Patents by Inventor Jun Maki

Jun Maki 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).

  • Publication number: 20210095368
    Abstract: Fe-Al-based plated hot-stamped member exhibiting excellent formed part corrosion resistance and post-coating corrosion resistance and manufacturing method. The hot-stamping member includes Fe-Al-based plated layer on one or both surfaces of a base material, the base material has a predetermined steel component, Fe-Al-based plated layer has a thickness of 10 ?m or more and 60 ?m or less, formed by A, B, C and D layers sequentially from a surface toward the base material, and each of the four layers is a Fe-Al-based intermetallic compound containing Al, Fe, Si, Mn and Cr for predetermined contents with the balance made up of impurities, the D layer further contains Kirkendall voids each of which cross-sectional area is 3 ?m2-30 ?m2 for 10 pieces/6000 ?m2 or more and 40 pieces/6000 ?m2 or less.
    Type: Application
    Filed: February 15, 2019
    Publication date: April 1, 2021
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Soshi FUJITA, Yuki SUZUKI, Masahiro FUDA, Jun MAKI, Hideaki IRIKAWA, Tatsuya KUBOTA
  • Publication number: 20210089885
    Abstract: According to one embodiment, a training device includes a first memory, a second memory, and a processing circuit. The first memory is a memory accessible at a higher speed than the second memory. The training device executes a training process of a machine learning model using a stochastic gradient descent method. The processing circuit stores a first output produced by the process of a first layer in the second memory, and stores a second output produced by the process of a second layer, in a forward process of the training process. The processing circuit updates a parameter of the second layer based on the second output stored in the first memory, reads the first output stored in the second memory, and updates a parameter of the first layer based on the read first output, in a backward process of the training process.
    Type: Application
    Filed: March 6, 2020
    Publication date: March 25, 2021
    Applicant: Kioxia Corporation
    Inventors: Daisuke MIYASHITA, Jun DEGUCHI, Asuka MAKI, Fumihiko TACHIBANA, Shinichi SASAKI, Kengo NAKATA
  • Patent number: 10871573
    Abstract: A timing signal output device includes a receiver configured to output a reference signal on the basis of satellite signals received from a plurality of positioning satellites, an oscillator configured to output a clock signal, and a processor configured to switch, on the basis of statistical value information concerning a statistical value obtained by performing statistical processing of elevation angles of the plurality of positioning satellites, a first mode for generating a timing signal based on the reference signal and a second mode for generating a timing signal based on the clock signal.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: December 22, 2020
    Inventors: Jun Shiina, Yoshiyuki Maki
  • Publication number: 20200347489
    Abstract: An Al plated electric resistance welded steel pipe for hardening use suppressing the formation of scale to the inside of the plating layer while performing hot forming and an Al plated hollow member using that Al plated electric resistance welded steel pipe, wherein the Al plated electric resistance welded steel pipe for hardening use is comprised of a base material made of a tubular steel plate and having a predetermined chemical composition and an electric resistance welded zone provided at a seam portion of the steel plate and extending in a longitudinal direction of the steel plate, the base material is further provided with an intermetallic compound layer positioned on the surface of the steel plate and including an Al-Fe-Si-based intermetallic compound and an Al plating layer positioned on the surface of the intermetallic compound layer and containing Al and Si, and 70×X/D?Y/t?30 is satisfied, wherein X (?m) is a thickness of the intermetallic compound layer, Y (?m) is a thickness of the Al plating laye
    Type: Application
    Filed: November 20, 2017
    Publication date: November 5, 2020
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Jun MAKI, Soshi FUJITA, Toyomitsu NAKAMURA
  • Patent number: 10800933
    Abstract: A surface treatment solution for a plated steel sheet to be hot-pressed comprising a ZnO aqueous dispersion (A) and a water dispersible organic resin (B), wherein the ZnO aqueous dispersion (A) comprises water and ZnO particle size having 50 to 300 nm particles, the water dispersible organic resin (B) has a 5 to 45 mgKOH/g acid value and 5 to 300 nm emulsion particle size, and a mass ratio (WA/WB) of a mass of ZnO particles in the ZnO aqueous dispersion (WA) to a mass of solid content of the water dispersible organic resin (WB) is 30/70 to 95/5.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: October 13, 2020
    Assignee: NIHON PARKERIZING CO., LTD.
