Patents by Inventor Yuki Fujita
Yuki Fujita 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: 11338791Abstract: A method for controlling an electric device including: a step of comparing the rotation speed of an internal combustion engine at the time when it has been determined that the internal combustion engine is to transition to a rotation stop state with a specified threshold; and a step of performing rotation-speed increasing control, in a case where the rotation speed of the internal combustion engine at the time of the determination is higher than the threshold, in which in a case where the rotation speed of the internal combustion engine at the time of the determination is not higher than the threshold, the rotation speed of the internal combustion engine is not made higher than the rotation speed at the time of the determination but is let to decrease to stop the internal combustion engine.Type: GrantFiled: December 15, 2017Date of Patent: May 24, 2022Assignee: Nissan Motor Co., Ltd.Inventors: Yuki Fujita, Shunsuke Baba
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Patent number: 11312363Abstract: It is a control method of a hybrid vehicle that includes an engine and an electrical power generation motor that is connected with the engine for controlling a rotational speed of the engine to be a target rotational speed. When an failure with respect to the engine is judged, an upper limit of a target rotational speed of a firing operation is set to a first upper limit rotational speed lower than an upper limit for a normal state. Further, a target rotational speed of a motoring operation is set to be not higher than the first upper limit rotational speed. It becomes possible to carry out transition between the firing operation and the motoring operation quickly.Type: GrantFiled: December 15, 2017Date of Patent: April 26, 2022Assignee: Nissan Motor Co., Ltd.Inventors: Yuki Fujita, Takeo Aizawa, Kazuki Iijima
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Publication number: 20220094234Abstract: An AC electric motor drive system includes a power supply transformer connected to an AC power supply and insulating an AC power supply side and a load side; an AC electric motor; a power converter which converts AC voltage outputted from the power supply transformer to output AC voltage, and which outputs the output AC voltage to the AC electric motor; and a capacitive component having one end connected to the load side of the power supply transformer, and another end grounded.Type: ApplicationFiled: March 24, 2020Publication date: March 24, 2022Applicants: Mitsubishi Electric Corporation, Mitsubishi Electric Engineering Company LimitedInventors: Masayuki OISHI, Kazuyoshi WATABU, Yuki FUJITA, Hiroyuki ICHINOSE
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Patent number: 11268462Abstract: In this evaporated fuel treatment apparatus, there are set a purge condition that is a condition for performing purge control, a first pre purge condition that is met before the purge condition is met, and a second pre purge condition that is met between the purge condition and the first pre purge condition. A purge pump is driven at an idling speed lower than a rated speed to execute idle rotation when the first pre purge condition is met. The purge pump is driven at the rated speed to execute rated rotation when the second pre purge condition is met. A purge valve is opened while the rated rotation is performed when the purge condition is met.Type: GrantFiled: May 29, 2019Date of Patent: March 8, 2022Assignee: AISAN KOGYO KABUSHIKI KAISHAInventor: Yuki Fujita
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Publication number: 20220066198Abstract: A scanning mirror can prevent the oxidation or hydroxylation of a torsion bar, thereby suppressing deterioration of the torsion bar and a manufacturing method for the scanning mirror. A scanning mirror has a torsion bar which is provided so as to support a mirror portion and of which the surface is covered with an ALD layer. The scanning mirror is configured such that the mirror portion can be rotated around an axis that extends along the torsion bar when torsional force is applied to the torsion bar. The scanning mirror is manufactured by forming the mirror portion and the torsion bar and then forming an ALD layer on at least the surface of the torsion bar using an atomic layer deposition method.Type: ApplicationFiled: April 27, 2020Publication date: March 3, 2022Applicant: TOHOKU UNIVERSITYInventors: Kazuhiro HANE, Takashi SASAKI, Yuki FUJITA
