Patents by Inventor Tetsuo Endo
Tetsuo Endo 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: 11621020Abstract: A magnetic recording medium includes a flexible and elongated substrate, a soft magnetic layer having an average thickness of 10 nm or more to 50 nm or less, and a recording layer. The soft magnetic layer is disposed between the substrate and the recording layer, and a difference in Young's modulus between the magnetic recording medium and the substrate in a longitudinal direction of the substrate is 2.4 GPa or more.Type: GrantFiled: April 6, 2018Date of Patent: April 4, 2023Assignee: SONY CORPORATIONInventors: Junichi Tachibana, Takashi Aizawa, Teruo Sai, Noboru Sekiguchi, Tetsuo Endo, Tomoe Ozaki, Ryoichi Hiratsuka
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Patent number: 11486292Abstract: An exhaust-gas purification system of an internal combustion engine includes an electrically heated catalytic device and a three-way catalytic device. The electrically heated catalytic device includes a first honeycomb base having a large number of honeycomb passages and a first catalyst component that is supported on, by a predetermined thin-film treatment, surfaces that define the honeycomb passages and that contains one or more types of noble metals. The three-way catalytic device includes a second honeycomb base having a large number of honeycomb passages and a second catalyst component that is supported on surfaces defining the honeycomb passages and that contains one or more types of noble metals. The total noble metal content per unit volume of the second honeycomb base is higher than the total noble metal content per unit volume of the first honeycomb base.Type: GrantFiled: March 5, 2021Date of Patent: November 1, 2022Assignee: HONDA MOTOR CO., LTD.Inventors: Yoshiaki Hatakeyama, Hiroki Takeori, Tetsuo Endo, Shun Kato
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Patent number: 11423936Abstract: There is provided a magnetic recording medium including a base; a seed layer; a foundation layer; and a recording layer, the seed layer being disposed between the base and the foundation layer, having an amorphous state, including an alloy containing Ti, Cr and O, a percentage of Ti being 30 atomic % to 100 atomic % based on a total amount of Ti and Cr contained in the seed layer, and a percentage of O being 15 atomic % or less based on a total amount of Ti, Cr and O contained in the seed layer. Also, a production method thereof is provided.Type: GrantFiled: May 9, 2014Date of Patent: August 23, 2022Assignee: Sony CorporationInventors: Junichi Tachibana, Jota Ito, Tomoe Ozaki, Ryoichi Hiratsuka, Noboru Sekiguchi, Tetsuo Endo
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Patent number: 11361790Abstract: A magnetic recording medium includes: a substrate; a recording layer; and a layer being provided between the substrate and the recording layer, the layer containing a superelastic body.Type: GrantFiled: December 14, 2016Date of Patent: June 14, 2022Assignee: Sony CorporationInventor: Tetsuo Endo
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Patent number: 11222665Abstract: A servo writer includes a writing head that writes a servo signal on a long magnetic tape that is traveling and at least two first guide rollers that guide the travel of the magnetic tape, in which the at least two first guide rollers on which a spiral groove is provided have a circumferential surface that has contact with the traveling magnetic tape, tensile forces act on the magnetic tape from the at least two first guide rollers in a width direction of the traveling magnetic tape, and the tensile forces that act on the magnetic tape from the at least two first guide rollers cancel each other.Type: GrantFiled: November 9, 2018Date of Patent: January 11, 2022Assignee: Sony CorporationInventor: Tetsuo Endo
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Publication number: 20210285358Abstract: An exhaust-gas purification system of an internal combustion engine includes an electrically heated catalytic device and a three-way catalytic device. The electrically heated catalytic device includes a first honeycomb base having a large number of honeycomb passages and a first catalyst component that is supported on, by a predetermined thin-film treatment, surfaces that define the honeycomb passages and that contains one or more types of noble metals. The three-way catalytic device includes a second honeycomb base having a large number of honeycomb passages and a second catalyst component that is supported on surfaces defining the honeycomb passages and that contains one or more types of noble metals. The total noble metal content per unit volume of the second honeycomb base is higher than the total noble metal content per unit volume of the first honeycomb base.Type: ApplicationFiled: March 5, 2021Publication date: September 16, 2021Applicant: HONDA MOTOR CO., LTD.Inventors: Yoshiaki Hatakeyama, Hiroki Takeori, Tetsuo Endo, Shun Kato
