Patents by Inventor Naoki Maruyama

Naoki Maruyama 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).

  • Patent number: 10822672
    Abstract: A steel sheet according to an aspect of the present invention has predetermined chemical composition, in which a structure at a thickness ¼ portion includes, in terms of volume ratios, tempered martensite: 30% to 70% and one or both of ferrite and bainite: a total of 20% to 70%, in the structure at the thickness ¼ portion, a volume ratio of residual austenite is less than 10%, a volume ratio of fresh martensite is 10% or less, a volume ratio of pearlite is 10% or less, and a total volume ratio of the residual austenite, the fresh martensite, and the pearlite is 15% or less, a number density of iron-based carbides having a major axis of 5 nm or more in the tempered martensite at the thickness ¼ portion is 5×107 particles/mm2 or more, a ratio of the number of ?-type carbides in the number of the iron-based carbides having the major axis of 5 nm or more at the thickness ¼ portion is 20% or more, and a tensile strength is 780 MPa or higher.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: November 3, 2020
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Yuri Toda, Masafumi Azuma, Akihiro Uenishi, Hiroyuki Kawata, Naoki Maruyama, Genichi Shigesato
  • Patent number: 10822683
    Abstract: A hot-dip galvanized steel sheet includes a base steel sheet and a hot-dip galvanized layer formed on at least one surface of the base steel sheet, in which the hot-dip galvanized layer includes Fe in a content of more than 0% to 5% or less, Al in a content of more than 0% to 1.0% or less, and columnar grains formed by a ? phase on the surface of the steel sheet, further, 20% or more of the entire interface between the hot-dip galvanized layer and the base steel sheet is coated with the ? phase, and a ratio of an interface formed between ? grains in which coarse oxides are present among grains and the base steel sheet with respect to the entire interface between the ? phase and the base steel sheet in the hot-dip galvanized layer is 50% or less, the base steel sheet has predetermined chemical components and a refined layer in direct contact with the interface between the base steel sheet and the hot-dip galvanized layer, an average thickness of the refined layer is 0.1 to 5.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: November 3, 2020
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Hiroyuki Kawata, Takeshi Yasui, Kohei Ueda, Naoki Maruyama, Yuji Yamaguchi, Satoshi Uchida, Ryosuke Komami, Hayato Arai, Toyomitsu Nakamura
  • Patent number: 10822684
    Abstract: A hot-dip galvanized steel sheet includes a base steel sheet and a hot-dip galvanized layer formed on at least one surface of the base steel sheet, in which the hot-dip galvanized layer includes Fe in a content of more than 0% to 5% or less, Al in a content of more than 0% to 1.0% or less, and columnar grains formed by a ? phase on the surface of the steel sheet, further, 20% or more of the entire interface between the hot-dip galvanized layer and the base steel sheet is coated with the ? phase, and a ratio of an interface formed between ? grains in which coarse oxides are present among ? grains and the base steel sheet with respect to the entire interface between the ? phase and the base steel sheet in the hot-dip galvanized layer is 50% or less, the base steel sheet has predetermined chemical components and a refined layer in direct contact with the interface between the base steel sheet and the hot-dip galvanized layer, an average thickness of the refined layer is 0.1 to 5.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: November 3, 2020
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Hiroyuki Kawata, Takeshi Yasui, Kohei Ueda, Naoki Maruyama, Yuji Yamaguchi, Satoshi Uchida, Ryosuke Komami, Hayato Arai, Toyomitsu Nakamura
  • Patent number: 10811217
    Abstract: There is provided a crystal orientation figure creating device for use in a charged particle beam device for making a charged particle beam irradiated to a surface of a sample, the crystal orientation figure creating device being configured to create a crystal orientation figure, which is a figure representing a crystal coordinate system of a crystal at a position selected on the surface with respect to an incident direction of the charged particle beam, the crystal orientation figure creating device including: an orientation information acquiring unit configured to acquire crystal orientation information with respect to the incident direction at the selected position; an incident direction information acquiring unit configured to acquire information relating to an incident direction of the charged particle beam with respect to the sample; and a crystal orientation figure creating unit configured to create a crystal orientation figure in a changed incident direction at the selected position, based on the crys
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: October 20, 2020
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Takafumi Amino, Takashige Mori, Naoki Maruyama
  • Patent number: 10808291
