Patents by Inventor Naoya Tokoo
Naoya Tokoo 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: 20240025220Abstract: This shock absorber is disposed between a vehicle body and an axle. The shock absorber includes a bottomed cylindrical cylinder, a spring seat, and a mold release rib. The spring seat is formed integrally with the cylinder. The spring seat protrudes in a radial direction of the cylinder from the cylinder to support a suspension spring. The mold release rib is formed integrally with the cylinder and the spring seat. The mold release rib connects an outer circumferential portion of the spring seat and the cylinder. The mold release rib has a face part provided at an outer end portion of the cylinder in the radial direction.Type: ApplicationFiled: August 30, 2021Publication date: January 25, 2024Inventors: Sadatomo MATSUMURA, Koichi YAMAKA, Naoya TOKOO, Yoshihiro YAMAGUCHI
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Publication number: 20230322035Abstract: This shock absorber includes an outer cylinder, and a bracket having a pair of extension parts. The outer cylinder has an opening and into which the inner cylinder is inserted and fixed. The pair of extension parts extend outward in a radial direction of the outer cylinder from different positions spaced apart in a circumferential direction of the outer cylinder. A hole portion and a reduced-rigidity part are provided in the pair of extension parts. The hole portion is provided at a position facing an attachment hole of an attachment member disposed between the pair of extension parts. The reduced-rigidity part is disposed at a disposition position on the outer cylinder side of the hole portion at the same position as the hole portion in the axial direction of the outer cylinder. The reduced-rigidity part has a lower rigidity than a position different from the disposition position.Type: ApplicationFiled: August 19, 2021Publication date: October 12, 2023Inventors: Yoshihiro YAMAGUCHI, Sadatomo MATSUMURA, Koichi YAMAKA, Naoya TOKOO
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Patent number: 11180833Abstract: There is provided a Cr-based two-phase alloy including two phases of a ferrite phase and an austenite phase that are mixed with each other. A chemical composition of the Cr-based two-phase alloy consists of a main component, an auxiliary component, impurities, a first optional auxiliary component, and a second optional auxiliary component. The main component consists of 33-61 mass % Cr, 18-40 mass % Ni and 10-33 mass % Fe, and a total content of the Ni and the Fe is 37-65 mass %. The auxiliary component consists of 0.1-2 mass % Mn, 0.1-1 mass % Si, 0.005-0.05 mass % Al, and 0.02-0.3 mass % Sn. The impurities include 0.04 mass % or less of P, 0.01 mass % or less of S, 0.03 mass % or less of C, 0.04 mass % or less of N, and 0.05 mass % or less of O.Type: GrantFiled: January 19, 2017Date of Patent: November 23, 2021Assignee: HITACHI, LTD.Inventors: Tomonori Kimura, Yasuhisa Aono, Makoto Ogata, Naoya Tokoo, Yasuo Kondo, Masafumi Noujima
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Publication number: 20190100825Abstract: There is provided a Cr-based two-phase alloy including two phases of a ferrite phase and an austenite phase that are mixed with each other. A chemical composition of the Cr-based two-phase alloy consists of a main component, an auxiliary component, impurities, a first optional auxiliary component, and a second optional auxiliary component. The main component consists of 33-61 mass % Cr, 18-40 mass % Ni and 10-33 mass % Fe, and a total content of the Ni and the Fe is 37-65 mass %. The auxiliary component consists of 0.1-2 mass % Mn, 0.1-1 mass % Si, 0.005-0.05 mass % Al, and 0.02-0.3 mass % Sn. The impurities include 0.04 mass % or less of P, 0.01 mass % or less of S, 0.03 mass % or less of C, 0.04 mass % or less of N, and 0.05 mass % or less of O.Type: ApplicationFiled: January 19, 2017Publication date: April 4, 2019Applicant: HITACHI, LTD.Inventors: Tomonori KIMURA, Yasuhisa AONO, Makoto OGATA, Naoya TOKOO, Yasuo KONDO, Masafumi NOUJIMA
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Publication number: 20190071754Abstract: An object of the invention is to provide a two-phase alloy which contains inexpensive Cr as a main component, and which is superior in strength properties including corrosion resistance and toughness, and in abrasion resistance to conventional ones under a high corrosion circumstance such as in an oil well. The invention is a Cr based two-phase alloy including two phases of a ferrite phase and an austenite phase in a mixed state, in which a chemical composition of the Cr based two-phase alloy consists of a major component, an accessory component, impurities, a first optional accessory component, and a second optional accessory component, and the major component consists of 33% by mass or more and 65% by mass or less of Cr, 18% by mass or more and 40% by mass or less of Ni, and 10% by mass or more and 33% by mass or less of Fe.Type: ApplicationFiled: January 30, 2017Publication date: March 7, 2019Applicant: HITACHI, LTD.Inventors: Tomonori KIMURA, Masafumi NOUJIMA, Yasuhisa AONO, Makoto OGATA, Naoya TOKOO
