Patents by Inventor Hiroto Kikuchi
Hiroto Kikuchi 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: 20220364945Abstract: Provided is a pressure sensor apparatus, including: a pressure sensor unit; a case configured to house the pressure sensor unit; and a plurality of lead terminals configured to be exposed toward outside of of the case, wherein the plurality of lead terminals include a first terminal, a second terminal, and a ground terminal; and the ground terminal, the first terminal and the second terminal are arranged in an order of the ground terminal, the first terminal, and the second terminal outside the case. The pressure sensor apparatus includes a capacitor for a second terminal arranged across the ground terminal and the second terminal in between in interior of the case.Type: ApplicationFiled: April 26, 2022Publication date: November 17, 2022Inventors: Hiroto KIKUCHI, Kazuhiro MATSUNAMI, Kimihiro ASHINO
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Publication number: 20210300122Abstract: A tire includes a pair of shoulder main grooves and one or more center main grooves extending in a tire circumferential direction and four or more rows of land portions defined by the pair of shoulder main grooves and the one or more center main grooves. Each of the pair of shoulder main grooves includes a groove opening portion having a wave-like shape with an amplitude in a tire width direction. Each of the pair of shoulder main grooves includes a groove bottom portion having a zigzag shape with an amplitude in the tire width direction. The groove opening portion in each of the pair of shoulder main grooves has an amplitude A1_sh having a relationship A1_sh<A2_sh with respect to an amplitude A2_sh of the groove bottom portion.Type: ApplicationFiled: March 19, 2021Publication date: September 30, 2021Inventors: Takahide Ishizaka, Hiroto Kikuchi
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Publication number: 20210300123Abstract: A tire includes a plurality of main grooves extending in a tire circumferential direction and four or more rows of land portions defined by the main grooves. Moreover, a middle land portion and a center land portion have a plurality of through lug grooves that pass through the land portions in a tire width direction, respectively. Pitch lengths of the through lug grooves are in a range of from 7% or greater to 14% or less of a tire maximum ground contact length. Additionally, maximum groove depths of the through lug grooves are in a range of from 5% or greater to 65% or less of maximum groove depths of the main grooves.Type: ApplicationFiled: March 19, 2021Publication date: September 30, 2021Inventors: Hideki NAGASAWA, Hiroto KIKUCHI
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Patent number: 10566019Abstract: The purpose of the present invention is to provide a magnetic recording medium capable of reducing the surface roughness of the magnetic recording layer without adversely affecting the magnetic properties of the magnetic recording layer. The magnetic recording medium of the present invention includes a substrate, a seed layer on the substrate, and a magnetic recording layer on the seed layer, wherein the seed layer has a structure of: (a) a spinel structure consisting of Mg, Cr and O; (b) a spinel structure consisting of Zn, Fe and O; or (c) an inverse spinel structure consisting of Mg, Ti and O.Type: GrantFiled: June 1, 2017Date of Patent: February 18, 2020Assignee: Fuji Electric Co., Ltd.Inventors: Hiroyasu Kataoka, Hiroto Kikuchi, Akira Furuta, Hitoshi Nakata, Tomohiro Moriya, Takehito Shimatsu
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Publication number: 20190287563Abstract: In a perpendicular magnetic recording medium and a method of manufacturing the same, a first magnetic recording layer includes first magnetic crystal grains and a first non-magnetic portion containing carbon, a second magnetic recording layer includes second magnetic crystal grains and a second non-magnetic portion containing ZnO, a third magnetic recording layer includes third magnetic crystal grains and a third non-magnetic portion containing carbon, a film thickness t2 of the second magnetic recording layer is 0.1 nm to 7.0 nm, a volume fraction x2 of the second non-magnetic portion in the second magnetic recording layer at completion of formation is 0.20 to 0.90, a film thickness t3 of the third magnetic recording layer is 0.5 nm to 4.0 nm, a volume fraction x3 of the third non-magnetic portion in the third magnetic recording layer is 0.20 to 0.70, and (t2/t3)×(x2/x3) is 0.30 to 1.20.Type: ApplicationFiled: January 31, 2019Publication date: September 19, 2019Applicants: FUJI ELECTRIC CO., LTD., TOHOKU UNIVERSITYInventors: Hiroyasu KATAOKA, Hiroto KIKUCHI, Akira FURUTA, Takehito SHIMATSU