    Inventors: Soshi Fujita, Jun Maki, Shintaro Yamanaka, Masao Kurosaki, Tatsuya Suzuki, Kensuke Mizuno, Takumi Kozaki, Takahiro Kodama
  • Publication number: 20200283867
    Abstract: Provided are a stainless steel sheet with good corrosion resistance, low contact resistance and good press workability without the use of expensive materials such as gold or rare metals, and a method of manufacture the same. A method of manufacturing a stainless steel sheet includes: preparing a slab having a chemical composition including, in mass %: 20 to 26% Cr, up to 0.1% N, up to 2.0% Si, etc. (step S1); performing hot rolling and cold rolling on the slab to produce a rolled steel sheet with a thickness of 50 to 200 ?m (step S2); an annealing step in which the rolled steel sheet is annealed and cooled in a gas atmosphere containing nitrogen (step S3); and pickling the rolled steel sheet after the annealing step with a solution containing a non-oxidizing acid (step S4). The stainless steel sheet has an N content of 0.6 to 2.0% by mass.
    Type: Application
    Filed: September 19, 2017
    Publication date: September 10, 2020
    Applicant: NIPPON STEEL STAINLESS STEEL CORPORATION
    Inventors: Hideya KAMINAKA, Yoshitaka NISHIYAMA, Koichi NOSE, Jun MAKI, Junko IMAMURA, Kohei MAEJIMA, Yuya TAKASHIMA
  • Publication number: 20200232077
    Abstract: A sheet includes: a base; an Al-plating layer on at least one of opposite surfaces of the base; an intermediate coating layer on a surface of the Al-plating layer; and a surface coating layer formed on a surface of the intermediate coating layer and containing ZnO particles with a mean particle size of 0.10 ?m or more and 5.00 ?m or less and an organic resin such that an amount of coating of the ZnO particles is 0.5 g/m2 or more and 10.0 g/m2 or less in terms of metallic zinc.
    Type: Application
    Filed: March 23, 2018
    Publication date: July 23, 2020
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Shinichi YAMAGUCHI, Jun MAKI, Soshi FUJITA, Shintaro YAMANAKA, Michiko KONNO, Tetsuya TOBA
  • Publication number: 20200189233
    Abstract: A hot stamped member has a steel, an Al—Fe intermetallic compound layer formed on the steel, and an oxide film layer formed on the Al—Fe intermetallic compound layer, in which the oxide film layer is made up of one or more A group elements selected from the group consisting of Be, Mg, Ca, Sr, Ba, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, and Zn, Al, oxygen, and impurities, a proportion of the A group element in the oxide film layer excluding the oxygen is 0.01 atom % or more and 80 atom % or less, a thickness t of the oxide film layer is 0.1 to 10.0 ?m, and, in the case of measuring the A group element in the oxide film layer in a thickness direction from a surface of the oxide film layer using a GDS, a maximum value of a detection intensity of the A group element in a range from the surface to one-third of the thickness t is 3.0 times or more an average value of detection intensities of the A group element in a range from two thirds of the thickness t to t.
    Type: Application
    Filed: June 1, 2018
    Publication date: June 18, 2020
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Yuki SUZUKI, Soshi FUJITA, Jun MAKI, Kazuhisa KUSUMI, Masahiro FUDA, Hideaki IRIKAWA
  • Publication number: 20200065316
    Abstract: The present invention ensures improving responsiveness in a P2P type distributed database system that includes a plurality of node computers capable of storing management target data in storage devices. The storage devices include a first type storage device having a high input/output performance and a second type storage device having a low input/output performance. There is provided the storage devices that store KeySpace management tables including response count information indicative of a count of the node computers from which the identical management target data are to be read. The identical management target data are required to respond to a read request of the management target data. The node computers by a count indicated by the response count information and capable of storing the management target data in the first type storage devices among the plurality of node computers are determined as storage destinations when a CPU receives a write request of new management target data.
    Type: Application
    Filed: February 28, 2019
    Publication date: February 27, 2020
    Inventors: Jun MIZUNO, Takashi TAMESHIGE, Soichi TAKASHIGE, Nobuhiro MAKI
  • Publication number: 20200026998
    Abstract: According to one embodiment, an information processing apparatus for convolution operations in layers of a convolutional neural network, includes a memory and a product-sum operating circuitry. The memory is configured to store items of information indicative of an input, a weight to the input, and a bit width determined for each filter of the weight. The product-sum operating circuitry is configured to perform a product-sum operation based on the items of information indicative of the input, the weight, and the bit width, stored in the memory.
