Patents by Inventor Koji Iwata

Koji Iwata 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: 11808519
    Abstract: A drying system includes: drying furnaces connected in series; an air supply system including an air supply pipe, the air supply system being configured to supply dry air into the furnaces, and an air exhaust system including an air exhaust pipe, the air exhaust system being configured to exhaust wet air in the furnaces, wherein the air supply system and the air exhaust system are being alternately connected between the drying furnaces; a first flow rate regulation valve provided to the air supply system; and a second flow rate regulation valve provided to the air exhaust system.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: November 7, 2023
    Assignee: JFE STEEL CORPORATION
    Inventors: Tomohiro Sekiguchi, Koji Iwata, Shino Katayama, Koki Sugiyama, Yuta Sakata
  • Patent number: 11635204
    Abstract: Provided is a surface combustion burner which solves the passage blocking in a combustion part caused by dust, and enables stable combustion for a long term. The surface combustion burner comprises: a nozzle configured to discharge fuel gas and air for combustion; and a laminate, provided on a tip of the nozzle, in which a plurality of mesh plates is laminated, wherein the laminate includes a portion having an offset arrangement between at least any adjacent ones of the mesh plates.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: April 25, 2023
    Assignee: JFE STEEL CORPORATION
    Inventors: Yukimasa Horikawa, Kazuaki Hara, Koji Iwata, Hiromichi Fujiwara
  • Publication number: 20220187017
    Abstract: A drying system includes: drying furnaces connected in series; an air supply system including an air supply pipe, the air supply system being configured to supply dry air into the furnaces, and an air exhaust system including an air exhaust pipe, the air exhaust system being configured to exhaust wet air in the furnaces, wherein the air supply system and the air exhaust system are being alternately connected between the drying furnaces; a first flow rate regulation valve provided to the air supply system; and a second flow rate regulation valve provided to the air exhaust system.
    Type: Application
    Filed: March 16, 2020
    Publication date: June 16, 2022
    Applicant: JFE STEEL CORPORATION
    Inventors: Tomohiro SEKIGUCHI, Koji IWATA, Shino KATAYAMA, Koki SUGIYAMA, Yuta SAKATA
  • Patent number: 11209225
    Abstract: A heat exchanger includes a hollow heat exchanger main body that is enclosed in a radiant tube, and a heat conductor that is disposed on outer periphery of the heat exchanger main body. The heat exchanger performs heat exchange between a first gas flowing in between the radiant tube and the heat exchanger main body and a second gas flowing in hollow interior of the heat exchanger main body, and the heat exchanger comprises a turbulence flow generation promoting unit configured to promote generation of a turbulence flow from the first gas flowing in between the radiant tube and the heat exchanger main body, the turbulence flow generation promoting unit being disposed on the outer periphery of the heat exchanger main body without welding.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: December 28, 2021
    Assignee: JFE STEEL CORPORATION
    Inventors: Koji Iwata, Kazuaki Hara
  • Patent number: 10718680
    Abstract: A sensor sheet is manufactured by forming a conductive heat-sensitive material 5 over first wiring electrodes 3a and forming second wiring electrodes 4a over the conductive heat-sensitive material 5. For this reason, no adhesion surface (boundary surface), which is formed when adhesion is performed later, exists between the first wiring electrode 3a and the conductive heat-sensitive material 5 and between the conductive heat-sensitive material 5 and the second wiring electrodes 4a.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: July 21, 2020
    Assignee: NITTA CORPORATION
    Inventors: Hisashi Yamamoto, Masahiro Hatsuda, Mitsumasa Kitano, Tomohiro Agaya, Koji Iwata
  • Publication number: 20200011525
    Abstract: Provided is a surface combustion burner which solves the passage blocking in a combustion part caused by dust, and enables stable combustion for a long term. The surface combustion burner comprises: a nozzle configured to discharge fuel gas and air for combustion; and a laminate, provided on a tip of the nozzle, in which a plurality of mesh plates is laminated, wherein the laminate includes a portion having an offset arrangement between at least any adjacent ones of the mesh plates.
    Type: Application
    Filed: March 22, 2018
    Publication date: January 9, 2020
    Applicant: JFE STEEL CORPORATION
    Inventors: Yukimasa HORIKAWA, Kazuaki HARA, Koji IWATA, Hiromichi FUJIWARA
  • Publication number: 20190219346
    Abstract: A heat exchanger includes a hollow heat exchanger main body that is enclosed in a radiant tube, and a heat conductor that is disposed on outer periphery of the heat exchanger main body. The heat exchanger performs heat exchange between a first gas flowing in between the radiant tube and the heat exchanger main body and a second gas flowing in hollow interior of the heat exchanger main body, and the heat exchanger comprises a turbulence flow generation promoting unit configured to promote generation of a turbulence flow from the first gas flowing in between the radiant tube and the heat exchanger main body, the turbulence flow generation promoting unit being disposed on the outer periphery of the heat exchanger main body without welding.
