Patents by Inventor Tatsuya Nagai
Tatsuya Nagai 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: 12100970Abstract: A magnetic coupling coefficient between a power reception coil and a communication antenna is 0.3 or less. A power management circuit suppresses electromagnetic interference between the power reception coil and the communication antenna in a predetermined time period by causing a rectification stopping circuit to operate to keep the rectification stopping circuit in an operation state in the predetermined time period with a received power voltage exceeding a first threshold value and by changing a resonant frequency of a power reception resonant circuit to a frequency different from a frequency being used in a wireless communication circuit to keep the resonant frequency in a changed state.Type: GrantFiled: April 26, 2023Date of Patent: September 24, 2024Assignee: Murata Manufacturing Co., Ltd.Inventors: Koyo Kaiwa, Tatsuya Hosotani, Takahiro Nagai
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Patent number: 12086731Abstract: In order to assist participants in thinking of an idea by acquiring audio data, it is provided a workshop assistance system, which includes a computer having an arithmetic apparatus configured to execute predetermined processing, a storage device coupled to the arithmetic apparatus, and a communication interface coupled to the arithmetic apparatus, the computer being configured to access solved problem case data including information of solved cases that correspond to problem data, the workshop assistance system comprising: a problem processing module configured to search, by the arithmetic apparatus, solved cases based on problem data that is generated from a discussion among participants; and an idea generation module configured to present, by the arithmetic apparatus, idea data including the generated problem data and information of the solved case found in the search to the participants.Type: GrantFiled: January 31, 2019Date of Patent: September 10, 2024Assignee: Hitachi, Ltd.Inventors: Shuhei Furuya, Yo Takeuchi, Kiyoshi Kumagai, Toshiyuki Ono, Masao Ishiguro, Tatsuya Tokunaga, Chisa Nagai, Takashi Sumiyoshi, Naoyuki Kanda, Kenji Nagamatsu, Kenji Ohya
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Publication number: 20240295265Abstract: A work vehicle includes a hydrostatic continuously variable transmission to output power, an electric motor to perform shifting, a linkage mechanism to link a shifting shaft of the electric motor with a trunnion shaft of the hydrostatic continuously variable transmission the linkage mechanism, including a first linkage section linked with the shifting shaft, and a second linkage section linked with the trunnion shaft, and a biasing mechanism to press and bias a second gear of the second linkage section that meshes with a first gear of the first linkage section against the first gear such that a tooth flank of the second gear abuts with a tooth flank of the first gear in a rotation direction reverse to a rotation direction of the first gear.Type: ApplicationFiled: May 15, 2024Publication date: September 5, 2024Inventors: Hiroaki NAGAI, Daisuke NAKAYAMA, Hironobu NOGAMI, Ryo MASUDA, Keiji TAKAHASHI, Tatsuya SAKAI
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Publication number: 20240290971Abstract: A positive electrode composition containing carbon black, carbon nanotubes, an active material, and a binding material, in which the carbon black has a BET specific surface area of 100 to 400 m2/g and a crystallite size (Lc) of 15 to 26 ?, the carbon nanotubes have an average diameter of 5 to 15 nm, and a ratio (average diameter/BET specific surface area) of the average diameter with respect to a BET specific surface area of the carbon nanotubes is 0.01 to 0.068 nm/(m2/g).Type: ApplicationFiled: June 14, 2022Publication date: August 29, 2024Applicant: Denka Company LimitedInventors: Tatsuya NAGAI, Yuma KITAE, Tetsuya ITO
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Publication number: 20240250428Abstract: A ring-type device includes a wireless power receiver circuit, a radio communication circuit, and a ring-shaped structure. The wireless power receiver circuit includes a power receiver circuit, and a loop coil. The radio communication circuit operates with the loop coil serving as an antenna. The power receiver circuit and the radio communication circuit include an electronic component, and a flexible circuit board to which the electronic component is mounted. The ring-shaped structure has a lateral ring face, a top ring face, and a bottom ring face. The loop coil is disposed along the top ring face. The flexible circuit board is planar in structure in its developed condition, and is disposed in a curved configuration along the lateral ring face of the ring-shaped structure.Type: ApplicationFiled: February 26, 2024Publication date: July 25, 2024Applicant: Murata Manufacturing Co., Ltd.Inventors: Takahiro NAGAI, Tatsuya HOSOTANI