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Patent number: 11121310Abstract: A structure used in the formation of a spintronics element, the spintronics element to include a plurality of laminated layers, includes a substrate, a plurality of laminated layers formed on the substrate, an uppermost layer of the plurality of laminated layers being a non-magnetic layer containing oxygen, and a protection layer directly formed on the uppermost layer, the protection layer preventing alteration of characteristics of the uppermost layer while exposed in an atmosphere including H2O, a partial pressure of H2O in the atmosphere being equal to or larger than 10?4 Pa, no other layer being directly formed on the protection layer.Type: GrantFiled: July 16, 2019Date of Patent: September 14, 2021Assignee: TOHOKU UNIVERSITYInventors: Soshi Sato, Masaaki Niwa, Hiroaki Honjo, Shoji Ikeda, Hideo Ohno, Tetsuo Endo
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Patent number: 11011205Abstract: A servo writer includes a writing head that writes a servo signal on a long magnetic tape that is traveling, a guide roller that is provided on an upstream side of a travel path with respect to the writing head and guides the traveling magnetic tape, and a polishing unit that is provided on an upstream side of the travel path with respect to the guide roller and polishes at least one edge of the traveling magnetic tape, in which the guide roller includes a flange that regulates the travel of the magnetic tape.Type: GrantFiled: November 9, 2018Date of Patent: May 18, 2021Assignee: Sony CorporationInventor: Tetsuo Endo
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Publication number: 20210043224Abstract: A servo writer includes a writing head that writes a servo signal on a long magnetic tape that is traveling, a guide roller that is provided on an upstream side of a travel path with respect to the writing head and guides the traveling magnetic tape, and a polishing unit that is provided on an upstream side of the travel path with respect to the guide roller and polishes at least one edge of the traveling magnetic tape, in which the guide roller includes a flange that regulates the travel of the magnetic tape.Type: ApplicationFiled: November 9, 2018Publication date: February 11, 2021Inventor: Tetsuo ENDO
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Publication number: 20200365184Abstract: A servo writer includes a writing head that writes a servo signal on a long magnetic tape that is traveling and at least two first guide rollers that guide the travel of the magnetic tape, in which the at least two first guide rollers on which a spiral groove is provided have a circumferential surface that has contact with the traveling magnetic tape, tensile forces act on the magnetic tape from the at least two first guide rollers in a width direction of the traveling magnetic tape, and the tensile forces that act on the magnetic tape from the at least two first guide rollers cancel each other.Type: ApplicationFiled: November 9, 2018Publication date: November 19, 2020Inventor: Tetsuo ENDO
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Patent number: 10789979Abstract: A magnetic recording medium includes: an elongated substrate having flexibility; a first layer, being provided on the substrate, containing Cr, Ni, and Fe, and having a face-centered cubic lattice structure with a (111) plane preferentially oriented so as to be parallel to a surface of the substrate; a second layer, being provided on the first layer, containing Co and O, having a ratio of an average atomic concentration of O to an average atomic concentration of Co of 1 or more, and having a column structure with an average particle diameter of 3 nm or more and 13 nm or less; a third layer, being provided on the second layer, and containing Ru; and a perpendicular recording layer, being provided on the third layer.Type: GrantFiled: November 16, 2016Date of Patent: September 29, 2020Assignee: Sony CorporationInventors: Junichi Tachibana, Tetsuo Endo, Tomoe Ozaki, Takashi Aizawa
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Publication number: 20200075051Abstract: A magnetic recording medium includes: a flexible and elongated substrate; a soft magnetic layer having an average thickness of 10 nm or more to 50 nm or less; and a recording layer, in which the soft magnetic layer is disposed between the substrate and the recording layer, and a difference in Young's modulus between the magnetic recording medium and the substrate in a longitudinal direction of the substrate is 2.4 GPa or more.Type: ApplicationFiled: April 6, 2018Publication date: March 5, 2020Inventors: JUNICHI TACHIBANA, TAKASHI AIZAWA, TERUO SAI, NOBORU SEKIGUCHI, TETSUO ENDO, TOMOE OZAKI, RYOICHI HIRATSUKA
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Patent number: 10580447Abstract: A magnetic recording medium has a recording surface having an average surface roughness SRa of 3.0 nm or less, the number of projections having a height of 7.5 nm or more included in a unit region (where the unit region is a square region with each side having a length of 30 ?m) of the recording surface is 256 or more, and the number of projections having a height of 15 nm or more included in the unit region of the recording surface is 0 or more and 104 or less.Type: GrantFiled: May 12, 2016Date of Patent: March 3, 2020Assignee: Sony CorporationInventors: Noboru Sekiguchi, Tomoe Ozaki, Tetsuo Endo, Takashi Aizawa, Junichi Tachibana, Hikaru Terui, Teruo Sai
