Patents by Inventor Takayuki Iwasaki
Takayuki Iwasaki 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: 20150228727Abstract: The present invention provides a diamond semiconductor device which includes: a diamond substrate; a diamond step section disposed over substrate surface of the diamond substrate having a {001} crystal face to rise substantially perpendicularly to substrate surface; an n-type phosphorus-doped diamond region; and a diamond insulation region. In the diamond step section, a first step section having a {110} crystal face over a side surface is integrated with a second step section having a {100} crystal face over a side surface. The phosphorus-doped diamond region is formed by crystal growth started from base angle of the step shape of the first step section over the side surface of the first step section and substrate surface of the diamond substrate as growth base planes. The diamond insulation region is formed by crystal growth over the side surface of the second step section and substrate surface of the diamond substrate as growth base planes.Type: ApplicationFiled: August 8, 2013Publication date: August 13, 2015Inventors: Hiromitsu Kato, Toshiharu Makino, Masahiko Ogura, Daisuke Takeuchi, Satoshi Yamasaki, Mutsuko Hatano, Takayuki Iwasaki
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Patent number: 9045130Abstract: A vehicular engine automatic stop control apparatus has a coast stop controller that performs a coast stop control of stopping an engine in response to a situation where driver's brake pedal operation is above a predetermined threshold value while a vehicle is traveling, a road surface gradient sensor that senses a road surface gradient, and a coast stop control cancellation unit that cancels the coast stop control in response to a situation where a first sensed value of the road surface gradient is above a predetermined cancellation threshold value in absolute value. The first sensed value of the road surface gradient is obtained at a first time instant when the vehicle becomes stationary in a situation where the engine has been stopped by the coast stop controller.Type: GrantFiled: November 26, 2012Date of Patent: June 2, 2015Assignee: Nissan Motor Co., Ltd.Inventors: Ryo Sano, Takayuki Iwasaki
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Publication number: 20150011360Abstract: A vehicular engine automatic stop control apparatus has a coast stop controller that performs a coast stop control of stopping an engine in response to a situation where driver's brake pedal operation is above a predetermined threshold value while a vehicle is traveling, a road surface gradient sensor that senses a road surface gradient, and a coast stop control cancellation unit that cancels the coast stop control in response to a situation where a first sensed value of the road surface gradient is above a predetermined cancellation threshold value in absolute value. The first sensed value of the road surface gradient is obtained at a first time instant when the vehicle becomes stationary in a situation where the engine has been stopped by the coast stop controller.Type: ApplicationFiled: November 26, 2012Publication date: January 8, 2015Applicant: NISSAN MOTOR CO., LTD.Inventors: Ryo Sano, Takayuki Iwasaki
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Publication number: 20140372013Abstract: An engine starting device is provided with a battery, a starter motor, an inrush current limit circuit and a control unit. The inrush current limit circuit has a resistor and a bypass relay connected in parallel. The inrush current limit circuit is interposed between the battery and the starter motor. The bypass relay has a normally open contact that is configured to be closed at a time of engine startup. The control unit is programmed to include a fault identification unit that identifies a location of fault occurrence in the inrush current limit circuit based on a minimum voltage of the battery existing while the starter motor is determined to be in operation and an amount of decrease in voltage of the battery existing while the normally open contact is determined to be actuated in a closing direction.Type: ApplicationFiled: February 5, 2013Publication date: December 18, 2014Applicant: Nissan Motor Company, Ltd.Inventors: Hiromoto Shimizu, Takayuki Iwasaki, Ryo Sano, Motoyuki Hattori, Yuuichi Hosaka
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Patent number: 8814528Abstract: A production method enables use of ultrasonic forming but does not leave a bonding face in a final product. One cuts into a plate member having a first side face and a second side face from the first side face toward the second side face to form a slit that does not reach the second side face; seals lips of the slit to leave an opening; causes superplastic forming of the plate member by pressurizing the plate member in a mold with gas through the opening; and cuts out a portion including the sealed lips.Type: GrantFiled: January 22, 2010Date of Patent: August 26, 2014Assignee: IHI CorporationInventor: Takayuki Iwasaki