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Patent number: 12040850Abstract: A near-field communication device includes a communication antenna for near-field communication formed along a plane, an interface circuit connected to the communication antenna for making a signal of the near-field communication pass through the interface circuit, a wireless communication IC connected to the interface circuit for processing the signal of the near-field communication, a power reception coil arranged along the plane to surround the communication antenna, a resonant capacitor constituting, together with the power reception coil, a power reception resonant circuit, and a rectifying and smoothing circuit connected to the power reception resonant circuit. The power reception resonant circuit resonates at a frequency of the near-field communication, and magnetic flux generated in the vicinity of the power reception coil by a resonant current flowing through the power reception resonant circuit interlinks with the communication antenna.Type: GrantFiled: June 22, 2022Date of Patent: July 16, 2024Assignee: Murata Manufacturing Co., Ltd.Inventors: Tatsuya Hosotani, Takahiro Nagai
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Patent number: 12039387Abstract: An IC card communicates with a reader/writer, which is induction-type read/write communication equipment, in a contactless manner. A power supply control circuit detects presence or absence of power reception in accordance with an output voltage of a power receiving circuit, detects presence or absence of predetermined communication by using an electronic functional circuit, starts to charge an electrical energy storage device by using a charging circuit when there is not the predetermined communication immediately after power reception is detected, and supplies power from a voltage conversion circuit to the electronic functional circuit without starting to charge the electrical energy storage device by using the charging circuit when there is the predetermined communication immediately after power reception is detected.Type: GrantFiled: November 29, 2022Date of Patent: July 16, 2024Assignee: Murata Manufacturing Co., Ltd.Inventors: Takahiro Nagai, Tatsuya Hosotani
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Patent number: 11926195Abstract: A gap formed in a front portion of a door is easily and reliably filled so that occurrence of noise is reduced. A frame front side portion retaining a glass run front side portion being inserted is provided in a front portion of a window frame. A front side of an outer panel is provided with a mirror base to which a mirror base cover is attached. A rear edge of the mirror base is provided with a rear plate portion extending to a cabin inner side. A gap is formed between the frame front side portion and the rear plate portion. An outer sealing plate portion overlapping with a cabin outer side of the mirror base is provided with a gap filling portion extending downward.Type: GrantFiled: October 22, 2021Date of Patent: March 12, 2024Assignee: Nishikawa Rubber Co., Ltd.Inventors: Haruka Yanoshita, Masaki Motodera, Keizo Matsuoka, Shuhei Nitta, Tatsuya Nagai
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Publication number: 20240079598Abstract: Carbon black in which an oil absorption amount is 150 mL/100 g or more and 400 mL/100 g or less and an iron content that is measured by induced coupled plasma-mass spectrometry is 500 ppb or less.Type: ApplicationFiled: January 21, 2022Publication date: March 7, 2024Applicant: Denka Company LimitedInventors: Tetsuya ITO, Yusaku HARADA, Kosuke TANAKA, Tatsuya NAGAI
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Publication number: 20240076502Abstract: Carbon black in which an oil absorption amount is 150 mL/100 g or more and 400 mL/100 g or less and a nickel content that is measured by induced coupled plasma-mass spectrometry is 50 ppb or less.Type: ApplicationFiled: January 21, 2022Publication date: March 7, 2024Applicant: Denka Company LimitedInventors: Tetsuya ITO, Yusaku HARADA, Kosuke TANAKA, Tatsuya NAGAI
