Patents by Inventor Yuji Nakagawa
Yuji Nakagawa 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: 11631423Abstract: According to one embodiment, a magnetic recording device includes a magnetic head and a controller. The magnetic head includes a first magnetic pole, a magnetic element including a first magnetic layer, and a coil. The controller is electrically connected to the magnetic element and the coil. The controller is configured to supply a recording current to the coil and supply an element current to the magnetic element. The recording current includes a first period of a first polarity, a second period of a second polarity, a third period that shifts from the first to second period, and a fourth period that shifts from the second to first period. The element current includes DC and AC components. The AC component in the first period is the same as the AC component in the second period, the AC component in the third period, and the AC component in the fourth period.Type: GrantFiled: January 28, 2022Date of Patent: April 18, 2023Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventors: Yuji Nakagawa, Naoyuki Narita, Masayuki Takagishi, Tazumi Nagasawa, Tomoyuki Maeda
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Patent number: 11615808Abstract: According to one embodiment, a magnetic head includes first and second magnetic poles, and a stacked body provided between the first and second magnetic poles. The stacked body includes a first magnetic layer, a second magnetic layer provided between the second magnetic pole and the first magnetic layer, a third magnetic layer provided between the second magnetic pole and the second magnetic layer, a first non-magnetic layer provided between the first magnetic layer and the first magnetic pole, a second non-magnetic layer provided between the second and first magnetic layers, a third non-magnetic layer provided between the third and second magnetic layers, and a fourth non-magnetic layer provided between the second magnetic pole and the third magnetic layer. A thickness of the first magnetic layer is thicker than a thickness of the second magnetic layer. A thickness of the third magnetic layer is thicker than the second layer thickness.Type: GrantFiled: August 9, 2021Date of Patent: March 28, 2023Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventors: Yuji Nakagawa, Naoyuki Narita, Masayuki Takagishi, Tomoyuki Maeda, Tazumi Nagasawa, Hirofumi Suto
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Publication number: 20230062839Abstract: According to one embodiment, a magnetic head includes a magnetic pole, a shield, and a non-magnetic layer. The non-magnetic layer is provided between the magnetic pole and the shield. The non-magnetic layer is in contact with the magnetic pole and the shield. The non-magnetic layer includes a first element including at least one selected from the group consisting of Cu, Au, Cr, V, Al and Ag.Type: ApplicationFiled: January 27, 2022Publication date: March 2, 2023Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventors: Yuji NAKAGAWA, Masayuki TAKAGISHI, Naoyuki NARITA, Tazumi NAGASAWA, Tomoyuki MAEDA
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Publication number: 20230046928Abstract: According to one embodiment, a magnetic head includes first and second magnetic poles, and a stacked body provided between the first and second magnetic poles. The stacked body includes a first magnetic layer, a second magnetic layer provided between the second magnetic pole and the first magnetic layer, a third magnetic layer provided between the second magnetic pole and the second magnetic layer, a fourth magnetic layer provided between the second magnetic pole and the third magnetic layer, a first non-magnetic layer provided between the first magnetic layer and the first magnetic pole, a second non-magnetic layer provided between the second and first magnetic layers, a third non-magnetic layer provided between the third and second magnetic layers, a fourth non-magnetic layer provided between the fourth magnetic layer and the third magnetic layer, and a fifth non-magnetic layer provided between the second magnetic pole and the fourth magnetic layer.Type: ApplicationFiled: November 1, 2022Publication date: February 16, 2023Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventors: Yuji NAKAGAWA, Naoyuki NARITA, Masayuki TAKAGISHI, Tomoyuki MAEDA, Tazumi NAGASAWA, Hirofumi SUTO
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Publication number: 20230045730Abstract: According to one embodiment, a magnetic recording device includes a magnetic head and a controller. The magnetic head includes a first magnetic pole, a magnetic element including a first magnetic layer, and a coil. The controller is electrically connected to the magnetic element and the coil. The controller is configured to supply a recording current to the coil and supply an element current to the magnetic element. The recording current includes a first period of a first polarity, a second period of a second polarity, a third period that shifts from the first to second period, and a fourth period that shifts from the second to first period. The element current includes DC and AC components. The AC component in the first period is the same as the AC component in the second period, the AC component in the third period, and the AC component in the fourth period.Type: ApplicationFiled: January 28, 2022Publication date: February 9, 2023Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventors: Yuji NAKAGAWA, Naoyuki NARITA, Masayuki TAKAGISHI, Tazumi NAGASAWA, Tomoyuki MAEDA