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Patent number: 10304485Abstract: The present invention aims at providing a magnetic recording medium capable of realizing lowering of recording temperature. A magnetic recording medium comprises a substrate, and a magnetic recording layer comprising a first magnetic layer and a second magnetic layer, in which the second magnetic layer comprises an FePtRh ordered alloy, and the first magnetic layer has Ku at room temperature larger than Ku of the second magnetic layer at room temperature.Type: GrantFiled: July 3, 2017Date of Patent: May 28, 2019Assignee: FUJI ELECTRIC CO., LTD.Inventors: Tsuyoshi Yoshizawa, Hiroto Kikuchi, Takehito Shimatsu
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Patent number: 10276200Abstract: The purpose of the invention is to provide a magnetic recording medium in which the surface roughness of the magnetic recording layer can be reduced without deterioration of the magnetic properties of the magnetic recording layer. The magnetic recording medium of the present invention includes a substrate, a seed layer on the substrate, and a magnetic recording layer on the seed layer, wherein the seed layer contains Mn, Cr, and O, and has a spinel structure.Type: GrantFiled: October 28, 2016Date of Patent: April 30, 2019Assignee: Fuji Electric Co., Ltd.Inventors: Tomohiro Moriya, Hitoshi Nakata, Hiroyasu Kataoka, Hiroto Kikuchi, Akira Furuta, Takehito Shimatsu
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Patent number: 10115424Abstract: The present invention provides a magnetic recording layer that has a high magnetic anisotropy constant Ku and a low Curie temperature Tc, as well as a magnetic recording medium that incorporates such a magnetic recording layer. The magnetic recording medium of the present invention includes a nonmagnetic substrate and a magnetic recording layer containing an ordered alloy. The ordered alloy may contain at least one element selected from the group consisting of Fe and Ni; at least one element selected from the group consisting of Pt, Pd, Au, Rh and Ir; and Ru.Type: GrantFiled: April 8, 2016Date of Patent: October 30, 2018Assignee: FUJI ELECTRIC CO., LTD.Inventors: Tomohiro Moriya, Hitoshi Nakata, Hiroto Kikuchi, Hiroyasu Kataoka, Akira Furuta, Takehito Shimatsu
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Patent number: 10062404Abstract: A method for manufacturing perpendicular magnetic recording medium which includes magnetic recording layer having desired film thickness while maintaining high magnetic anisotropy and having more homogenized magnetic characteristics. The method includes: (A) preparing non-magnetic substrate; (B) laminating magnetic recording layer on the substrate; and (C) heating the substrate on which the magnetic recording layer is laminated to a temperature of 400 to 600° C. The step (B) includes at least forming a first magnetic recording layer and a second magnetic layer thereon. The first layer has a granular structure including a first magnetic crystal grain constituted by an ordered alloy surrounded by a first non-magnetic grain boundary constituted by carbon, and the second layer has a granular structure including a second magnetic crystal grain constituted by an ordered alloy surrounded by a second non-magnetic grain boundary constituted by a non-magnetic material constituted by boron and carbon.Type: GrantFiled: May 12, 2015Date of Patent: August 28, 2018Assignee: Fuji Electric Co., Ltd.Inventors: Hiroyasu Kataoka, Hiroto Kikuchi, Akira Furuta, Takehito Shimatsu
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Patent number: 10006068Abstract: Disclosed herein is a pulverulent ceramide producing method that enables easily and efficiently extracting and separating ceramide from sugar beet pulp, and efficiently pulverizing the ceramide by spray drying. The pulverulent ceramide can be efficiently obtained by a process that includes concentrating, with and/or without adding water, a sugar beet pulp ethanol extract obtained by extraction of a sugar beet pulp (for example, such as a beet fiber) with ethanol, adding pectinase to the resulting concentrate and performing an enzymatic reaction, performing emulsification after inactivating the enzyme, and pulverizing the resulting emulsion using spray drying.Type: GrantFiled: July 29, 2014Date of Patent: June 26, 2018Assignees: Nippon Beet Sugar Manufacturing., Co., Ltd., T. HASEGAWA CO., LTD.Inventors: Keisuke Takahashi, Taizo Nagura, Hiroto Kikuchi, Teruhisa Ohashi, Natsumi Suzuki, Tadashi Yoshimoto, Tomohiro Hosogai
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Publication number: 20170301367Abstract: The present invention aims at providing a magnetic recording medium capable of realizing lowering of recording temperature. A magnetic recording medium comprises a substrate, and a magnetic recording layer comprising a first magnetic layer and a second magnetic layer, in which the second magnetic layer comprises an FePtRh ordered alloy, and the first magnetic layer has Ku at room temperature larger than Ku of the second magnetic layer at room temperature.Type: ApplicationFiled: July 3, 2017Publication date: October 19, 2017Inventors: Tsuyoshi Yoshizawa, Hiroto Kikuchi, Takehito Shimatsu