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Publication number: 20240076503Abstract: Carbon black in which an oil absorption amount is 150 mL/100 g or more and 400 mL/100 g or less and a cobalt content that is measured by induced coupled plasma-mass spectrometry is 20 ppb or less.Type: ApplicationFiled: January 21, 2022Publication date: March 7, 2024Applicant: Denka Company LimitedInventors: Tetsuya ITO, Yusaku HARADA, Kosuke TANAKA, Tatsuya NAGAI
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Patent number: 11658278Abstract: To provide a carbon black for batteries capable of readily obtaining a positive electrode for batteries having excellent adhesiveness, and excellent output characteristics and the cycle characteristics. A carbon black for batteries, the carbon black having a BET specific surface area measured according to JIS K6217-2 C method of 100 m2/g or larger, and a surface fluorine concentration X (unit: atom %) and a surface oxygen concentration Y (unit: atom %) measured by X-ray Photoelectron Spectroscopy (XPS) satisfying the following conditions (A) and (B), 0.3?X?4.0 and??(A) 0.1?Y?3.0.Type: GrantFiled: March 18, 2020Date of Patent: May 23, 2023Assignees: DENKA COMPANY LIMITED, CENTRAL GLASS COMPANY, LIMITEDInventors: Shinichiro Osumi, Tatsuya Nagai, Takako Arai, Tetsuya Ito, Hiroyuki Oomori, Shoi Suzuki, Akifumi Yao
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Patent number: 11637290Abstract: A slurry including at least a carbon black and a dispersion medium, wherein a concentration of the carbon black in the slurry is 5% by mass or more and 25% by mass or less, and wherein in a volume-based frequency distribution of particle size of the carbon black measured by a laser diffraction/scattering method, provided that a volume concentration of carbon black with a particle size of 0.6 ?m or more is x (%), a volume concentration of carbon black with a particle size of 0.3 ?m or more and less than 0.6 ?m is y (%), and a volume concentration of carbon black having a particle size of less than 0.3 ?m is 100?(x+y) (%), the slurry satisfies 10?x?70, 30?y?90, and 0?100?(x+y)?30.Type: GrantFiled: April 17, 2020Date of Patent: April 25, 2023Assignee: DENKA COMPANY LIMITEDInventors: Akira Yoda, Tatsuya Nagai, Tetsuya Ito
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Publication number: 20220200006Abstract: A slurry including at least a carbon black and a dispersion medium, wherein a concentration of the carbon black in the slurry is 5% by mass or more and 25% by mass or less, and wherein in a volume-based frequency distribution of particle size of the carbon black measured by a laser diffraction/scattering method, provided that a volume concentration of carbon black with a particle size of 0.6 ?m or more is x (%), a volume concentration of carbon black with a particle size of 0.3 ?m or more and less than 0.6 ?m is y (%), and a volume concentration of carbon black having a particle size of less than 0.3 ?m is 100?(x+y) (%), the slurry satisfies 10?x?70, 30?y?90, and 0?100?(x+y)?30.Type: ApplicationFiled: April 17, 2020Publication date: June 23, 2022Inventors: Akira YODA, Tatsuya NAGAI, Tetsuya ITO
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Publication number: 20220126662Abstract: A gap formed in a front portion of a door is easily and reliably filled so that occurrence of noise is reduced. A frame front side portion retaining a glass run front side portion being inserted is provided in a front portion of a window frame. A front side of an outer panel is provided with a mirror base to which a mirror base cover is attached. A rear edge of the mirror base is provided with a rear plate portion extending to a cabin inner side. A gap is formed between the frame front side portion and the rear plate portion. An outer sealing plate portion overlapping with a cabin outer side of the mirror base is provided with a gap filling portion extending downward.Type: ApplicationFiled: October 22, 2021Publication date: April 28, 2022Inventors: Haruka YANOSHITA, Masaki Motodera, Keizo Matsuoka, Shuhei Nitta, Tatsuya Nagai