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Publication number: 20230031273Abstract: According to one embodiment, a magnetic head includes a first magnetic pole, a second magnetic pole, and a stacked body provided between the first and second magnetic poles. The stacked body includes a first magnetic layer, a second magnetic layer provided between the first magnetic layer and the second magnetic pole, a third magnetic layer provided between the second magnetic layer and the second magnetic pole, a first non-magnetic layer provided between the first and second magnetic layers, a second non-magnetic layer provided between the second and third magnetic layers, a third non-magnetic layer provided between the first magnetic pole and the first magnetic layer, and a fourth non-magnetic layer provided between the third magnetic layer and the second magnetic pole. A first magnetic pole length is shorter than a second magnetic pole length. A first magnetic layer length is longer than a second magnetic layer length.Type: ApplicationFiled: January 14, 2022Publication date: February 2, 2023Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventors: Yuji NAKAGAWA, Masayuki TAKAGISHI, Naoyuki NARITA, Tazumi NAGASAWA, Tomoyuki MAEDA
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Publication number: 20220399033Abstract: A magnetic head includes a first magnetic pole, a second magnetic pole, a magnetic element, and a magnetic member. The magnetic element is provided between the first and second magnetic poles, and includes a first magnetic layer. The magnetic member includes a first magnetic part. A second direction from the first magnetic part to the magnetic element crosses a first direction from the first to second magnetic pole. The first magnetic part includes a magnetic material including at least one of first to third materials. The first material includes at least one selected from the group consisting of Mn3Sn, Mn3Ge and Mn3Ga. The second material includes at least one selected from the group consisting of a cubic or tetragonal compound including Mn and Ni, a cubic alloy including ?-phase Mn, and a cubic alloy including Fe. The third material includes an antiferromagnet.Type: ApplicationFiled: January 28, 2022Publication date: December 15, 2022Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventors: Yuji NAKAGAWA, Naoyuki NARITA, Masayuki TAKAGISHI, Tomoyuki MAEDA, Tazumi NAGASAWA, Kenichiro YAMADA, Akira KIKITSU
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Patent number: 11521644Abstract: According to one embodiment, a magnetic head includes first and second magnetic poles, and a stacked body provided between the first and second magnetic poles. The stacked body includes a first magnetic layer, a second magnetic layer provided between the second magnetic pole and the first magnetic layer, a third magnetic layer provided between the second magnetic pole and the second magnetic layer, a fourth magnetic layer provided between the second magnetic pole and the third magnetic layer, a first non-magnetic layer provided between the first magnetic layer and the first magnetic pole, a second non-magnetic layer provided between the second and first magnetic layers, a third non-magnetic layer provided between the third and second magnetic layers, a fourth non-magnetic layer provided between the fourth magnetic layer and the third magnetic layer, and a fifth non-magnetic layer provided between the second magnetic pole and the fourth magnetic layer.Type: GrantFiled: August 9, 2021Date of Patent: December 6, 2022Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventors: Yuji Nakagawa, Naoyuki Narita, Masayuki Takagishi, Tomoyuki Maeda, Tazumi Nagasawa, Hirofumi Suto
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Publication number: 20220383898Abstract: According to one embodiment, a magnetic head includes first and second magnetic poles, and a stacked body provided between the first and second magnetic poles. The stacked body includes a first magnetic layer, a second magnetic layer provided between the first magnetic layer and the second magnetic pole, a first nonmagnetic layer provided between the first and second magnetic layers, a second nonmagnetic layer provided between the second magnetic layer and the second magnetic pole, and a third nonmagnetic layer provided between the first magnetic pole and the first magnetic layer. The first magnetic layer includes a first element including at least one of Fe, Co, or Ni. The second magnetic layer includes (Fe100-xCox)100-yEy. A second element E includes at least one selected from the group consisting of Cr, V, Mn, Yi, and Sc. The first magnetic layer does not include the second element.Type: ApplicationFiled: January 28, 2022Publication date: December 1, 2022Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventors: Yuji NAKAGAWA, Naoyuki NARITA, Masayuki TAKAGISHI, Tomoyuki MAEDA, Tazumi NAGASAWA
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Publication number: 20220270641Abstract: According to one embodiment, a magnetic head includes first and second magnetic poles, and a stacked body provided between the first and second magnetic poles. The stacked body includes a first magnetic layer, a second magnetic layer provided between the second magnetic pole and the first magnetic layer, a third magnetic layer provided between the second magnetic pole and the second magnetic layer, a fourth magnetic layer provided between the second magnetic pole and the third magnetic layer, a first non-magnetic layer provided between the first magnetic layer and the first magnetic pole, a second non-magnetic layer provided between the second and first magnetic layers, a third non-magnetic layer provided between the third and second magnetic layers, a fourth non-magnetic layer provided between the fourth magnetic layer and the third magnetic layer, and a fifth non-magnetic layer provided between the second magnetic pole and the fourth magnetic layer.Type: ApplicationFiled: August 9, 2021Publication date: August 25, 2022Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventors: Yuji NAKAGAWA, Naoyuki NARITA, Masayuki TAKAGISHI, Tomoyuki MAEDA, Tazumi NAGASAWA, Hirofumi SUTO