    Type: Application
    Filed: March 4, 2019
    Publication date: January 23, 2020
    Applicant: Toshiba Memory Corporation
    Inventors: Asuka MAKI, Daisuke Miyashita, Kengo Nakata, Fumihiko Tachibana, Jun Deguchi, Shinichi Sasaki
  • Publication number: 20190390303
    Abstract: There is provided a coated steel product having a steel product and a coating layer including a Zn—Al—Mg alloy layer disposed on a surface of the steel product, in which the Zn—Al—Mg alloy layer has a Zn phase, the Zn phase contains a Mg—Sn intermetallic compound phase, and the coating layer consists of Zn: more than 65.0%, Al: from more than 5.0% to less than 25.0%, Mg: from more than 3.0% to less than 12.5%, Sn: 0.1% to 20.0% in terms of percent (%) by mass, given amounts of optional elements, and impurities, and has a chemical composition that satisfies the following Formulas 1 to 5: Bi+In<Sn??Formula 1: Y+La+Ce?Ca??Formula 2: Si<Sn??Formula 3: 0?Cr+Ti+Ni+Co+V+Nb+Cu+Mn<0.25??Formula 4: 0?Sr+Sb+Pb+B<0.5.
    Type: Application
    Filed: January 26, 2018
    Publication date: December 26, 2019
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Kohei TOKUDA, Jun MAKI, Yasuto GOTO, Takuya MITSUNOBU
  • Patent number: 10511489
    Abstract: The difference in operational management service among a plurality of storage apparatuses is detected by an apparatus that provides at least one operational management service to the storage apparatuses of a plurality of user sites via a communication network. The apparatus classifies the storage apparatuses of the plurality of user sites on the basis of use statuses, and generate at least one group including the plurality of storage apparatuses; and a service difference extraction unit configured to detect, out of the plurality of storage apparatuses that constitute the group, a first storage device that is inferior in terms of a predetermined index and a second storage device that is superior to the first storage device in terms of the predetermined index, and extract a difference between a first operational management service applied to the first storage apparatus and a second operational management service applied to the second storage apparatus.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: December 17, 2019
    Assignee: Hitachi, Ltd.
    Inventors: Noriko Nakajima, Jun Nakajima, Nobuhiro Maki
  • Patent number: 10505205
    Abstract: A titanium product for a separator of a proton exchange membrane fuel cell according to the present invention includes: a base material that consists of commercially pure titanium; a first oxide layer that is formed in a surface layer of the titanium product, consists of TiO2 of a rutile crystallinity, and has a thickness of 0.1 to 1.5 nm; and a second oxide layer that is formed between the base material and the first oxide layer, consists of TiOx (1<x<2), and has a thickness of 3 to 20 nm. This titanium product is suitable to be used as a separator of a proton exchange membrane fuel cell that has a high corrosion resistance in an environment in a fuel cell, is capable of keeping a low contact resistance with an electrode consisting of carbon fiber and the like, and is inexpensive.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: December 10, 2019
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Junko Imamura, Yoshitaka Nishiyama, Yasuhiro Masaki, Jun Maki, Shunsuke Taniguchi, Hideya Kaminaka
  • Publication number: 20190366686
    Abstract: The present invention provides an alloyed Al plated steel sheet for hot stamping, which is a steel sheet having, on the surface, an Al—Fe alloyed layer that includes an A phase (Fe—Al-based alloy phase including 45% to 85% of Fe and 4% to 13% of Si) and has a thickness of 15 ?m or more, in which a proportion of a length occupied by the A phase in an uppermost surface of a cross section perpendicular to the surface of the steel sheet is 10% or more and 50% or less.
    Type: Application
    Filed: February 2, 2017
    Publication date: December 5, 2019
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Masahiro FUDA, Jun MAKI, Soshi FUJITA, Kazuhisa KUSUMI, Shinichiro TABATA
  • Publication number: 20190271063
    Abstract: The present invention has as its object the provision of steel sheet for hot stamping use which is excellent in part strength after hot stamping and delayed fracture resistance comprised of large C content high strength steel sheet in which effective hydrogen traps are formed in the steel material. The steel sheet of the present invention solves this problem by forming Fe—Mn-based composite oxides in the steel sheet and trapping hydrogen at the interfaces of the composite oxides and matrix steel and in the voids around the composite oxides. Specifically, it provides steel sheet for hot stamping use which is comprised of chemical ingredients which contain, by mass %, C: 0.05 to 0.40%, Si: 0.02% or less, Mn: 0.1 to 3%, S: 0.02% or less, P: 0.03% or less, Al: 0.005% or less, Ti: 0.01% or less, N: 0.01% or less, one or both of Cr and Mo in a total of 0.005 to 1%, and O: 0.003 to 0.03% and which have a balance of Fe and unavoidable impurities and which contains average diameter 0.