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Publication number: 20170301368Abstract: The present invention is a method for mass-production of a recording medium with the component composition thereof monotonically changing along the film thickness direction. In the method, the magnetic recording medium that includes at least a substrate, and first magnetic recording layer and second magnetic recording layer as the magnetic recording layer. The method includes: laminating a second magnetic layer of FePtRh on a first magnetic layer of FePt or FePtRh with heating. In the method, heat treatment may be preheat-treatment or postheat-treatment, when laminating the second magnetic layer of FePtRh onto the first magnetic layer of FePtRh, the concentration of Rh in the second magnetic layer is higher than that of the first magnetic layer.Type: ApplicationFiled: July 3, 2017Publication date: October 19, 2017Inventors: Hiroto Kikuchi, Takehito Shimatsu
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Publication number: 20170270955Abstract: The purpose of the present invention is to provide a magnetic recording medium capable of reducing the surface roughness of the magnetic recording layer without adversely affecting the magnetic properties of the magnetic recording layer. The magnetic recording medium of the present invention includes a substrate, a seed layer on the substrate, and a magnetic recording layer on the seed layer, wherein the seed layer has a structure of: (a) a spinel structure consisting of Mg, Cr and O; (b) a spinel structure consisting of Zn, Fe and O; or (c) an inverse spinel structure consisting of Mg, Ti and O.Type: ApplicationFiled: June 1, 2017Publication date: September 21, 2017Inventors: Hiroyasu Kataoka, Hiroto Kikuchi, Akira Furuta, Hitoshi Nakata, Tomohiro Moriya, Takehito Shimatsu
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Publication number: 20170206919Abstract: The purpose of the present invention is to provide a magnetic recording medium making secondary growth of magnetic crystal grains inhibited, having a magnetic recording layer having a large film thickness, and exhibiting excellent magnetic characteristics, and to provide a method for producing the medium. A magnetic recording medium according to the present invention includes a substrate and a magnetic recording layer that includes a lower layer and an upper layer, in which the lower layer and the upper layer include magnetic crystal grains formed of an ordered alloy and non-magnetic grain boundaries, the lower layer is formed by depositing Bi, C and an element constituting the ordered alloy, and the upper layer is formed by depositing C and an element constituting the ordered alloy. The present invention also provides a method for producing the above-described magnetic recording medium.Type: ApplicationFiled: March 31, 2017Publication date: July 20, 2017Inventors: Akira Furuta, Hiroto Kikuchi, Hiroyasu Kataoka, Takehito Shimatsu
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Patent number: 9672855Abstract: A perpendicular magnetic recording medium includes at least a nonmagnetic substrate and a magnetic recording layer. The magnetic recording layer is constituted by a plurality of layers that includes at least a first magnetic recording layer and a second magnetic recording layer. The first magnetic recording layer has a granular structure that includes first magnetic crystal grains and first nonmagnetic crystal grain boundaries surrounding the first magnetic crystal grains. The first magnetic crystal grains include an ordered alloy, and the first nonmagnetic crystal grain boundaries are constituted by carbon. The second magnetic recording layer has a granular structure that includes second magnetic crystal grains and a second nonmagnetic crystal grain boundaries that surround the second magnetic crystal grains. The second magnetic crystal grains include an ordered alloy, and the second nonmagnetic crystal grain boundaries are constituted by a carbon-containing nonmagnetic material.Type: GrantFiled: December 4, 2014Date of Patent: June 6, 2017Assignee: FUJI ELECTRIC CO., LTD.Inventors: Hiroyasu Kataoka, Hiroto Kikuchi, Akira Furuta, Shinji Uchida, Takehito Shimatsu