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Publication number: 20220270640Abstract: According to one embodiment, a magnetic head includes first and second magnetic poles, and a stacked body provided between the first and second magnetic poles. The stacked body includes a first magnetic layer, a second magnetic layer provided between the second magnetic pole and the first magnetic layer, a third magnetic layer provided between the second magnetic pole and the second magnetic layer, a first non-magnetic layer provided between the first magnetic layer and the first magnetic pole, a second non-magnetic layer provided between the second and first magnetic layers, a third non-magnetic layer provided between the third and second magnetic layers, and a fourth non-magnetic layer provided between the second magnetic pole and the third magnetic layer. A thickness of the first magnetic layer is thicker than a thickness of the second magnetic layer. A thickness of the third magnetic layer is thicker than the second layer thickness.Type: ApplicationFiled: August 9, 2021Publication date: August 25, 2022Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventors: Yuji NAKAGAWA, Naoyuki NARITA, Masayuki TAKAGISHI, Tomoyuki MAEDA, Tazumi NAGASAWA, Hirofumi SUTO
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Patent number: 11393493Abstract: According to one embodiment, a magnetic recording head includes a first magnetic pole, a second magnetic pole, and a stacked body provided between the first magnetic pole and the second magnetic pole. The stacked body includes a first magnetic layer, a second magnetic layer provided between the first magnetic layer and the second magnetic pole, a first non-magnetic layer provided between the first magnetic layer and the second magnetic layer, a second non-magnetic layer provided between the second magnetic layer and the second magnetic pole, and a third non-magnetic layer provided between the first magnetic pole and the first magnetic layer. The first magnetic layer includes a first element including at least one of Fe, Co, or Ni. The second magnetic layer includes the first element, and a second element including at least one selected from the group consisting of Cr, V, Mn, Ti, and Sc.Type: GrantFiled: August 10, 2021Date of Patent: July 19, 2022Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventors: Yuji Nakagawa, Naoyuki Narita, Masayuki Takagishi, Tomoyuki Maeda, Tazumi Nagasawa, Hitoshi Iwasaki, Hirofumi Suto
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Publication number: 20220033765Abstract: An object of the present invention is to provide a means capable of stably storing an extracellular vesicle. The present invention relates to a storage stabilizer for an extracellular vesicle, which contains a copolymer containing a monomer unit derived from vinylpyrrolidone and a monomer unit derived from vinyl acetate, or a polymer having a monomer unit derived from vinylpyrrolidone such as polyvinylpyrrolidone and relates to a storage stabilization method for an extracellular vesicle, which includes cryopreserving an extracellular vesicle in the presence of the polymer.Type: ApplicationFiled: October 18, 2021Publication date: February 3, 2022Applicant: FUJIFILM Wako Pure Chemical CorporationInventors: Masayuki YAMANE, Naoko IMAWAKA, Yuji NAKAGAWA, Kodai SASAMOTO
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Publication number: 20200302502Abstract: A commodity information inspection system includes: a storage unit; an identification information specification unit; an image information acquisition unit configured to acquire image information related to the commodity label; a first extraction unit configured to extract, as text information from the storage unit, a predetermined commodity item to be a comparison target in the commodity information that is stored in association with the identification information that is specified by the identification information specification unit; a second extraction unit configured to extract, as text information, information of characters included in the image information acquired by the image information acquisition unit; and a determination unit configured to determine whether the commodity label and/or the wrapping material is correct based on a comparison between a character string as text information extracted by the first extraction unit and a character string as text information extracted by the second extractioType: ApplicationFiled: March 17, 2020Publication date: September 24, 2020Applicant: Ishida Co., Ltd.Inventors: Shun SATO, Yuji NAKAGAWA