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Publication number: 20220045778Abstract: A communication system (100) includes communication device (1) to communication device (9). Communication device (1) to communication device (9) select a first representative device that represents a same domain. Communication device (3) is selected from domain D (1), communication device (6) is selected from domain D (2), and communication device (9) is selected from domain D (3). For communication device (3), communication device (6), and communication device (9) selected from each domain, communication device (3) sets to communication device (3), communication device (6) sets to communication device (6), and communication device (9) sets to communication device (9), domain D (0) as a common domain to which communication device (3), communication device (6), and communication device (9) belong. Communication device (3), communication device (6), and communication device (9) select communication device (9) as a network grandmaster that is a second representative device that represents domain D (0).Type: ApplicationFiled: October 21, 2021Publication date: February 10, 2022Applicant: Mitsubishi Electric CorporationInventors: Yuki Fujita, Daisuke Osagawa
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Publication number: 20220031787Abstract: The problems to be solved by the present invention are to provide a novel agent for preventing and/or treating a neurodegenerative disease, and a pharmaceutical composition comprising the agent for preventing and/or treating a neurodegenerative disease. The problems are solved by providing an agent for preventing and/or treating a neurodegenerative disease, the agent comprising as an active ingredient an extract of Momordica charantia var. pavel, and preferably the agent is for use in treatment or prevention of a disease selected from Alzheimer's disease, Parkinson's disease, Down syndrome, tauopathy (for example, argyrophilic grain dementia, senile dementia of neurofibrillary tangle type, progressive supranuclear palsy, degeneration of cerebral cortex or Pick disease), and dementia with lewy bodies.Type: ApplicationFiled: November 12, 2019Publication date: February 3, 2022Applicants: GREEN TECH CO., LTD., McB.,Co.Inventors: Hachiro SUGIMOTO, Koki NAGASHIMA, Michiaki OKUDA, Yuki FUJITA
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Patent number: 11209993Abstract: Apparatus and methods implement a physical unclonable function (PUF) from NAND operations. A NAND flash memory device may generate an unclonable natural random sequence of bits based on a threshold voltage of a plurality of cells in a memory cell array. The unclonable natural random sequence may be stored starting at an address of the memory cell array. A selected subsequence of the unclonable natural random sequence may be stored in a first set of data latches, and target data may be stored in a second set of data latches. The NAND flash memory device may generate a physical unclonable function (PUF) output by applying an XOR operation to the target data and the selected subsequence. The PUF output may be stored in a set of registers or provided to a memory controller to be used for secure applications such as secure identity detection and secure data transfer.Type: GrantFiled: March 24, 2020Date of Patent: December 28, 2021Assignee: SANDISK TECHNOLOGIES LLCInventors: Yuki Fujita, Kazuto Oku, Kyosuke Matsumoto
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Patent number: 11187167Abstract: An evaporated fuel treatment apparatus includes a canister, a purge passage, a purge pump, a purge valve, and a controller for executing purge control. The controller is configured to switch the purge valve to a closed state or an open state once, subsequently set a concentration sensing flag to ON, and then detect a purge concentration based on a pump downstream pressure or a pump differential pressure at a predetermined timing elapsed by a predetermined time from setting of the concentration sensing flag to ON.Type: GrantFiled: October 7, 2020Date of Patent: November 30, 2021Assignee: AISAN KOGYO KABUSHIKI KAISHAInventor: Yuki Fujita
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Patent number: 11161495Abstract: A fuel-empty-state recovery determination method including: when driving of the hybrid vehicle is started, performing rotation speed control of an electric power generator for a specified time, and then stopping the rotation speed control; in a case where it is detected that a state in which the rotation speed of an engine after stopping the rotation speed control is higher than a threshold continues for more than a first determination time, determining that recovery has been made from a fuel-empty state; in a case where the measured time does not exceed the first determination time, starting measurement of the time during which the rotation speed of the engine is lower than the threshold; and in a case where the measured time exceeds a second determination time, maintaining determination that the vehicle is in a fuel-empty state.Type: GrantFiled: December 15, 2017Date of Patent: November 2, 2021Assignee: Nissan Motor Co., Ltd.Inventors: Yuki Fujita, Shunsuke Baba
