Patents by Inventor Susumu Maeda
Susumu Maeda 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: 12122846Abstract: Provided are chimeric antigen receptors (CAR) specific to a selected tumor antigen. Also provided are structure designs and function profiles of provided CAR candidates.Type: GrantFiled: June 30, 2023Date of Patent: October 22, 2024Assignees: FATE THERAPEUTICS, INC., ONO PHARMACEUTICAL CO., LTD.Inventors: Bahram Valamehr, Tom Tong Lee, Martin Hosking, Susumu Yamamoto, Tatsuo Maeda
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Publication number: 20240339315Abstract: To provide a method of manufacturing silicon wafers having a low oxygen concentration and being provided with the gettering capability of heavy metals even when the density of BMD is low. The method includes a step of placing wafers sliced from a silicon single crystal and having an oxygen concentration in the range of 1×1016 atoms/cm3 to 7×1017 atoms/cm3, in a chamber and a step of performing rapid thermal processing at a maximum temperature reached of not less than 1250° C. or not more than 1350° C. after introducing a mixed gas having an oxygen partial pressure in the range of 1% to 10% of oxygen and an inert gas.Type: ApplicationFiled: April 4, 2024Publication date: October 10, 2024Applicant: GLOBALWAFERS JAPAN CO., LTD.Inventors: Susumu MAEDA, Haruo SUDO, Hisashi MATSUMURA
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Publication number: 20240304458Abstract: A clean silicon wafer, having a DZ layer free of micro-defects formed in a device active region on the surface of the thermally-processed silicon wafer, an IG layer having a high gettering capability formed in a bulk layer, and little heavy metal contamination on the wafer surface is manufactured. A method for manufacturing a silicon wafer for performing the rapid thermal process for a silicon wafer in a furnace, the method performs the rapid thermal process with a thermal budget of 53% or more and 65% or less, in terms of a thermal budget with temperature and time, when a condition where a thermal process at a highest temperature of 1350° C. is maintained for a predetermined longest holding time is taken as 100% of the thermal budget.Type: ApplicationFiled: February 15, 2022Publication date: September 12, 2024Applicant: GLOBAL WAFERS JAPAN CO., LTD.Inventors: Susumu MAEDA, Haruo SUDO, Hisashi MATSUMURA, Tatsuhiko AOKI, Toru YAMASHITA
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Publication number: 20240302436Abstract: A short circuit detection device for a rotating electrical machine includes: a signal processing device including a signal acquisition unit, a signal decomposing unit, a specific frequency component reducing unit, a signal conversion unit, and a short circuit detection unit; and a magnetic detector placed inside a stator, and detects short circuit of a field winding. The signal decomposing unit decomposes a voltage signal from the signal acquisition unit into a plurality of frequency components having different orders. The specific frequency component reducing unit reduces frequency components for odd-number orders and frequency components for even-number orders higher than a threshold less than a fundamental order of a slot harmonic. The signal conversion unit performs conversion to a voltage signal. The short circuit detection unit generates a difference waveform between voltage signals corresponding to magnetic poles, and detects short circuit of the field winding and a short circuit position thereof.Type: ApplicationFiled: March 10, 2021Publication date: September 12, 2024Applicant: Mitsubishi Electric CorporationInventors: Yuji TAKIZAWA, Atsushi YAMAMOTO, Susumu MAEDA
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Patent number: 12072392Abstract: Provided is a short-circuit detection device including: a signal acquisition unit configured to acquire, from a magnetic flux detector configured to detect a magnetic flux generated in an air gap between a rotor and a stator of a rotating electric machine, a detection signal corresponding to the magnetic flux; a signal processing unit configured to subject the detection signal acquired by the signal acquisition unit to filtering of removing at least one component of odd-order components included in the detection signal, to thereby generate a filtered signal being the detection signal subjected to the filtering; and a short-circuit detection unit configured to detect a short circuit of a field winding through use of the filtered signal generated by the signal processing unit.Type: GrantFiled: April 12, 2019Date of Patent: August 27, 2024Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Yuji Takizawa, Haruyuki Kometani, Kenta Motoyoshi, Atsushi Yamamoto, Susumu Maeda, Nobuaki Muroki