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Publication number: 20190095875Abstract: Provided is a device management system to suppress decreases in producibility. A device management system manages a plurality of production-line-configuring devices configuring a production line to produce products, and has a device state data storage part, an analysis part, and a server output part. The production-line-configuring devices include a combination weighing machine to weigh the products, a bag-making and packaging machine to package the products, and a boxing device to box the packaged products into boxes. The device state data storage part accumulates device state data, which is information pertaining to the components included in the production-line-configuring devices. The analysis part performs an analysis process to analyze the device state data accumulated in the device state data storage part. The server output part outputs maintenance information, which pertains to maintenance of the components, on the basis of the results of the analysis process.Type: ApplicationFiled: March 8, 2017Publication date: March 28, 2019Inventors: Shinji KOIKE, Norio KAWANISHI, Yuji NAKAGAWA, Takafumi OHTANI, Ryoichi SATO, Ryo SASAKI, Yuchuan TONG
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Publication number: 20180285995Abstract: The present invention provides an information processing device and the like capable of facilitating confirmation of a claim structure even when the number of claims is large. The information processing device includes subordinate relationship extraction means for extracting a claim number and a subordinate relationship between claims from claim data including a plurality of claims; and relationship diagram generation means for generating, based on the subordinate relationship between claims, a relationship diagram in which the claim number is disposed on or in a periphery of circularly-arranged points or a circling line.Type: ApplicationFiled: September 23, 2016Publication date: October 4, 2018Applicant: NEC Patent Service,Ltd.Inventors: Tomohisa GOTOH, Yukiko MORIOKA, Hirotaka HOKKYO, Mikio ODA, Yuji NAKAGAWA
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Patent number: 9833329Abstract: An implant assembly smoothly causes a folded implant to indwell a living body, and which can smoothly expand the implant without causing the implant to be displaced from a predetermined indwelling position when a filling material is injected. The implant assembly has the implant that is configured to be transformable from a folded and contracted state to an expanded state by the introduced filling material, and in which at least a portion of a surface thereof is covered with a covering material m whose friction coefficient increases by coming into contact with a body fluid, and guiding means for preventing the implant and the body fluid of the living body from coming into contact with each other inside the living body, and for guiding the implant to move to the indwelling position inside the living body.Type: GrantFiled: October 2, 2015Date of Patent: December 5, 2017Assignee: TERUMO KABUSHIKI KAISHAInventors: Yuji Nakagawa, Suguru Hata
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Publication number: 20160022427Abstract: An implant assembly smoothly causes a folded implant to indwell a living body, and which can smoothly expand the implant without causing the implant to be displaced from a predetermined indwelling position when a filling material is injected. The implant assembly has the implant that is configured to be transformable from a folded and contracted state to an expanded state by the introduced filling material, and in which at least a portion of a surface thereof is covered with a covering material m whose friction coefficient increases by coming into contact with a body fluid, and guiding means for preventing the implant and the body fluid of the living body from coming into contact with each other inside the living body, and for guiding the implant to move to the indwelling position inside the living body.Type: ApplicationFiled: October 2, 2015Publication date: January 28, 2016Applicant: TERUMO KABUSHIKI KAISHAInventors: Yuji NAKAGAWA, Suguru HATA
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Patent number: 9188319Abstract: A lighting device includes: a device main body; an LED unit which is mounted on a bottom surface of the device main body and which includes a plurality of LEDs which are mounted on a plurality of LED circuit boards; an optical member which is mounted on the device main body on a front side of the LED unit; and an LED circuit board pressing spring which supports the LED circuit boards in the device main body.Type: GrantFiled: May 31, 2012Date of Patent: November 17, 2015Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yuji Nakagawa, Tomohiro Ikawa
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Patent number: 9186260Abstract: An implant configured to be placed in a living body to be expansively deformed and contractively deformed comprises a first layer that forms a filling unit that is configured to be filled with a filling material to maintain an expanded state of the implant, the first layer comprising a porous membrane; a second layer that covers the first layer, the second layer comprising at least one of (i) a fluid-impermeable membrane, and (ii) a gas-permeable porous membrane that is impermeable by liquids or gels; and an introduction port that communicates with the filling unit and is configured to introduce the filling material into the filling unit. An introduction region is formed between the first layer and the second layer, the introduction region being configured to receive a fluid permeating the first layer when the filling material is introduced into the filling unit.Type: GrantFiled: March 19, 2014Date of Patent: November 17, 2015Assignee: Terumo Kabushiki KaishaInventors: Yasuyuki Honma, Yuji Nakagawa