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Publication number: 20210303182Abstract: Apparatus and methods implement a physical unclonable function (PUF) from NAND operations. A NAND flash memory device may generate an unclonable natural random sequence of bits based on a threshold voltage of a plurality of cells in a memory cell array. The unclonable natural random sequence may be stored starting at an address of the memory cell array. A selected subsequence of the unclonable natural random sequence may be stored in a first set of data latches, and target data may be stored in a second set of data latches. The NAND flash memory device may generate a physical unclonable function (PUF) output by applying an XOR operation to the target data and the selected subsequence. The PUF output may be stored in a set of registers or provided to a memory controller to be used for secure applications such as secure identity detection and secure data transfer.Type: ApplicationFiled: March 24, 2020Publication date: September 30, 2021Applicant: SANDISK TECHNOLOGIES LLCInventors: Yuki Fujita, Kazuto Oku, Kyosuke Matsumoto
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Publication number: 20210270196Abstract: In this evaporated fuel treatment apparatus, there are set a purge condition that is a condition for performing purge control, a first pre purge condition that is met before the purge condition is met, and a second pre purge condition that is met between the purge condition and the first pre purge condition. A purge pump is driven at an idling speed lower than a rated speed to execute idle rotation when the first pre purge condition is met. The purge pump is driven at the rated speed to execute rated rotation when the second pre purge condition is met. A purge valve is opened while the rated rotation is performed when the purge condition is met.Type: ApplicationFiled: May 29, 2019Publication date: September 2, 2021Applicant: AISAN KOGYO KABUSHIKI KAISHAInventor: Yuki FUJITA
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Patent number: 11081192Abstract: A non-volatile memory device comprising a memory cell region having a plurality of co-planar memory cell planes arranged in a plane parallel to a semiconductor substrate, with each memory cell plane comprising a plurality of sub-planes disposed adjacent one another along an axis that is parallel to the substrate. Further, each memory cell plane comprises a plurality of sense amplifier regions arranged along the axis in an alternating pattern with the sub-planes such that adjacent to each sub-plane is a sense amplifier region and each sense amplifier region is operable with respect to at least a fraction of the bit lines of the two sub-planes immediately adjacent the sense amplifier region.Type: GrantFiled: October 30, 2019Date of Patent: August 3, 2021Assignee: SanDiskTechnologies LLCInventors: Hiroki Yabe, Koichiro Hayashi, Takuya Ariki, Yuki Fujita, Naoki Ookuma, Kazuki Yamauchi, Masahito Takehara, Toru Miwa
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Publication number: 20210174615Abstract: A driving assistance device includes a malfunction detection unit configured to detect a plurality of malfunctions in devices mounted on a vehicle, a candidate selection unit configured to select candidates for a plurality of actions urged on a driver in accordance with the plural malfunctions detected by the malfunction detection unit, a priority determination unit configured to choose a candidate having a higher priority as an action urged on the driver from the candidates for the plural actions selected by the candidate selection unit, and an information unit configured to inform the driver of the action to be urged on the driver chosen by the priority determination unit.Type: ApplicationFiled: December 15, 2017Publication date: June 10, 2021Applicant: NISSAN MOTOR CO., LTD.Inventors: Kazuki IIJIMA, Yuki FUJITA
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Publication number: 20210162982Abstract: A method for controlling an electric device including: a step of comparing the rotation speed of an internal combustion engine at the time when it has been determined that the internal combustion engine is to transition to a rotation stop state with a specified threshold; and a step of performing rotation-speed increasing control, in a case where the rotation speed of the internal combustion engine at the time of the determination is higher than the threshold, in which in a case where the rotation speed of the internal combustion engine at the time of the determination is not higher than the threshold, the rotation speed of the internal combustion engine is not made higher than the rotation speed at the time of the determination but is let to decrease to stop the internal combustion engine.Type: ApplicationFiled: December 15, 2017Publication date: June 3, 2021Inventors: Yuki Fujita, Shunsuke Baba