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Patent number: 8731791Abstract: When an internal combustion engine is cranked up from a stopped position of a piston in a restart-time first ignition cylinder which is scheduled to start a combustion at the time of an automatic restart of the engine under an automatic stop of the engine during an idling-stop control, a restart-time ignition time interval between a time point when the cranking of the engine is started and a time point when the restart-time first ignition cylinder is initially ignited is calculated. A drive-start timing of a starter motor is delayed according to this restart-time ignition time interval. Thereby, the cranking of the engine is carried out by the starter motor under a state where the hydraulic pressure supplied from the electric oil pump has increased. Thus, the slip in the clutch of the CVT can be suppressed when the gas mixture in the restart-time first ignition cylinder is initially ignited.Type: GrantFiled: April 30, 2009Date of Patent: May 20, 2014Assignee: Nissan Motor Co., Ltd.Inventors: Shouta Hamane, Takayuki Iwasaki, Yoshikazu Hirato
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Publication number: 20140095057Abstract: A remote control device for vehicle is capable of remotely controlling the start and stop of an engine mounted in a vehicle. The remote control device for vehicle includes a remote controller for transmitting a start request and a stop request of the engine, and an engine control unit for stopping the engine by stopping fuel supply to the engine in the case of satisfying, in a state where the engine is started upon receiving the start request, at least one of a condition that a predetermined forced OFF time has elapsed and a condition that the stop request has been received.Type: ApplicationFiled: February 24, 2012Publication date: April 3, 2014Inventors: Kazuma Takahashi, Takayuki Iwasaki
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Patent number: 8652601Abstract: A cover film comprising a substrate layer, an intermediate layer comprising a resin composition containing 50% by mass or more of a metallocene linear low-density polyethylene resin having a density of 0.900 to 0.940×103 kg/m3, and a sealant layer comprising an ethylene-type copolymerized resin containing 50 to 85% by mass of an olefin component.Type: GrantFiled: March 5, 2010Date of Patent: February 18, 2014Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Takayuki Iwasaki, Tetsuo Fujimura, Akira Sasaki
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Publication number: 20140037940Abstract: A cover film including, at least, (A) a substrate layer, (B) an intermediate layer, (C) a release layer and (D) a heat seal layer is provided. The release layer (C) includes a resin composition which includes (a) a styrene-based resin composition and (b) an ethylene-?-olefin random copolymer, with the content of the copolymer (b) in the release layer being 20 to 50 mass %, and which has a Vicat softening temperature of 55 to 80° C., while the heat seal layer (D) includes an acrylic resin having a glass transition temperature of 55 to 80° C. By the cover film, a carrier tape of polystyrene or the like can be so heat-sealed even in a short time as to achieve sufficient peel strength. Further, the resulting heat-sealed carrier tape exhibits little variation in peel strength, so that when peeling, few components fly out of the carrier tape.Type: ApplicationFiled: March 27, 2012Publication date: February 6, 2014Applicant: DENKI KAGAKU KOGYO KABUSHIKI KAISHAInventors: Tetsuo Fujimura, Hisatsugu Tokunaga, Yusuke Tanazawa, Takeshi Ono, Tomoharu Watanabe, Akira Sasaki, Takayuki Iwasaki, Kazuya Sugimoto
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Publication number: 20120209480Abstract: [Problem] To suppress a slip of clutch in an automatic transmission when an internal combustion engine is automatically restarted. [Solution] In a case that the internal combustion engine 1 is cranked up from a stopped position of piston 10 in a restart-time first ignition cylinder which is scheduled to firstly start a combustion at the time of automatic restart of internal combustion engine 1 under an automatic stop of internal combustion engine 1 during an idling-stop control, a restart-time ignition time interval between a time point when the cranking of internal combustion engine 1 is started and a time point when a restart-time first ignition cylinder is initially ignited is calculated. A drive-start timing of starter motor 19 is delayed according to this restart-time ignition time interval. Thereby, the cranking of internal combustion engine 1 is carried out by the starter motor 19 under a state where hydraulic pressure supplied from the electric oil pump 27 has increased.Type: ApplicationFiled: April 30, 2009Publication date: August 16, 2012Inventors: Shouta Hamane, Takayuki Iwasaki, Yoshikazu Hirato