    Type: Application
    Filed: May 17, 2019
    Publication date: September 5, 2019
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Kazuhisa KUSUMI, Yuji OGAWA, Masayuki ABE, Hidekuni MURAKAMI, Kengo TAKEDA, Jun MAKI
  • Patent number: 10344360
    Abstract: The present invention has as its object the provision of steel sheet for hot stamping use which is excellent in part strength after hot stamping and delayed fracture resistance comprised of large C content high strength steel sheet in which effective hydrogen traps are formed in the steel material. The steel sheet of the present invention solves this problem by forming Fe—Mn-based composite oxides in the steel sheet and trapping hydrogen at the interfaces of the composite oxides and matrix steel and in the voids around the composite oxides. Specifically, it provides steel sheet for hot stamping use which is comprised of chemical ingredients which contain, by mass %, C: 0.05 to 0.40%, Si: 0.02% or less, Mn: 0.1 to 3%, S: 0.02% or less, P: 0.03% or less, Al: 0.005% or less, Ti: 0.01% or less, N: 0.01% or less, one or both of Cr and Mo in a total of 0.005 to 1%, and O: 0.003 to 0.03% and which have a balance of Fe and unavoidable impurities and which contains average diameter 0.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: July 9, 2019
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Kazuhisa Kusumi, Yuji Ogawa, Masayuki Abe, Hidekuni Murakami, Kengo Takeda, Jun Maki
  • Publication number: 20190160519
    Abstract: [Object] There are provided automobile parts and a method for manufacturing the automobile parts. The automobile parts have an excellent corrosion resistance after coated with a electrodeposition paint with smaller thickness, improve formability and productivity in hot pressing, and also improve chemical conversion treatability after hot press-forming.
    Type: Application
    Filed: February 1, 2019
    Publication date: May 30, 2019
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Jun MAKI, Shintaro YAMANAKA, Hideaki IRIKAWA
  • Patent number: 10232426
    Abstract: [Object] There are provided automobile parts and a method for manufacturing the automobile parts. The automobile parts have an excellent corrosion resistance after coated with a electrodeposition paint with smaller thickness, improve formability and productivity in hot pressing, and also improve chemical conversion treatability after hot press-forming.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: March 19, 2019
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Jun Maki, Shintaro Yamanaka, Hideaki Irikawa
  • Patent number: 10196717
    Abstract: To provide a plated steel sheet for hot pressing, a hot pressing method for the plated steel sheet, and an automobile part made by the hot pressing method that has an excellent lubricity with less deposition amount and can improve formability and productivity in hot pressing work and also can improve chemical conversion treatability after hot press forming, there is provided an Al plating layer formed on one side or both sides of the steel sheet, the Al plating layer containing at least Al, and further containing one or more elements, at a total content of 0.02 to 2 mass %, selected from Mg, Ca, Sr, Li, Na, and K; and a surface coating layer laminated on the Al plating layer and containing at least ZnO.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: February 5, 2019
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Jun Maki, Shintaro Yamanaka, Masao Kurosaki
  • Publication number: 20190010565
    Abstract: Provided is an austenitic heat resistant alloy having high creep strength and high toughness even in a high temperature environment. This austenitic heat resistant alloy has a chemical composition consisting of: in mass %, C: 0.03 to less than 0.25%, Si: 0.01 to 2.0%, Mn: not more than 2.0%, Cr: 10 to less than 30%, Ni: more than 25 to 45%, Al: more than 2.5 to less than 4.5%, Nb: 0.2 to 3.5%, N: not more than 0.025%, with the balance being Fe and impurities, wherein P and S in the impurities are respectively, P: not more than 0.04% and S: not more than 0.01%. In the structure, a total volume ratio of precipitates having a circle equivalent diameter of not less than 6 ?m is not more than 5%.
    Type: Application
    Filed: January 4, 2017
    Publication date: January 10, 2019
    Applicant: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Norifumi Kochi, Jun Maki, Yoshitaka Nishiyama