can be set to a deep off state.Type: ApplicationFiled: June 19, 2007Publication date: December 25, 2008Inventors: Akishige Nakajima, Yasushi Shigeno, Takashi Ogawa, Shinnichirou Takatani, Shinya Osakabe, Tomoyuki Ishikawa
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Publication number: 20080197923Abstract: Upon application of an on-state voltage to a control terminal, an antenna switch provided between an antenna terminal and a transmission terminal is turned on, and a transmission signal of a PCS/DCS system passes from the transmission terminal through the antenna terminal. At this time, a booster circuit, to which a part of the transmission signal is supplied, generates at an output terminal a boost voltage higher than a control voltage output from a controller due to the rectification of diodes, and applies the same to the gate of a transistor circuit of the antenna switch. Since in the booster circuit a resistor is coupled to the output terminal, the passage through resistors of an input transmission power in an RF signal path is only the passage through one resistor, thus reducing the attenuation of the transmission signal and providing an excellent insertion loss characteristic.Type: ApplicationFiled: December 19, 2007Publication date: August 21, 2008Inventors: Akishige NAKAJIMA, Yasushi Shigeno, Tomoyuki Ishikawa
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Patent number: 7409273Abstract: A tire trouble detection device detects occurrence of a trouble in a tire. The tire trouble detection device comprises a detection unit which detects a change of state of a layered composition portion arranged in layers inside an outer sheath forming an outside surface of the tire, the layered composition portion forming a frame of the tire. A determination unit receives a result of the detection from the detection unit and determines occurrence of a trouble of the layered composition portion based on the received result of the detection.Type: GrantFiled: June 7, 2004Date of Patent: August 5, 2008Assignee: Toyota Jidosha Kabushiki KaishaInventors: Tomoyuki Ishikawa, Hideki Murakami, Yuji Taki
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Publication number: 20070049352Abstract: In a SPDT switch, a resistor for leak path is connected between a terminal for antenna and a reference potential. The resistor for leak path allows charge capacitances accumulated in electrostatic capacitor elements provided as DC cut capacitors connected to transmission signal terminals and reception signal terminals to be discharged and allows rapid lowering of a potential at the terminal for antenna. In the SPDT switch, a switching characteristic is improved and a delay in the rising edge of a low-power slot which comes after a high-power slot is reduced.Type: ApplicationFiled: August 30, 2006Publication date: March 1, 2007Inventors: Akishige Nakajima, Yasushi Shigeno, Takashi Ogawa, Shinya Osakabe, Tomoyuki Ishikawa