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Publication number: 20210134375Abstract: A non-volatile memory device comprising a memory cell region having a plurality of co-planar memory cell planes arranged in a plane parallel to a semiconductor substrate, with each memory cell plane comprising a plurality of sub-planes disposed adjacent one another along an axis that is parallel to the substrate. Further, each memory cell plane comprises a plurality of sense amplifier regions arranged along the axis in an alternating pattern with the sub-planes such that adjacent to each sub-plane is a sense amplifier region and each sense amplifier region is operable with respect to at least a fraction of the bit lines of the two sub-planes immediately adjacent the sense amplifier region.Type: ApplicationFiled: October 30, 2019Publication date: May 6, 2021Applicant: SanDisk Technologies LLCInventors: Hiroki Yabe, Koichiro Hayashi, Takuya Ariki, Yuki Fujita, Naoki Ookuma, Kazuki Yamauchi, Masahito Takehara, Toru Miwa
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Publication number: 20210115862Abstract: An evaporated fuel treatment apparatus includes a canister, a purge passage, a purge pump, a purge valve, and a controller for executing purge control. The controller is configured to switch the purge valve to a closed state or an open state once, subsequently set a concentration sensing flag to ON, and then detect a purge concentration based on a pump downstream pressure or a pump differential pressure at a predetermined timing elapsed by a predetermined time from setting of the concentration sensing flag to ON.Type: ApplicationFiled: October 7, 2020Publication date: April 22, 2021Applicant: AISAN KOGYO KABUSHIKI KAISHAInventor: Yuki FUJITA
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Patent number: 10903736Abstract: There is provided a power converter which can suppress a surge voltage and reduce noise flowing from an input of a power changer. The power converter includes an inverter circuit 140, a capacitor 514 for smoothing DC power, a capacitor 515 for removing noise, and conductors 564p and 564n. The conductors 564p and 564n are connected to the capacitors 514 and 515 when power side terminals 562p and 562n are connected to an inverter circuit 140, and power source side terminals 561p and 561n are connected to a battery 136. In the conductors 564p and 564n, a parasitic inductance L1 between capacitor terminals 563p and 563n and capacitor terminals 560p and 560n is larger than a parasitic inductance L2 between capacitor terminals 563p and 563n and the power side terminals 562p and 562n.Type: GrantFiled: July 22, 2019Date of Patent: January 26, 2021Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Youhei Nishizawa, Kaname Sasaki, Yutaka Okubo, Yuki Fujita
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Patent number: 10885984Abstract: A memory device comprising a semiconductor substrate in which a memory cell region and a peripheral circuitry region are defined, wherein the memory cell region has a plurality of non-volatile memory cells arranged in one or more arrays and the peripheral circuitry region has at least one sense amplifier region comprised of at least one low voltage transistor. Further, a deep N-well region is formed in the substrate, wherein the memory cell region and the peripheral circuitry region are placed on the deep N-well region such that, in the event that a high erase voltage (VERA) is applied to the memory cell region during an erase operation, the high erase voltage is applied to all terminals of the at least one low voltage resistor, thereby protecting the low voltage transistor by preventing it from experiencing a large voltage difference between its terminals.Type: GrantFiled: October 30, 2019Date of Patent: January 5, 2021Assignee: SanDisk Technologies LLCInventors: Hiroki Yabe, Koichiro Hayashi, Takuya Ariki, Yuki Fujita, Naoki Ookuma, Kazuki Yamauchi, Masahito Takehara, Toru Miwa
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Publication number: 20200411806Abstract: A positive electrode of a lithium secondary battery includes a positive electrode current collector and a positive electrode active material plate that is a plate-like ceramic sintered compact containing a lithium complex oxide. The positive plate is joined to the positive electrode current collector and opposes a separator. A negative electrode includes a negative electrode current collector and a negative electrode active material layer containing a carbonaceous material or a lithium occlusion substance. The negative layer coats the negative electrode current collector and opposes the separator. An outer sheath is joined to the positive electrode current collector via a joint layer and joined to the negative electrode current collector via a joint layer. Joint strength between the negative electrode current collector and the outer sheath is lower than joint strength between the positive electrode current collector and the outer sheath.Type: ApplicationFiled: September 14, 2020Publication date: December 31, 2020Applicant: NGK INSULATORS, LTD.Inventors: Haruo OTSUKA, Yuki FUJITA