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Publication number: 20180123105Abstract: The present invention proposes a structure of a battery module in which a spacer can slide by means of a guide member constituting the battery module and can be positioned. A battery module according to the present invention is a battery module 9 provided with a battery block 8 in which a plurality of rectangular battery cells 1 are arranged and laminated, and includes a spacer 2 which intervenes between the plurality of battery cells 1, guide members 4 and 5 which slidably support the spacer 2 along a laminating direction of the battery cells 1, and end plates 3 as a pair which are respectively arranged on one side and the other side of the guide members 4 and 5 in a sliding direction and which sandwich the battery block 8 from both sides in the sliding direction.Type: ApplicationFiled: December 26, 2017Publication date: May 3, 2018Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Naoya TOKOO, Osamu KUBOTA, Hidekazu FUJIMURA, Michihiro KIMURA, Naoki KOJIMA, Takashi SUZUKI
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Patent number: 9954193Abstract: In an organic light-emitting element including a first electrode, a second electrode, and a light-emitting layer placed between the first electrode and the second electrode, the light-emitting layer includes a host material, a first emitter, and a second emitter, the emission peak wavelength of the first emitter is longer than the emission peak wavelength of the second emitter, and an aromatic heterocyclic ligand or an auxiliary ligand of the first emitter include an electron withdrawing group. Accordingly, an organic light-emitting element can be provided in which the HOMO value of a specific luminescent dopant is closer to the HOMO value of another luminescent dopant.Type: GrantFiled: July 11, 2012Date of Patent: April 24, 2018Assignee: HITACHI, LTD.Inventors: Sukekazu Aratani, Hirotaka Sakuma, Shingo Ishihara, Naoya Tokoo, Hiroshi Sasaki
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Patent number: 9876207Abstract: The present invention proposes a structure of a battery module in which a spacer can slide by means of a guide member constituting the battery module and can be positioned. A battery module according to the present invention is a battery module 9 provided with a battery block 8 in which a plurality of rectangular battery cells 1 are arranged and laminated, and includes a spacer 2 which intervenes between the plurality of battery cells 1, guide members 4 and 5 which slidably support the spacer 2 along a laminating direction of the battery cells 1, and end plates 3 as a pair which are respectively arranged on one side and the other side of the guide members 4 and 5 in a sliding direction and which sandwich the battery block 8 from both sides in the sliding direction.Type: GrantFiled: May 28, 2014Date of Patent: January 23, 2018Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Naoya Tokoo, Osamu Kubota, Hidekazu Fujimura, Michihiro Kimura, Naoki Kojima, Takashi Suzuki
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Publication number: 20160301051Abstract: Provided is an assembled battery which can secure airtightness of a flow passage without a need of precise alignment when the flow passage is configured to discharge a gas released from a gas discharge valve and regardless of expansion/contraction of a battery. A battery holder includes a main body member which abuts on a wide surface of a battery housing in the direction of a thickness and an upper member of which one end is fixed to an upper end of the main body member and the other end abuts on an upper surface of the battery housing and is extended in the direction of the thickness. The upper member is formed to surround the gas discharge valve, and abuts on a lower surface of a gas conduit member to form a gas passage from the gas discharge valve to the gas conduit member.Type: ApplicationFiled: January 21, 2015Publication date: October 13, 2016Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Osamu KUBOTA, Naoya TOKOO, Takashi SUZUKI, Naoki KOJIMA