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Patent number: 11264616Abstract: Provided is a conductive composition for electrodes, the conductive composition having excellent electrical conductivity and dispersibility. Also provided are: a positive electrode for non-aqueous batteries, the positive electrode using the conductive composition and having low electrode plate resistance and excellent binding properties; and a non-aqueous battery having high energy density, high output characteristics, and high cycle characteristics. The conductive composition for electrodes contains a conductive material, an active material, a binder, and a dispersant, wherein the conductive material contains carbon black and a multi-walled carbon nanotube having a powder resistivity of 0.035 ?·cm or less as measured under a load of 9.8 MPa, and a median volumetric diameter D50 value, which is as a measure of dispersibility, in the range of 0.Type: GrantFiled: July 3, 2017Date of Patent: March 1, 2022Assignee: Denka Company LimitedInventors: Tatsuya Nagai, Yoko Horikoshi, Hitoshi Kaneko, Hiroshi Yokota
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Patent number: 11254198Abstract: If a sealing member is mounted to a planar sealing member-mount extending from a window frame toward outside of the cabin, separation of a terminal portion of the sealing member from the window frame is to be reduced. A fixing member made of a hard material is provided on a terminal portion of the sealing member in a front-rear direction of a vehicle. The fixing member has a body portion, an engagement portion, and a fixing target portion. The body portion is fixed to the terminal portion of the sealing member. The engagement portion holds the planar sealing member-mount in a thickness direction. The fixing target portion is fixed to a portion of the window frame remote from the planar sealing member-mount in the front-rear direction of the vehicle.Type: GrantFiled: October 19, 2019Date of Patent: February 22, 2022Assignees: Nishikawa Rubber Co., Ltd., MAZDA MOTOR CORPORATIONInventors: Kazuyuki Takeda, Tatsuya Nagai, Manabu Ikegami, Masahiro Nakashige
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Publication number: 20220013777Abstract: A composition for a positive electrode of a lithium ion secondary battery, the composition comprising: an active material capable of storing and extracting lithium ion; and an electric conductive material, wherein the active material is lithium iron phosphate, wherein the conductive material includes carbon black and carbon nanotube, wherein the carbon black has an average primary particle diameter of 39 nm or less, and wherein the carbon nanotube has an average diameter of 20 nm or less.Type: ApplicationFiled: November 28, 2019Publication date: January 13, 2022Applicant: Denka Company LimitedInventors: Tatsuya NAGAI, Shinichiro OSUMI, Tetsuya ITO
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Patent number: 11098201Abstract: An object of the present invention is to provide a carbon black for batteries having excellent dispersibility, electron conductivity and oxidation resistance. In addition, an object of the present invention is to provide a low-viscosity conductive composition for an electrode produced using the carbon black, and a low-resistance battery electrode and a battery having excellent high-output characteristics and cycle characteristics produced using the conductive composition. A carbon black for batteries having: BET specific surface area of 50 to 220 m2/g; a crystallite diameter (La) of 30 to 42 ?; and a number of CO2 desorption molecules per unit surface area measured by a temperature-rising desorption gas analysis method (50° C. to 1200° C. of measurement temperature) of 8.0×1016 to 15.0×1016 molecules/m2 is excellent in dispersibility, electron conductivity and oxidation resistance.Type: GrantFiled: August 8, 2017Date of Patent: August 24, 2021Assignee: DENKA COMPANY LIMITEDInventors: Tatsuya Nagai, Shinichiro Osumi, Daiki Ikeda, Tetsuya Ito, Hiroshi Yokota
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Patent number: 11028209Abstract: [Problem] To provide a conductive resin composition for electrodes which is excellent in dispersibility and oxidation resistance. To provide: an electrode composition employing the conductive resin composition for electrodes and having a low viscosity; an electrode employing the electrode composition and having a low electrode plate resistance; and a lithium ion battery having a high energy density, high output characteristics and a high cyclability.Type: GrantFiled: July 14, 2017Date of Patent: June 8, 2021Assignee: Denka Company LimitedInventors: Tatsuya Nagai, Takuya Narutomi, Tetsuya Ito, Hiroshi Yokota