Patents by Inventor Nobuyuki Nakamura

Nobuyuki Nakamura 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: 10323293
    Abstract: A high-carbon hot rolled steel sheet with excellent hardenability and small in-plane anisotropy, and a method for manufacturing the steel sheet are provided. The steel sheet has a chemical composition including, by mass %, C: 0.20 to 0.48%, Si: not more than 0.1%, Mn: not more than 0.5%, P: not more than 0.03%, S: not more than 0.01%, sol. Al: not more than 0.10%, N: not more than 0.005% and B: 0.0005 to 0.0050%, the balance including Fe and inevitable impurities. The steel sheet includes a microstructure containing ferrite and cementite. The cementite has an average grain size of not more than 1.0 ?m. The steel sheet has an in-plane anisotropy of r value, ?r, of not more than 0.1 in absolute value.
    Type: Grant
    Filed: December 25, 2012
    Date of Patent: June 18, 2019
    Assignee: JFE Steel Corporation
    Inventors: Yuka Miyamoto, Takashi Kobayashi, Nobuyuki Nakamura, Yoshimasa Funakawa
  • Patent number: 10301698
    Abstract: A hot-rolled steel sheet for a generator rim contains a structure containing a ferrite phase with an areal ratio of 95% or more in which precipitates containing Ti and V whose average grain diameter is less than 10 nm are precipitated in crystal grains of the ferrite phase. The ferrite phase has an average crystal grain diameter within the range of 2 ?m or more and less than 10 ?m. The hot-rolled steel sheet for a generator rim has strength with a yield strength YS in a rolling direction of 700 MPa or more and electromagnetic properties with a magnetic flux density B50 of 1.5 T or more and a magnetic flux density B100 of 1.6 T or more.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: May 28, 2019
    Assignee: JFE Steel Corporation
    Inventors: Nobuyuki Nakamura, Katsumi Nakajima, Yoshimasa Funakawa, Kazutaka Okimoto, Takahiko Ogura
  • Patent number: 10077489
    Abstract: A steel sheet for soft-nitriding has a composition containing: C: 0.05% or more to 0.10% or less; Si: 0.5% or less; Mn: 0.7% or more to 1.5% or less; P: 0.05% or less; S: 0.01% or less; Al: 0.01% or more to 0.06% or less; Cr: 0.5% or more to 1.5% or less; Nb: 0.005% or more to 0.025% or less; and N: 0.005% or less, on a mass percent basis, such that C and Nb satisfy 0.10?Nb/C?0.30 (where C and Nb are respective contents of the elements (by mass %)), wherein balance comprises Fe and incidental impurities, and a microstructure that is a complex-phase microstructure containing ferrite and pearlite, and the microstructure having a ratio of a microstructure other than the ferrite and the pearlite of 1% or less, and the microstructure having a ratio of polygonal ferrite in the ferrite of less than 50%.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: September 18, 2018
    Assignee: JFE Steel Corporation
    Inventors: Takashi Kobayashi, Nobuyuki Nakamura, Tetsuya Mega
  • Patent number: 10077491
    Abstract: A high carbon hot rolled steel sheet and a method for manufacturing the same are provided, wherein excellent cold workability and excellent hardenability are obtained stably. The high carbon hot rolled steel sheet has a composition containing C: 0.20% to 0.48%, Si: 0.1% or less, Mn: 0.5% or less, P: 0.03% or less, S: 0.01% or less, sol. Al: more than 0.10% and 1.0% or less, N: 0.005% or less, B: 0.0005% to 0.0050%, and the remainder composed of Fe and incidental impurities, on a percent by mass basis, and a microstructure composed of ferrite and cementite, wherein the average grain size of the above-described ferrite is 10 to 20 ?m and the spheroidization ratio of the above-described cementite is 90% or more.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: September 18, 2018
    Assignee: JFE Steel Corporation
    Inventors: Nobuyuki Nakamura, Takashi Kobayashi, Yoshimasa Funakawa
  • Patent number: 10077485
    Abstract: A steel sheet for soft-nitriding has a composition containing: C: 0.05% or more to 0.10% or less; Si: 0.5% or less; Mn: 0.7% or more to 1.5% or less; P: 0.05% or less; S: 0.01% or less; Al: 0.01% or more to 0.06% or less; Cr: 0.5% or more to 1.5% or less; V: 0.03% or more to 0.30% or less; and N: 0.005% or less, on a mass percent basis, wherein a ratio of amount of solute V to the V content (amount of solute V/V content) is more than 0.50, and balance comprises Fe and incidental impurities, and a complex-phase microstructure containing ferrite and pearlite.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: September 18, 2018
    Assignee: JFE Steel Corporation
    Inventors: Takashi Kobayashi, Nobuyuki Nakamura, Yoshimasa Funakawa
  • Publication number: 20180100212
    Abstract: A cold-rolled steel sheet has: a predetermined chemical composition; and a microstructure in which tempered martensite and bainite are contained in a total area ratio of 95-100% with respect to a whole volume of the microstructure; a number of predetermined inclusion groups is at most 0.8/mm2, the inclusion groups being formed by one or more inclusion particles, the one or more inclusion particles having a major axis length of 0.3 ?m or more and extending and/or distributed in a dot-sequence manner along a rolling direction; a number of carbides mainly composed of Fe having a predetermined size is at most 3,500/mm2; a number of carbides that are distributed in the tempered martensite and/or in the bainite and that have a diameter of 10 nm to 50 nm is at least 0.7×107/mm2; and prior ? grains have a mean grain size of 18 ?m or less.