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Publication number: 20170125050Abstract: A method for manufacturing perpendicular magnetic recording medium which includes magnetic recording layer having desired film thickness while maintaining high magnetic anisotropy and having more homogenized magnetic characteristics. The method includes: (A) preparing non-magnetic substrate; (B) laminating magnetic recording layer on the substrate; and (C) heating the substrate on which the magnetic recording layer is laminated to a temperature of 400 to 600° C. The step (B) includes at least forming a first magnetic recording layer and a second magnetic layer thereon. The first layer has a granular structure including a first magnetic crystal grain constituted by an ordered alloy surrounded by a first non-magnetic grain boundary constituted by carbon, and the second layer has a granular structure including a second magnetic crystal grain constituted by an ordered alloy surrounded by a second non-magnetic grain boundary constituted by a non-magnetic material constituted by boron and carbon.Type: ApplicationFiled: May 12, 2015Publication date: May 4, 2017Inventors: Hiroyasu Kataoka, Hiroto Kikuchi, Akira Furuta, Takehito Shimatsu
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Publication number: 20170047090Abstract: The purpose of the invention is to provide a magnetic recording medium in which the surface roughness of the magnetic recording layer can be reduced without deterioration of the magnetic properties of the magnetic recording layer. The magnetic recording medium of the present invention includes a substrate, a seed layer on the substrate, and a magnetic recording layer on the seed layer, wherein the seed layer contains Mn, Cr, and O, and has a spinel structure.Type: ApplicationFiled: October 28, 2016Publication date: February 16, 2017Inventors: Tomohiro Moriya, Hitoshi Nakata, Hiroyasu Kataoka, Hiroto Kikuchi, Akira Furuta, Takehito Shimatsu
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Publication number: 20160225394Abstract: The present invention provides a magnetic recording layer that has a high magnetic anisotropy constant Ku and a low Curie temperature Tc, as well as a magnetic recording medium that incorporates such a magnetic recording layer. The magnetic recording medium of the present invention includes a nonmagnetic substrate and a magnetic recording layer containing an ordered alloy. The ordered alloy may contain at least one element selected from the group consisting of Fe and Ni; at least one element selected from the group consisting of Pt, Pd, Au, Rh and Ir; and Ru.Type: ApplicationFiled: April 8, 2016Publication date: August 4, 2016Applicant: FUJI ELECTRIC CO., LTD.Inventors: Tomohiro MORIYA, Hitoshi NAKATA, Hiroto KIKUCHI, Hiroyasu KATAOKA, Akira FURUTA, Takehito SHIMATSU
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Publication number: 20160160248Abstract: Disclosed herein is a pulverulent ceramide producing method that enables easily and efficiently extracting and separating ceramide from sugar beet pulp, and efficiently pulverizing the ceramide by spray drying. The pulverulent ceramide can be efficiently obtained by a process that includes concentrating, with and/or without adding water, a sugar beet pulp ethanol extract obtained by extraction of a sugar beet pulp (for example, such as a beet fiber) with ethanol, adding pectinase to the resulting concentrate and performing an enzymatic reaction, performing emulsification after inactivating the enzyme, and pulverizing the resulting emulsion using spray drying.Type: ApplicationFiled: July 29, 2014Publication date: June 9, 2016Applicants: Nippon Beet Sugar Manufacturing., Co., LTD., T. HASEGAWA CO., LTD.Inventors: Keisuke TAKAHASHI, Taizo NAGURA, Hiroto KIKUCHI, Teruhisa OHASHI, Natsumi SUZUKI, Tadashi YOSHIMOTO, Tomohiro HOSOGAI
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Publication number: 20150132608Abstract: A perpendicular magnetic recording medium includes at least a nonmagnetic substrate and a magnetic recording layer. The magnetic recording layer is constituted by a plurality of layers that includes at least a first magnetic recording layer and a second magnetic recording layer. The first magnetic recording layer has a granular structure that includes first magnetic crystal grains and first nonmagnetic crystal grain boundaries surrounding the first magnetic crystal grains. The first magnetic crystal grains include an ordered alloy, and the first nonmagnetic crystal grain boundaries are constituted by carbon. The second magnetic recording layer has a granular structure that includes second magnetic crystal grains and a second nonmagnetic crystal grain boundaries that surround the second magnetic crystal grains. The second magnetic crystal grains include an ordered alloy, and the second nonmagnetic crystal grain boundaries are constituted by a carbon-containing nonmagnetic material.Type: ApplicationFiled: December 4, 2014Publication date: May 14, 2015Applicant: FUJI ELECTRIC CO., LTD.Inventors: Hiroyasu KATAOKA, Hiroto KIKUCHI, Akira FURUTA, Shinji UCHIDA, Takehito SHIMATSU