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Publication number: 20230389591Abstract: At least one kind of herbal medicine selected from the group consisting of: Component (1): Longan aril, common fenugreek seed, Lycium fruit, songaria cynomorium herb, black sesame, Dipsacus japonicus root, Drynaria herb, flatstem milkvetch seed, black bean, stink-bug, sea horse and donkey glue. Component (2): Ligustrum fruit, oyster shell, yerbadetajo herb, mulberry fruit, cassia seed, mentha herb, mulberry leaf, gardenia fruit, green tea leaf, tangle weed, Chrysanthemum indicum L., Oldenlandia herbacea, plantago seed, plantago herb, wheat seed, feather cockscomb seed, chrysanthemum flower, dandelion herb, Isatis tinctoria L., barbated skullcup herb, snowbellleaf tickclover herb, turmeric, garden burnet root, and Crocus sativus. Component (3): Curcuma rhizome, Suberect spatholobus stem, wild turmeric, Sparganium rhizome, Luffa aegyptica Mill.Type: ApplicationFiled: October 20, 2021Publication date: December 7, 2023Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Katsunori SASAKI, Keiko HIRANO, Takamitsu YOSHIDA, Susumu MAEDA, Yuki KITAMAKI, Yota SHIMATO, Mari YANASE
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Patent number: 11695366Abstract: Provided are a short circuit state analyzer to compare difference value when the AC excitation current is applied at a first frequency with a threshold value, to estimate a short circuit resistance from the difference value based on data indicating a relationship between the short circuit resistance and the difference value at the first frequency when the difference value is smaller than the threshold value, to cause an excitation power supply to apply the AC excitation current to the field windings at a second frequency lower than the first frequency when the difference value is equal to or greater than the threshold value, and to estimate the short circuit resistance from a difference value obtained by the AC excitation current at the second frequency based on data indicating a relationship between the short circuit resistance and the difference value at the second frequency.Type: GrantFiled: January 27, 2020Date of Patent: July 4, 2023Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Yuji Takizawa, Haruyuki Kometani, Ryosuke Kawashima, Kohei Majima, Susumu Maeda
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Publication number: 20230204667Abstract: A short-circuit detection device for a rotating electric machine sets an order lower than a fundamental order of a slot harmonic wave as a threshold value, and reduces, among the plurality of frequency components, even-order frequency components having orders higher than the threshold value and odd-order frequency components, converts a plurality of frequency components output from the specific frequency component reduction unit into a voltage signal, generates a difference waveform of voltage signals respectively corresponding to adjacent magnetic poles, detects a short-circuit of a field winding based on a shape of the difference waveform, and estimates a short-circuit position of the field winding, and determines an estimation accuracy of the short-circuit position of the field winding based on a degree of symmetry of a waveform of a maximum wave with respect to a peak angle of the difference waveform serving as a center.Type: ApplicationFiled: July 8, 2020Publication date: June 29, 2023Applicant: Mitsubishi Electric CorporationInventors: Yuji TAKIZAWA, Atsushi YAMAMOTO, Susumu MAEDA, Nobuaki MUROKI
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Publication number: 20220390519Abstract: The short-circuit detection device according to the present disclosure includes: a signal acquisition unit configured to acquire, from a magnetic flux detector configured to detect a magnetic flux generated in a gap between a rotor and a stator of a rotary electric machine, one detected signal based on the magnetic flux and set the one detected signal as a first detected signal and a second detected signal; a signal processing unit configured to perform frequency analysis on the first detected signal, and generate and decode a voltage signal simulating a voltage state assumed in a normal case; and a signal comparison unit configured to perform comparison between a decoded signal obtained through the decoding by the signal processing unit and the second detected signal transmitted from the signal acquisition unit, to detect a short-circuit in a field winding of the rotary electric machine.Type: ApplicationFiled: December 26, 2019Publication date: December 8, 2022Applicant: Mitsubishi Electric CorporationInventors: Yuji TAKIZAWA, Haruyuki KOMETANI, Atsushi YAMAMOTO, Susumu MAEDA, Nobuaki MUROKI
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Publication number: 20220376645Abstract: Provided are a short circuit state analyzer to compare difference value when the AC excitation current is applied at a first frequency with a threshold value, to estimate a short circuit resistance from the difference value based on data indicating a relationship between the short circuit resistance and the difference value at the first frequency when the difference value is smaller than the threshold value, to cause an excitation power supply to apply the AC excitation current to the field windings at a second frequency lower than the first frequency when the difference value is equal to or greater than the threshold value, and to estimate the short circuit resistance from a difference value obtained by the AC excitation current at the second frequency based on data indicating a relationship between the short circuit resistance and the difference value at the second frequency.Type: ApplicationFiled: January 27, 2020Publication date: November 24, 2022Applicant: Mitsubishi Electric CorporationInventors: Yuji TAKIZAWA, Haruyuki KOMETANI, Ryosuke KAWASHIMA, Kohei MAJIMA, Susumu MAEDA