    Type: Application
    Filed: March 23, 2016
    Publication date: April 12, 2018
    Applicant: JFE STEEL CORPORATION
    Inventors: Yoshihiko ONO, Yoshimasa FUNAKAWA, Ryosuke YAMAGUCHI, Nobuyuki NAKAMURA
  • Patent number: 9925070
    Abstract: This invention relates to a technique for hermetically sealing an artificial leg including a cylinder device. A rod member of the cylinder device extends from the inside to the outside of a shell structure of the cylinder device. The rod member is hermetically sealed at the periphery thereof by a bellows packing member. The bellows packing member comprises an inner bead, an outer bead which concentrically surrounds the outside of the inner bead, and a bellows packing body part which connects the inner and outer beads. The bellows packing body part includes corrugations, and each corrugation is less curved than an imaginary circle which is concentric with the inner bead and the outer bead. Both ends of each of the plurality of corrugations extend to the outer bead or are located at positions closer to the outer bead than the inner bead.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: March 27, 2018
    Assignee: NABTESCO CORPORATION
    Inventors: Yoshiaki Nakaya, Taishiro Misao, Hiroaki Hashimoto, Nobuyuki Nakamura, Yoshihiro Tada
  • Patent number: 9419882
    Abstract: The present invention relates to a network analyzing system that performs analyzing for a network. The network analyzing system includes one or a plurality of data processing modules and a network analysis apparatus, the network analysis apparatus includes a unit for accommodating the data processing modules, a unit for holding data-to-be-analyzed, a unit for storing data processing definition information that defines steps that carry out the processing of the data-to-be-analyzed using the data processing modules, a unit for causing the data processing modules to carry out data processing based on the data processing definition information to obtain a data processing result, and each data processing module includes a unit connecting to the network analysis apparatus, and a unit for carrying out data processing in accordance with a request.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: August 16, 2016
    Assignee: Oki Electric Industry Co., Ltd.
    Inventors: Nobuyuki Nakamura, Satoshi Ikada, Masayuki Muratani
  • Patent number: 9394595
    Abstract: A high carbon steel sheet having a chemical composition containing C: 0.20% to 0.50%, Si: 1.0% or less, Mn: 2.0% or less, P: 0.03% or less, S: 0.02% or less, sol. Al: 0.08% or less, N: 0.02% or less, and the remainder composed of Fe and incidental impurities, on a percent by mass basis, and a microstructure composed of ferrite and cementite, wherein the fraction of pro-eutectoid ferrite, among the ferrite, in the whole steel microstructure is 20% or more and less than 50%, the average grain size dc of the cementite in the region from the position at one-quarter of the sheet thickness of the steel sheet to the sheet thickness center is 0.50 to 1.5 ?m, and the average grain size ds of the cementite in the region from the surface of the steel sheet to the position at one-quarter of the sheet thickness satisfies ds/dc?0.8.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: July 19, 2016
    Assignee: JFE STEEL CORPORATION
    Inventors: Takashi Kobayashi, Nobuyuki Nakamura, Yoshimasa Funakawa
  • Patent number: 9385067
    Abstract: A semiconductor device with a semiconductor substrate having a first surface and an opposite-facing second surface, a through electrode electrically connected to the semiconductor element and penetrating the semiconductor substrate from the first surface to the second surface, and a conductor, not electrically connected to the semiconductor element, penetrating the semiconductor substrate from the first surface to the second surface, where the through electrode and the conductor have different shapes in plan view.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: July 5, 2016
    Assignee: PS4 Luxco S.a.r.l.