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Patent number: 10529367Abstract: A magnetic recording medium includes a long-shaped base substrate having flexibility, a soft magnetic layer, and a magnetic recording layer. A squareness ratio in a longitudinal direction of the base substrate is equal to or less than a squareness ratio in a short-side direction of the base substrate. The squareness ratio in the longitudinal direction of the base substrate is 30% or less.Type: GrantFiled: November 16, 2015Date of Patent: January 7, 2020Assignee: Sony CorporationInventors: Junichi Tachibana, Tetsuo Endo, Tomoe Ozaki, Hikaru Terui
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Publication number: 20190363245Abstract: A structure used in the formation of a spintronics element, the spintronics element to include a plurality of laminated layers, includes a substrate, a plurality of laminated layers formed on the substrate, an uppermost layer of the plurality of laminated layers being a non-magnetic layer containing oxygen, and a protection layer directly formed on the uppermost layer, the protection layer preventing alteration of characteristics of the uppermost layer while exposed in an atmosphere including H2O, a partial pressure of H2O in the atmosphere being equal to or larger than 10?4 Pa, no other layer being directly formed on the protection layer.Type: ApplicationFiled: July 16, 2019Publication date: November 28, 2019Applicant: TOHOKU UNIVERSITYInventors: Soshi SATO, Masaaki NIWA, Hiroaki HONJO, Shoji IKEDA, Hideo OHNO, Tetsuo ENDO
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Patent number: 10396274Abstract: A method of manufacturing a spintronics element from laminated layers. The method includes (a) forming a plurality of laminated layers in manufacturing equipment, (b) forming a wafer in the manufacturing equipment, including applying a protection layer directly on a non-magnetic uppermost layer of the laminated layers so that the protection layer prevents alteration of characteristics of the uppermost layer, and (c) exposing the wafer, outside of the manufacturing equipment, to an atmosphere that includes H2O having a partial pressure in the atmosphere equal to or larger than 10?4 Pa.Type: GrantFiled: March 8, 2016Date of Patent: August 27, 2019Assignee: TOHOKU UNIVERSITYInventors: Soshi Sato, Masaaki Niwa, Hiroaki Honjo, Shoji Ikeda, Hideo Ohno, Tetsuo Endo
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Publication number: 20190080712Abstract: A magnetic recording medium includes: an elongated substrate having flexibility; a first layer, being provided on the substrate, containing Cr, Ni, and Fe, and having a face-centered cubic lattice structure with a (111) plane preferentially oriented so as to be parallel to a surface of the substrate; a second layer, being provided on the first layer, containing Co and O, having a ratio of an average atomic concentration of O to an average atomic concentration of Co of 1 or more, and having a column structure with an average particle diameter of 3 nm or more and 13 nm or less; a third layer, being provided on the second layer, and containing Ru; and a perpendicular recording layer, being provided on the third layer.Type: ApplicationFiled: November 16, 2016Publication date: March 14, 2019Inventors: Junichi TACHIBANA, Tetsuo ENDO, Tomoe OZAKI, Takashi AIZAWA
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Publication number: 20190035424Abstract: A magnetic recording medium includes: a substrate; a recording layer; and a layer being provided between the substrate and the recording layer, the layer containing a superelastic body.Type: ApplicationFiled: December 14, 2016Publication date: January 31, 2019Inventor: Tetsuo ENDO
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Publication number: 20180137887Abstract: A magnetic recording medium has a recording surface having an average surface roughness SRa of 3.0 ?m or less, the number of projections having a height of 7.5 nm or more included in a unit region (where the unit region is a square region with each side having a length of 30 ?m) of the recording surface is 256 or more, and the number of projections having a height of 15 nm or more included in the unit region of the recording surface is 0 or more and 104 or less.Type: ApplicationFiled: May 12, 2016Publication date: May 17, 2018Inventors: Noboru Sekiguchi, Tomoe Ozaki, Tetsuo Endo, Takashi Aizawa, Junichi Tachibana, Hikaru Terui, Teruo Sai
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Publication number: 20170263854Abstract: A method of manufacturing a spintronics element from laminated layers. The method includes (a) forming a plurality of laminated layers in manufacturing equipment, (b) forming a wafer in the manufacturing equipment, including applying a protection layer directly on a non-magnetic uppermost layer of the laminated layers so that the protection layer prevents alteration of characteristics of the uppermost layer, and (c) exposing the wafer, outside of the manufacturing equipment, to an atmosphere that includes H2O having a partial pressure in the atmosphere equal to or larger than 10?4 Pa.Type: ApplicationFiled: March 8, 2016Publication date: September 14, 2017Applicant: TOHOKU UNIVERSITYInventors: Soshi SATO, Masaaki NIWA, Hiroaki HONJO, Shoji IKEDA, Hideo OHNO, Tetsuo ENDO