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Publication number: 20160149180Abstract: The present invention proposes a structure of a battery module in which a spacer can slide by means of a guide member constituting the battery module and can be positioned. A battery module according to the present invention is a battery module 9 provided with a battery block 8 in which a plurality of rectangular battery cells 1 are arranged and laminated, and includes a spacer 2 which intervenes between the plurality of battery cells 1, guide members 4 and 5 which slidably support the spacer 2 along a laminating direction of the battery cells 1, and end plates 3 as a pair which are respectively arranged on one side and the other side of the guide members 4 and 5 in a sliding direction and which sandwich the battery block 8 from both sides in the sliding direction.Type: ApplicationFiled: May 28, 2014Publication date: May 26, 2016Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Naoya TOKOO, Osamu KUBOTA, Hidekazu FUJIMURA, Michihiro KIMURA, Naoki KOJIMA, Takashi SUZUKI
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Publication number: 20140138663Abstract: In an organic light-emitting element including a first electrode, a second electrode, and a light-emitting layer placed between the first electrode and the second electrode, the light-emitting layer includes a host material, a first emitter, and a second emitter, the emission peak wavelength of the first emitter is longer than the emission peak wavelength of the second emitter, and an aromatic heterocyclic ligand or an auxiliary ligand of the first emitter include an electron withdrawing group. Accordingly, an organic light-emitting element can be provided in which the HOMO value of a specific luminescent dopant is closer to the HOMO value of another luminescent dopant.Type: ApplicationFiled: July 11, 2012Publication date: May 22, 2014Inventors: Sukekazu Aratani, Hirotaka Sakuma, Shingo Ishihara, Naoya Tokoo, Hiroshi Sasaki
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Publication number: 20130153881Abstract: The present invention provides an organic light-emitting device including a first electrode (101), a second electrode (102), organic multi-layers (105, 115) in which the organic multi-layers (105, 115) is formed between the first electrode (101) and the second electrode (102) and has a hole blocking layer (16), an emission layer (15), and an electron blocking layer (14), and the emission layer 15 is interposed between the hole blocking layer (16) and the electron blocking layer (14), a first light-emitting dopant is added to the hole blocking layer (16), a second light-emitting dopant is added to the emission layer (15), a third light-emitting dopant is added to the electron blocking layer (14), and the first light-emitting dopant and the third light-emitting dopant trap carriers penetrating the emission layer. According to the invention, the emission layer can emit light at high efficiency and deterioration of the emission layer can be suppressed.Type: ApplicationFiled: August 16, 2011Publication date: June 20, 2013Applicant: HITACHI, LTD.Inventors: Naoya Tokoo, Shingo Ishihara, Sukekazu Aratani, Hirotaka Sakuma
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Patent number: 8098013Abstract: A plasma display device includes: a front substrate and a back substrate facing each other and interposing a discharge gap; and a plurality of discharge cells formed by the front substrate and the back substrate, wherein a mixture gas containing Xe is filled in the discharge gap, and a red, green, or blue phosphor materials is arranged in each of the discharge cells. The plasma display device performs a reset operation by, at least, a weak discharge. A crystal material is arranged in the red, green, and blue phosphor materials so as to make weak discharge firing voltages for reset discharges in respective discharge cells uniform.Type: GrantFiled: July 14, 2009Date of Patent: January 17, 2012Assignee: Hitachi Consumer Electronics Co., Ltd.Inventors: Norihiro Uemura, Shunichiro Nobuki, Naoya Tokoo, Masakazu Sagawa
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Publication number: 20100013370Abstract: Provided is a plasma display device which is bright and has high contrast and high image quality. A plasma display device includes: a front substrate and a back substrate facing each other interposing a discharge gap; and a plurality of discharge cells formed by the front substrate and the back substrate, wherein a mixture gas containing Xe is filled in the discharge gap, and each of a plurality of phosphor layers of red, green, and blue is arranged in the discharge cell. And, the plasma display device performs a reset operation by, at least, a weak discharge. A crystal material is arranged in the phosphor layers of red, green, and blue so as to uniform weak discharge firing voltages for reset discharges in respective discharge cells.Type: ApplicationFiled: July 14, 2009Publication date: January 21, 2010Applicant: HITACHI CONSUMER ELECTRONICS CO., LTD.Inventors: Norihiro UEMURA, Shunichiro NOBUKI, Naoya TOKOO, Masakazu SAGAWA