    Inventor: Nobuyuki Nakamura
  • Publication number: 20160138141
    Abstract: A high strength hot rolled steel sheet with good formability, which has good magnetic properties, excellent punchability, and a tensile strength of 780 MPa or more. The high strength hot rolled steel sheet having a chemical composition containing C: 0.070% to 0.140%, Si: 0.10% to 1.00%, Mn: 1.00% to 1.80%, P: 0.050% or less, S: 0.0050% or less, N: 0.0080% or less, Al: 0.010% to 0.100%, Ti: 0.050% to 0.150%, and the remainder composed of Fe and incidental impurities, on a percent by mass basis, and 95% or more of bainite microstructure on a volume fraction basis, wherein carbides constituting 80% or more of total precipitation carbides are dispersed at grain boundaries of bainitic ferrite constituting the bainite microstructure and 80% or more of total precipitation carbides have particle grain sizes of 20 to 300 nm.
    Type: Application
    Filed: March 11, 2014
    Publication date: May 19, 2016
    Inventors: Katsumi NAKAJIMA, Yoshimasa FUNAKAWA, Nobuyuki NAKAMURA
  • Patent number: 9222155
    Abstract: A high strength hot-rolled steel sheet has a tensile strength of not less than 780 MPa and exhibits excellent stretch flangeability and excellent fatigue resistance. A steel has a composition containing C at 0.05 to 0.15%, Si at 0.2 to 1.2%, Mn at 1.0 to 2.0%, P at not more than 0.04%, S at not more than 0.005%, Ti at 0.05 to 0.15%, Al at 0.005 to 0.10% and N at not more than 0.007%.
    Type: Grant
    Filed: May 30, 2011
    Date of Patent: December 29, 2015
    Assignee: JFE Steel Corporation
    Inventors: Nobuyuki Nakamura, Hayato Saito, Katsumi Nakajima, Yoshimasa Funakawa, Noriaki Moriyasu, Takayuki Murata
  • Patent number: 9217139
    Abstract: The purpose of the present invention is to provide a nuclease that secretes natural nonpathogenic microorganisms extracellularly, has higher specific activity than conventional nucleases, and is useful in nucleolytic degradation on an industrial scale. This purpose is achieved with an extracellularly secreted nuclease derived from Streptomyces bacteria, the nuclease having specific activity equal to or greater than the specific activity of Benzonase® when supplied to double-stranded DNA for 30 minutes at 37° C. in 20 mM Tris/HCl (pH 8.5) containing 1 mM MgCl2 and 1 mM CaCl2 after purification, using double-stranded DNA, single-stranded DNA, and RNA as substrates.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: December 22, 2015
    Assignee: JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGY
    Inventors: Kozue Mori, Yukari Ohta, Yuji Hatada, Nobuyuki Nakamura, Masayuki Miyazaki
  • Publication number: 20150362652
    Abstract: A backlight device includes an LED; a light guide plate that has a light-exiting surface provided at one plate surface, an opposite surface provided at a plate surface on the opposite side to the light-exiting surface, and a light-receiving side face provided at one side face, that is arranged such that the light-receiving side face faces the LED and that guides light from the LED; a chassis having a plate surface arranged so as to face the opposite surface and housing at least the LED and the light guide plate; and an optical sheet that is arranged so as to face the light-exiting surface, that provides light that has exited the light guide plate with an optical function and that has a bent portion that extends further toward the outside than an edge of the light-exiting surface and is bent toward the opposite surface side and as a result covers at least part of a side face of the light guide plate.
    Type: Application
    Filed: January 21, 2014
    Publication date: December 17, 2015
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Keiji HAYASHI, Eiji NITTOU, Toshikazu MATSUKAWA, Nobuyuki NAKAMURA, Yoshitsugu KAWAHIGASHI, Takeshi SUZUKI
  • Publication number: 20150354034
    Abstract: A steel sheet for soft-nitriding has a composition containing: C: 0.05% or more to 0.10% or less; Si: 0.5% or less; Mn: 0.7% or more to 1.5% or less; P: 0.05% or less; S: 0.01% or less; Al: 0.01% or more to 0.06% or less; Cr: 0.5% or more to 1.5% or less; V: 0.03% or more to 0.30% or less; and N: 0.005% or less, on a mass percent basis, wherein a ratio of amount of solute V to the V content (amount of solute V/V content) is more than 0.50, and balance comprises Fe and incidental impurities, and a complex-phase microstructure containing ferrite and pearlite.