    Abstract: A steel sheet according to an aspect of the present invention has predetermined chemical composition, in which a structure at a thickness ¼ portion includes, in terms of volume ratios, tempered martensite: 70% or more and one or both of ferrite and bainite: a total of less than 20%, in the structure at the thickness ¼ portion, a volume ratio of residual austenite is less than 10%, a volume ratio of fresh martensite is 10% or less, a volume ratio of pearlite is 10% or less, and a total volume ratio of the residual austenite, the fresh martensite, and the pearlite is 15% or less, a number density of iron-based carbides having a major axis of 5 nm or more in the tempered martensite at the thickness ¼ portion is 5×107 particles/mm2 or more, a ratio of the number of ?-type carbides in the number of the iron-based carbides having the major axis of 5 nm or more at the thickness ¼ portion is 20% or more, and a tensile strength is 780 MPa or higher.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: October 20, 2020
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Yuri Toda, Masafumi Azuma, Akihiro Uenishi, Hiroyuki Kawata, Naoki Maruyama, Genichi Shigesato
  • Patent number: 10811218
    Abstract: There is provided a tilting parameters calculating device for use in a charged particle beam device for making a charged particle beam irradiated to a surface of a sample mounted on a sample stage, the tilting parameters calculating device being configured to calculate tilting parameters, the tilting parameters being input parameters to control a tilting direction and a tilting value of the sample and/or the charged particle beam, the input parameters being necessary to change an incident direction of the charged particle beam with respect to the sample, the tilting parameters calculating device including a tilting parameters calculating unit for calculating the tilting parameters based on information that indicates the incident direction of the charged particle beam with respect to a crystal lying at a selected position on the surface in a state where the incident direction of the charged particle beam with respect to the sample is in a predetermined incident direction, the information being designated on a
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: October 20, 2020
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Takashige Mori, Takafumi Amino, Naoki Maruyama, Akira Taniyama, Shunsuke Taniguchi, Chie Yokoyama
  • Publication number: 20200325398
    Abstract: An epoxy resin, comprising an epoxy compound having a mesogenic structure, and having a value of ??2/??1 equal to 3 or less, wherein is an initial dynamic shear viscosity (Pa·s) and ??2 is a maximum value of dynamic shear viscosity (Pa·s), in a measurement of dynamic shear viscosity.
    Type: Application
    Filed: April 9, 2019
    Publication date: October 15, 2020
    Applicant: Hitachi Chemical Company, Ltd.
    Inventors: Tomoko HIGASHIUCHI, Naoki MARUYAMA, Kazumasa FUKUDA, Yoshitaka TAKEZAWA, Hideyuki KATAGI, Yuki NAKAMURA
  • Patent number: 10800872
    Abstract: An epoxy resin, comprising an epoxy compound having a mesogen structure, wherein, when performing a process of decreasing a temperature of the epoxy resin from 150° C. to 30° C. at a rate of 2° C./min, and a process of increasing the temperature of the epoxy resin from 30° C. to 150° C. at a rate of 2° C./min, in this order, the epoxy resin has a maximum value of ??2/??1 of 20 or less within a temperature range of from 30° C. to 150° C., wherein ??1 is a dynamic shear viscosity (Pa·s) measured in the process of decreasing the temperature, and ??2 is a dynamic shear viscosity (Pa·s) measured in the process of increasing the temperature, ??1 and ??2 being measured at the same temperature, and a value ??2 measured at 100° C. is 1000 Pa·s or less.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: October 13, 2020
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Naoki Maruyama, Tomoko Higashiuchi, Kazumasa Fukuda, Yuka Yoshida, Yoshitaka Takezawa
  • Patent number: 10786985
    Abstract: Provided is a printing method for forming ink dots on a printing medium by using a plurality of nozzle rows that discharge a plurality of types of photocurable inks. The printing method includes detecting a defective nozzle that has an ink discharge fault, and compensating for dot omission by causing, preceding the defective nozzle, a preceding nozzle that discharges an inducing ink different from a compensation target ink, which the defective nozzle should have discharged, to discharge the inducing ink to a position on the printing medium where dot omission occur due to the defective nozzle.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: September 29, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Yuki Nakazawa, Naoki Maruyama
  • Publication number: 20200296296
    Abstract: In order to provide a tilt control device capable of performing tilt control optimal at a high speed by controlling both a focus position and a tilt angle even when a scene changes such as in a case in which a subject changes, there is provided an imaging apparatus including a tilt control unit that performs tilt control by driving at least one of an imaging device and an imaging optical system, a focus lens driving unit that drives a focus lens, and a control unit that has a plurality of control modes for performing focus correction using at least one of the tilt control unit and the focus lens driving unit and selects one of the plurality of control modes in accordance with the number of subject areas displayed on an image screen.