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Patent number: 8207558Abstract: A semiconductor device in which the self-turn-on phenomenon is prevented that can significantly improve power conversion efficiency. The semiconductor device is a system-in-package for power supply applications in which a high-side switch, a low-side switch, and two drivers are included in a single package. The device includes an auxiliary switch disposed between the gate and source of said low-side switch, and a low-side MOSFET 3 for the low-side switch and an auxiliary MOSFET 4 for the auxiliary switch are disposed on the same chip. In this way, the self-turn-on phenomenon can be prevented, allowing the mounting of a low-side MOSFET 3 with a low threshold voltage and thereby significantly improving power conversion efficiency. The gate of the auxiliary MOSFET 4 is driven by the driver for the high-side MOSFET 2, thereby eliminating the need for a new drive circuit and realizing the same pin configuration as existing products, which facilitates easy replacement.Type: GrantFiled: March 17, 2009Date of Patent: June 26, 2012Assignee: Renesas Electronics CorporationInventors: Masaki Shiraishi, Takayuki Iwasaki, Nobuyoshi Matsuura
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Publication number: 20120153890Abstract: A control device of a vehicle which device makes a generated voltage of an alternator variable so that a state of charge SOC of a battery installed in the vehicle reaches a control target includes an idle stop permitting SOC setting unit for setting a battery state of charge SOC in which idle stop is permissible, and a battery SOC adjusting unit for reducing and resetting a control target of the battery state of charge SOC in a range beyond the idle stop permitting SOC when a predetermined operation condition holds.Type: ApplicationFiled: January 6, 2010Publication date: June 21, 2012Inventors: Kazuma Takahashi, Takayuki Iwasaki
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Publication number: 20120003429Abstract: A cover film comprising a substrate layer, an intermediate layer comprising a resin composition containing 50% by mass or more of a metallocene linear low-density polyethylene resin having a density of 0.900 to 0.940×103 kg/m3, and a sealant layer comprising an ethylene-type copolymerized resin containing 50 to 85% by mass of an olefin component.Type: ApplicationFiled: March 5, 2010Publication date: January 5, 2012Applicant: DENKI KAGAKU KOGYO KABUSHIKI KAISHAInventors: Takayuki Iwasaki, Tetsuo Fujimura, Akira Sasaki
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Publication number: 20110274555Abstract: A production method uses ultrasonic forming but does not leave a bonding face exposed to the exterior in a final product. The production method of a leading edge member of a fan blade comprises the steps of causing superplastic forming by using a combination of a first mold having a flow path for gas and a second mold having a female mold to pressurize a plate member with the gas through the flow path to fit the plate member onto the female mold; bonding a backing with the plate member processed with the superplastic forming; and cutting out a periphery of the plate member to obtain a product shape.Type: ApplicationFiled: January 22, 2010Publication date: November 10, 2011Applicant: IHI CorporationInventor: Takayuki Iwasaki
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Publication number: 20110274551Abstract: A production method enables use of ultrasonic forming but does not leave a bonding face in a final product. One cuts into a plate member having a first side face and a second side face from the first side face toward the second side face to form a slit that does not reach the second side face; seals lips of the slit to leave an opening; causes superplastic forming of the plate member by pressurizing the plate member in a mold with gas through the opening; and cuts out a portion including the sealed lips.Type: ApplicationFiled: January 22, 2010Publication date: November 10, 2011Applicant: IHI CorporationInventor: Takayuki Iwasaki