    Type: Application
    Filed: June 27, 2012
    Publication date: December 10, 2015
    Applicant: JFE Steel Corporation
    Inventors: Takashi Kobayashi, Nobuyuki Nakamura, Yoshimasa Funakawa
  • Patent number: 9194017
    Abstract: Hot-rolled steel has a chemical composition containing, by mass %, C: 0.18% or more and 0.29% or less, N: 0.0050% or less, Ti: 0.002% or more and 0.05% or less, B: 0.0005% or more and 0.0050% or less, and appropriately controlled amounts of Si, Mn, P, S, Al, and a tensile strength of 500 MPa or less with a variation in tensile strength of 60 MPa or less throughout a region including the edges in the width direction of the steel sheet, and having excellent cold formability and hardenability.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: November 24, 2015
    Assignee: JFE Steel Corporation
    Inventors: Nobuyuki Nakamura, Takashi Kobayashi, Tetsuya Mega
  • Publication number: 20150299830
    Abstract: A steel sheet for soft-nitriding has a composition containing: C: 0.05% or more to 0.10% or less; Si: 0.5% or less; Mn: 0.7% or more to 1.5% or less; P: 0.05% or less; S: 0.01% or less; Al: 0.01% or more to 0.06% or less; Cr: 0.5% or more to 1.5% or less; Nb: 0.005% or more to 0.025% or less; and N: 0.005% or less, on a mass percent basis, such that C and Nb satisfy 0.10?Nb/C?0.30 (where C and Nb are respective contents of the elements (by mass %)), wherein balance comprises Fe and incidental impurities, and a microstructure that is a complex-phase microstructure containing ferrite and pearlite, and the microstructure having a ratio of a microstructure other than the ferrite and the pearlite of 1% or less, and the microstructure having a ratio of polygonal ferrite in the ferrite of less than 50%.
    Type: Application
    Filed: June 27, 2012
    Publication date: October 22, 2015
    Applicant: JFE Steel Corporation
    Inventors: Takashi Kobayashi, Nobuyuki Nakamura, Tetsuya Mega
  • Publication number: 20150250622
    Abstract: This invention relates to a technique for hermetically sealing an artificial leg including a cylinder device. A shell structure surrounds the outside of the cylinder device. The cylinder device is not entirely received within the shell structure, but a rod member extends to the outside of the shell structure from the cylinder body within the shell structure and a part of the rod member is located outside the shell structure. In this invention, the rod member, which extends from the inside to the outside of the shell structure, is hermetically sealed at the periphery thereof by a bellows packing member. The bellows packing member comprises an inner bead, an outer bead which concentrically surrounds the outside of the inner bead, and a bellows packing body part which connects the inner and outer beads.
    Type: Application
    Filed: August 30, 2012
    Publication date: September 10, 2015
    Applicant: Nabtesco Corporation
    Inventors: Yoshiaki Nakaya, Taishiro Misao, Hiroaki Hashimoto, Nobuyuki Nakamura, Yoshihiro Tada
  • Publication number: 20150206827
    Abstract: A semiconductor device with a semiconductor substrate having a first surface and an opposite-facing second surface, a through electrode electrically connected to the semiconductor element and penetrating the semiconductor substrate from the first surface to the second surface, and a conductor, not electrically connected to the semiconductor element, penetrating the semiconductor substrate from the first surface to the second surface, where the through electrode and the conductor have different shapes in plan view.
    Type: Application
    Filed: April 2, 2015
    Publication date: July 23, 2015
    Inventor: Nobuyuki NAKAMURA
  • Patent number: 9054081
    Abstract: A semiconductor device includes an isolation portion penetrating a semiconductor substrate from a first surface to a second surface positioned opposite the first surface. The isolation portion includes a first insulating film and a second insulating film. The first insulating film has a slit portion at a side of the first surface and the slit portion is buried with the second insulating film. The semiconductor device further includes an electrode penetrating the semiconductor substrate that is surrounded by the isolation portion.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: June 9, 2015
    Assignee: PS4 LUXCO S.A.R.L.
    Inventors: Nobuyuki Nakamura, Takuyuki Muramoto, Takeo Tsukamoto