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Publication number: 20220146593Abstract: Provided is a short-circuit detection device including: a signal acquisition unit configured to acquire, from a magnetic flux detector configured to detect a magnetic flux generated in an air gap between a rotor and a stator of a rotating electric machine, a detection signal corresponding to the magnetic flux; a signal processing unit configured to subject the detection signal acquired by the signal acquisition unit to filtering of removing at least one component of odd-order components included in the detection signal, to thereby generate a filtered signal being the detection signal subjected to the filtering; and a short-circuit detection unit configured to detect a short circuit of a field winding through use of the filtered signal generated by the signal processing unit.Type: ApplicationFiled: April 12, 2019Publication date: May 12, 2022Applicant: Mitsubishi Electric CorporationInventors: Yuji TAKIZAWA, Haruyuki KOMETANI, Kenta MOTOYOSHI, Atsushi YAMAMOTO, Susumu MAEDA, Nobuaki MUROKI
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Publication number: 20220120822Abstract: Provided is a short-circuit detection device configured to detect a short circuit of a field winding wound in a plurality of rotor slots in a rotor of a rotating electric machine, the short-circuit detection device including: a signal conversion unit configured to convert a detection signal in which a circumferential distribution of a magnetic flux of the rotor is detected into an energy equivalent signal corresponding to a circumferential distribution of magnetic energy of the rotor; and a short-circuit detection unit configured to detect a rotor slot in which the short circuit has occurred through use of the energy equivalent signal.Type: ApplicationFiled: March 12, 2019Publication date: April 21, 2022Applicant: Mitsubishi Electric CorporationInventors: Yuji TAKIZAWA, Haruyuki KOMETANI, Atsushi YAMAMOTO, Susumu MAEDA, Nobuaki MUROKI
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Patent number: 11245302Abstract: An electric pump apparatus includes a motor, an inverter board, a coil support, a housing, and a pump portion driven by the motor. Coils include first end portions and second end portions drawn out from the coils, the first end portion and the second end portion defining both end portions of each of conducting wires of the coils. The inverter board is on a first axial side of the motor. The coil support includes a neutral point busbar that electrically connects the coils to one another. The coil support includes a first region including the first end portions arranged therein, each first end portion being directly connected to the inverter board, and a second region including the second end portions and the neutral point busbar arranged therein, each second end portion being connected to the neutral point busbar.Type: GrantFiled: September 18, 2019Date of Patent: February 8, 2022Assignees: NIDEC CORPORATION, NIDEC TOSOK CORPORATIONInventors: Kazuhiro Homma, Tomohiro Sakata, Susumu Maeda, Masato Aono, Takashi Hattori
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Patent number: 11162191Abstract: A processing temperature TS by a rapid thermal processing furnace is 1250° C. or more and 1350° C. or less, and a cooling rate Rd from the processing temperature is in a range of 20° C./s or more and 150° C./s or less, and thermal processing is performed by adjusting the processing temperature TS and the cooling rate Rd within a range between the upper limit P=0.00207TS·Rd?2.52Rd+13.3 (Formula (A)) and the lower limit P=0.000548TS·Rd?0.605Rd?0.511 (Formula (B)) of an oxygen partial pressure P in a thermal processing atmosphere.Type: GrantFiled: March 23, 2017Date of Patent: November 2, 2021Assignee: GLOBALWAFERS JAPAN CO., LTD.Inventors: Susumu Maeda, Hironori Banba, Haruo Sudo, Hideyuki Okamura, Koji Araki, Koji Sueoka, Kozo Nakamura
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Publication number: 20200181802Abstract: A processing temperature TS by a rapid thermal processing furnace is 1250° C. or more and 1350° C. or less, and a cooling rate Rd from the processing temperature is in a range of 20° C./s or more and 150° C./s or less, and thermal processing is performed by adjusting the processing temperature TS and the cooling rate Rd within a range between the upper limit P=0.00207TS·Rd?2.52Rd+13.3 (Formula (A)) and the lower limit P=0.000548TS·Rd?0.605Rd?0.511 (Formula (B)) of an oxygen partial pressure P in a thermal processing atmosphere.Type: ApplicationFiled: March 23, 2017Publication date: June 11, 2020Inventors: Susumu MAEDA, Hironori BANBA, Haruo SUDO, Hideyuki OKAMURA, Koji ARAKI, Koji SUEOKA, Kozo NAKAMURA