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Patent number: 7704591Abstract: A cover tape comprising at least a substrate layer and a heat sealing layer, wherein (1) an antistatic layer containing an antistatic agent and an anticorrosive agent, is formed on the heat sealing layer, or (2) the heat sealing layer side has an average surface roughness (Ra) of from 0.3 to 1.0 ?m, and has an antistatic agent applied thereon to form an antistatic layer.Type: GrantFiled: April 25, 2005Date of Patent: April 27, 2010Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Takeshi Ono, Masanori Higano, Masanori Ishii, Takayuki Iwasaki
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Publication number: 20090246518Abstract: To provide a cover film with which the temperature range of a sealing iron to obtain peel strength is wide and stability of peel strength is good at the time of peeling, and which is excellent in heat sealing properties to a carrier tape. A cover film comprising a substrate layer and a sealant layer, wherein the substrate layer is made of a biaxially oriented polyester and/or a biaxially oriented polypropylene, the sealant layer contains a hydrogenated resin (a) of a block copolymer of an aromatic vinyl compound and a conjugated diene type hydrocarbon compound, the amount of the aromatic vinyl compound in the resin (a) is at least 20 mass % and at most 45 mass %, and the flowability of the resin (a) is from 1 to 20 g/10 min at a temperature of 230° C. under a load of 2.16 kgf by a measurement method stipulated in JIS K 7210.Type: ApplicationFiled: April 24, 2007Publication date: October 1, 2009Applicant: Denki Kagaku Kogyo Kabushiki KaishaInventors: Tetsuo Fujimura, Takayuki Iwasaki, Masanori Higano, Masatoshi Kawata
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Publication number: 20090179235Abstract: A semiconductor device in which the self-turn-on phenomenon is prevented that can significantly improve power conversion efficiency. The semiconductor device is a system-in-package for power supply applications in which a high-side switch, a low-side switch, and two drivers are included in a single package. The device includes an auxiliary switch disposed between the gate and source of said low-side switch, and a low-side MOSFET 3 for the low-side switch and an auxiliary MOSFET 4 for the auxiliary switch are disposed on the same chip. In this way, the self-turn-on phenomenon can be prevented, allowing the mounting of a low-side MOSFET 3 with a low threshold voltage and thereby significantly improving power conversion efficiency. The gate of the auxiliary MOSFET 4 is driven by the driver for the high-side MOSFET 2, thereby eliminating the need for a new drive circuit and realizing the same pin configuration as existing products, which facilitates easy replacement.Type: ApplicationFiled: March 17, 2009Publication date: July 16, 2009Inventors: Masaki Shiraishi, Takayuki Iwasaki, Nobuyoshi Matsuura
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Patent number: 7522692Abstract: A communication system is provided including a transceiver and an application controller to transmit and receive signals through the transceiver. An isolator which insulates and separates the transceiver and application controller includes primary and secondary side circuits insulated from each other on a substrate and a capacitive insulating means to transfer signals between the primary and second sides while insulating and separating the primary side circuit from the secondary side circuit.Type: GrantFiled: March 7, 2007Date of Patent: April 21, 2009Assignee: Hitachi, Ltd.Inventors: Seigoh Yukutake, Yasuyuki Kojima, Minehiro Nemoto, Masatsugu Amishiro, Takayuki Iwasaki, Shinichiro Mitani, Katsuhiro Furukawa, Chiyoshi Kamada, Atsuo Watanabe, Takayuki Oouchi, Nobuyasu Kanekawa
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Patent number: 7514731Abstract: A semiconductor device in which the self-turn-on phenomenon is prevented that can significantly improve power conversion efficiency. The semiconductor device is a system-in-package for power supply applications in which a high-side switch, a low-side switch, and two drivers are included in a single package. The device includes an auxiliary switch disposed between the gate and source of said low-side switch, and a low-side MOSFET 3 for the low-side switch and an auxiliary MOSFET 4 for the auxiliary switch are disposed on the same chip. In this way, the self-turn-on phenomenon can be prevented, allowing the mounting of a low-side MOSFET 3 with a low threshold voltage and thereby significantly improving power conversion efficiency. The gate of the auxiliary MOSFET 4 is driven by the driver for the high-side MOSFET 2, thereby eliminating the need for a new drive circuit and realizing the same pin configuration as existing products, which facilitates easy replacement.Type: GrantFiled: July 7, 2005Date of Patent: April 7, 2009Assignee: Renesas Technology Corp.Inventors: Masaki Shiraishi, Takayuki Iwasaki, Nobuyoshi Matsuura