    Type: Application
    Filed: March 6, 2020
    Publication date: September 17, 2020
    Inventors: Shunsuke Chino, Ryo Kawasaki, Natsuko Sato, Naoki Maruyama
  • Publication number: 20200270447
    Abstract: An epoxy resin, comprising an epoxy compound A that has at least two mesogenic structures and at least one phenylene group, and an epoxy compound B that has at least two mesogenic structures and at least one divalent biphenyl group.
    Type: Application
    Filed: September 29, 2017
    Publication date: August 27, 2020
    Applicant: Hitachi Chemical Company, Ltd.
    Inventors: Naoki MARUYAMA, Yuka YOSHIDA, Tomoko HIGASHIUCHI, Kazumasa FUKUDA, Keiichiro NISHIMURA, Yoshitaka TAKEZAWA
  • Publication number: 20200262969
    Abstract: An epoxy resin, comprising (1) an epoxy compound having two aromatic rings that form a divalent biphenyl structure and mesogenic structures that are bonded to the two aromatic rings, and at least one of the mesogenic structures being bonded to the aromatic ring at an angle with a molecular axis of the divalent biphenyl structure; (2) an epoxy compound having two aromatic rings that form a divalent biphenyl structure and mesogenic structures that are bonded to the two aromatic rings, and at least one of bonding sites of the aromatic ring to the mesogenic structure being at an ortho position or a meta position with respect to a carbon atom that bonds the aromatic rings; or (3) an epoxy compound having a phenylene group and two mesogenic structures that are bonded to the phenylene group at an angle with each other.
    Type: Application
    Filed: September 29, 2017
    Publication date: August 20, 2020
    Applicant: Hitachi Chemical Company, Ltd.
    Inventors: Tomoko HIGASHIUCHI, Naoki MARUYAMA, Yuka YOSHIDA, Kazumasa FUKUDA, Yoshitaka TAKEZAWA
  • Patent number: 10744760
    Abstract: An image processing apparatus configured to generate, based on image data corresponding to a printing image, print data for causing a printer to execute printing includes an input unit (input device, display device) configured to receive, for each of the first ink and the second ink, an ink discharge correction volume for correcting an ink volume discharged from predetermined nozzles among a plurality of first nozzles and a plurality of second nozzles, and a print data generating unit (printer driver) configured to generate the print data based on the image data and the ink discharge correction volume input.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: August 18, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Shun Sakaihara, Naoki Maruyama
  • Publication number: 20200247943
    Abstract: An epoxy resin, comprising an epoxy compound having at least two mesogenic structures and at least one divalent biphenyl group.
    Type: Application
    Filed: September 29, 2017
    Publication date: August 6, 2020
    Applicant: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Yuka YOSHIDA, Naoki MARUYAMA, Tomoko HIGASHIUCHI, Kazumasa FUKUDA, Keiichiro NISHIMURA, Yoshitaka TAKEZAWA
  • Patent number: 10697486
    Abstract: A laser welded joint has weld metal provided between a plurality of steel sheets. A chemical composition of the weld metal has predetermined components, and average hardness of the weld metal is 350 to 540 in Vickers hardness. In the weld metal, distribution density of porosities having a diameter of 2 ?m to 50 ?m is equal to or less than 5.0 pieces/mm2. In the weld metal, distribution density of oxide inclusions having a diameter of 3 ?m or more is 0.1 to 8.0 pieces/mm2.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: June 30, 2020
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Naoki Maruyama, Yasuaki Naito, Shigeru Yonemura, Yasunobu Miyazaki, Takuya Kuwayama
  • Publication number: 20200199287
    Abstract: An epoxy resin, comprising an epoxy compound, the epoxy compound comprising two or more structures represented by the following Formula (I) and at least one divalent biphenyl group: wherein, in Formula (I), each of R1 to R4 independently represents a hydrogen atom or an alkyl group having from 1 to 3 carbon atoms.