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Patent number: 10648101Abstract: A silicon wafer includes a denuded zone which is a surface layer and of which the density of vacancy-oxygen complexes which are complexes of vacancies and oxygen is less than 1.0×1012/cm3. An intermediate layer is disposed inwardly of the denuded zone so as to be adjacent to the denuded zone. The density of the vacancy-oxygen complexes in the intermediate layer increases gradually inwardly in the depth direction from the boundary with the denuded zone within a range of 1.0×1012/cm3 or over and less than 5.0×1012/cm3. The intermediate layer has a depth determined corresponding to the depth of the denuded zone. A bulk layer is disposed inwardly of the intermediate layer so as to be adjacent to the intermediate layer. The density of the vacancy-oxygen complexes in the bulk layer is 5.0×1012/cm3 or over.Type: GrantFiled: February 24, 2017Date of Patent: May 12, 2020Assignee: GLOBALWAFERS JAPAN CO., LTD.Inventors: Susumu Maeda, Hironori Banba, Haruo Sudo, Hideyuki Okamura, Koji Araki, Koji Sueoka, Kozo Nakamura
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Publication number: 20200106321Abstract: An electric pump apparatus includes a motor, an inverter board, a coil support, a housing, and a pump portion driven by the motor. Coils include first end portions and second end portions drawn out from the coils, the first end portion and the second end portion defining both end portions of each of conducting wires of the coils. The inverter board is on a first axial side of the motor. The coil support includes a neutral point busbar that electrically connects the coils to one another. The coil support includes a first region including the first end portions arranged therein, each first end portion being directly connected to the inverter board, and a second region including the second end portions and the neutral point busbar arranged therein, each second end portion being connected to the neutral point busbar.Type: ApplicationFiled: September 18, 2019Publication date: April 2, 2020Inventors: Kazuhiro HOMMA, Tomohiro SAKATA, Susumu MAEDA, Masato AONO, Takashi HATTORI
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Patent number: 10385439Abstract: A first nitriding process step is performed in which a steel member is subjected to a nitriding process in a nitriding gas atmosphere having a nitriding potential with which a nitride compound layer having a ?? phase or an ? phase is generated, and thereafter a second nitriding process step is performed in which the steel member is subjected to a nitriding process in a nitriding gas atmosphere having a nitriding potential lower than the nitriding potential in the first nitriding process step, to thereby precipitate the ?? phase in the nitride compound layer. It is possible to generate the nitride compound layer having a desired phase mode uniformly all over a component to be treated and to manufacture a nitrided steel member high in pitting resistance and bending fatigue strength.Type: GrantFiled: September 30, 2014Date of Patent: August 20, 2019Assignee: DOWA THERMOTECH CO., LTD.Inventors: Yuichiro Shimizu, Susumu Maeda, Atsushi Kobayashi
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Patent number: 10370747Abstract: A nitrided component has a chemical composition consisting of, by mass percent, C: 0.07-0.14%, Si: 0.10-0.30%, Mn: 0.4-1.0%, S: 0.005-0.030%, Cr: 1.0-1.5%, Mo: ?0.05% (including 0%), Al: 0.010% or more to less than 0.10%, V: 0.10-0.25%, optionally at least one element selected from Cu: ?0.30% and Ni: ?0.25%, [0.61Mn+1.11Cr+0.35Mo+0.47V?2.30], and the balance of Fe and impurities. P, N, Ti and O among the impurities are P: ?0.030%, N: ?0.008%, Ti: ?0.005%, and O: ?0.0030%. The nitrided composition is suitable for use as an automobile ring gear. The nitrided component has a surface hardness of 650-900 HV, core hardness being ?150 HV, effective case depth of ?0.15 mm, has excellent bending fatigue strength and surface fatigue strength although the content of Mo is as low as ?0.05% and has a small amount of expansion caused by nitriding.Type: GrantFiled: June 15, 2017Date of Patent: August 6, 2019Assignees: NIPPON STEEL CORPORATION, HONDA MOTOR CO., LTD.Inventors: Hideki Imataka, Masato Yuya, Yuya Gyotoku, Atsushi Kobayashi, Susumu Maeda
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Publication number: 20190119828Abstract: A silicon wafer includes a denuded zone which is a surface layer and of which the density of vacancy-oxygen complexes which are complexes of vacancies and oxygen is less than 1.0×1012/cm3. An intermediate layer is disposed inwardly of the denuded zone so as to be adjacent to the denuded zone. The density of the vacancy-oxygen complexes in the intermediate layer increases gradually inwardly in the depth direction from the boundary with the denuded zone within a range of 1.0×1012/cm3 or over and less than 5.0×1012/cm3. The intermediate layer has a depth determined corresponding to the depth of the denuded zone. A bulk layer is disposed inwardly of the intermediate layer so as to be adjacent to the intermediate layer. The density of the vacancy-oxygen complexes in the bulk layer is 5.0×1012/cm3 or over.Type: ApplicationFiled: February 24, 2017Publication date: April 25, 2019Inventors: Susumu MAEDA, Hironori BANBA, Haruo SUDO, Hideyuki OKAMURA, Koji ARAKI, Koji SUEOKA, Kozo NAKAMURA