    Type: Application
    Filed: October 14, 2016
    Publication date: June 25, 2020
    Applicant: Hitachi Chemical Company, Ltd.
    Inventors: Tomoko HIGASHIUCHI, Naoki MARUYAMA, Yuka YOSHIDA, Kazumasa FUKUDA, Yoshitaka TAKEZAWA
  • Patent number: 10597485
    Abstract: A production method for a glassy liquid-crystalline epoxy resin, comprising a process of cooling a liquid-crystalline epoxy resin to cause transition into a glassy state.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: March 24, 2020
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Shingo Tanaka, Tomoko Higashiuchi, Naoki Maruyama, Kazumasa Fukuda, Yoshitaka Takezawa, Fusao Hojo
  • Publication number: 20200066480
    Abstract: There is provided a crystal orientation figure creating device for use in a charged particle beam device for making a charged particle beam irradiated to a surface of a sample, the crystal orientation figure creating device being configured to create a crystal orientation figure, which is a figure representing a crystal coordinate system of a crystal at a position selected on the surface with respect to an incident direction of the charged particle beam, the crystal orientation figure creating device including: an orientation information acquiring unit configured to acquire crystal orientation information with respect to the incident direction at the selected position; an incident direction information acquiring unit configured to acquire information relating to an incident direction of the charged particle beam with respect to the sample; and a crystal orientation figure creating unit configured to create a crystal orientation figure in a changed incident direction at the selected position, based on the crys
    Type: Application
    Filed: October 25, 2018
    Publication date: February 27, 2020
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Takafumi AMINO, Takashige MORI, Naoki MARUYAMA
  • Publication number: 20200066481
    Abstract: There is provided a tilting parameters calculating device for use in a charged particle beam device for making a charged particle beam irradiated to a surface of a sample mounted on a sample stage, the tilting parameters calculating device being configured to calculate tilting parameters, the tilting parameters being input parameters to control a tilting direction and a tilting value of the sample and/or the charged particle beam, the input parameters being necessary to change an incident direction of the charged particle beam with respect to the sample, the tilting parameters calculating device including a tilting parameters calculating unit for calculating the tilting parameters based on information that indicates the incident direction of the charged particle beam with respect to a crystal lying at a selected position on the surface in a state where the incident direction of the charged particle beam with respect to the sample is in a predetermined incident direction, the information being designated on a
    Type: Application
    Filed: May 31, 2018
    Publication date: February 27, 2020
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Takashige MORI, Takafumi AMINO, Naoki MARUYAMA, Akira TANIYAMA, Shunsuke TANIGUCHI, Chie YOKOYAMA
  • Patent number: 10507629
    Abstract: A hot-dip galvanized steel sheet wherein the hot-dip galvanized steel sheet comprises a base steel sheet and a hot-dip galvanized layer, a ferrite phase is, by volume fraction, 40% or more and 97% or less in a range of ? thickness to ? thickness centered at a position of ¼ thickness from the surface of the base steel sheet, a hard structure is 3% or more in total, wherein the hot-dip galvanized steel sheet has the hot-dip galvanized layer in which Fe is 5.0% or less and Al is 1.0% or less, and columnar grains formed of a ? phase is 20% or more in an entire interface between the plated layer and the base steel sheet on the surface of the base steel sheet in which a ratio of a volume fraction of the hard structure in a surface layer range of 20 ?m depth in a steel sheet direction from an interface between the hot-dip galvanized layer and the base steel sheet is 0.10 times or more to 0.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: December 17, 2019
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Hiroyuki Kawata, Takeshi Yasui, Kohei Ueda, Naoki Maruyama, Yuji Yamaguchi, Satoshi Uchida, Ryosuke Komami, Hayato Arai, Yasuhiro Nakashima, Toyomitsu Nakamura