    Type: Application
    Filed: August 22, 2017
    Publication date: July 18, 2019
    Applicant: JFE Steel Corporation
    Inventors: Koji Iwata, Kazuaki Hara
  • Patent number: 10323453
    Abstract: A multiple-glazed glass unit of the present invention is adapted to separate an indoor space and an outdoor space and includes a pair of glass panes opposed across a gap layer to be spaced at a predetermined distance from each other. Low-emissivity (Low-E) films are formed on both principal surfaces of one of the pair of glass panes that is located closer to the indoor space. The low-emissivity film formed on one of the two principal surfaces that faces the indoor space has an arithmetic average surface roughness Ra of 14 nm or less. This multiple-glazed glass unit is configurable to have a higher SHGC value ever than before as well as keeping a low U-value.
    Type: Grant
    Filed: June 11, 2015
    Date of Patent: June 18, 2019
    Assignee: NIPPON SHEET GLASS COMPANY, LIMITED
    Inventors: Kentaro Fukuda, Koji Iwata, Tetsuo Minaai
  • Patent number: 10105807
    Abstract: Provided is an abnormality diagnosis device for a machine tool, and an abnormality diagnosis method, whereby it is possible to diagnose the degree of damage to a spindle system due to a collision.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: October 23, 2018
    Assignee: MITSUBISHI HEAVY INDUSTRIES MACHINE TOOL CO., LTD.
    Inventors: Hideaki Yamamoto, Koji Iwata
  • Publication number: 20180266908
    Abstract: A sensor sheet is manufactured by forming a conductive heat-sensitive material 5 over first wiring electrodes 3a and forming second wiring electrodes 4a over the conductive heat-sensitive material 5. For this reason, no adhesion surface (boundary surface), which is formed when adhesion is performed later, exists between the first wiring electrode 3a and the conductive heat-sensitive material 5 and between the conductive heat-sensitive material 5 and the second wiring electrodes 4a.
    Type: Application
    Filed: December 18, 2015
    Publication date: September 20, 2018
    Applicant: NITTA CORPORATION
    Inventors: Hisashi YAMAMOTO, Masahiro HATSUDA, Mitsumasa KITANO, Tomohiro AGAYA, Koji IWATA
  • Patent number: 9963380
    Abstract: Inorganic fibers including the following composition, SiO2, Al2O3, MgO and CaO being main components, and the inorganic fibers being produced by a melting method: SiO2: 3.0 wt % or more and less than 48.0 wt %, Al2O3: more than 20.0 wt % and 80.0 wt % or less, MgO: 1.0 wt % or more and 50.0 wt % or less, CaO: 1.0 wt % or more and 50.0 wt % or less, and Fe2O3: 0.0 wt % or more and less than 1.0 wt %.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: May 8, 2018
    Assignee: NICHIAS CORPORATION
    Inventors: Koji Iwata, Hideki Kitahara, Takahito Mochida, Ken Yonaiyama, Kazuki Soeda, Tatsuro Miki
  • Patent number: 9932264
    Abstract: Inorganic fibers including the following composition, SiO2, MgO and CaO being main components: SiO2: 73.6 wt % to 85.9 wt %, MgO: 9.0 wt % to 21.3 wt %, CaO: 5.1 wt % to 12.4 wt %, Al2O3: 0 wt % or more and less than 2.3 wt %, and Fe2O3: 0 wt % to 0.50 wt %.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: April 3, 2018
    Assignee: NICHIAS CORPORATION
    Inventors: Koji Iwata, Hideki Kitahara, Ken Yonaiyama, Kazuki Soeda, Tatsuro Miki
  • Publication number: 20170197872
    Abstract: Inorganic fibers including the following composition, SiO2, MgO and CaO being main components: SiO2: 73.6 wt % to 85.9 wt %, MgO: 9.0 wt % to 21.3 wt %, CaO: 5.1 wt % to 12.4 wt %, Al2O3: 0 wt % or more and less than 2.3 wt %, and Fe2O3: 0 wt % to 0.50 wt %.
    Type: Application
    Filed: October 15, 2014
    Publication date: July 13, 2017
    Applicant: NICHIAS CORPORATION
    Inventors: Koji IWATA, Hideki KITAHARA, Ken YONAIYAMA, Kazuki SOEDA, Tatsuro MIKI
  • Publication number: 20170137319
    Abstract: Inorganic fibers including the following composition, SiO2, Al2O3, MgO and CaO being main components, and the inorganic fibers being produced by a melting method: SiO2: 3.0 wt % or more and less than 48.0 wt %, Al2O3: more than 20.0 wt % and 80.0 wt % or less, MgO: 1.0 wt % or more and 50.0 wt % or less, CaO: 1.0 wt % or more and 50.0 wt % or less, and Fe2O3: 0.0 wt % or more and less than 1.0 wt %.
    Type: Application
    Filed: June 16, 2015
    Publication date: May 18, 2017
    Applicant: NICHIAS CORPORATION
    Inventors: Koji IWATA, Hideki KITAHARA, Takahito MOCHIDA, Ken YONAIYAMA, Kazuki SOEDA, Tatsuro MIKI
  • Publication number: 20170114588
    Abstract: A multiple-glazed glass unit of the present invention is adapted to separate an indoor space and an outdoor space and includes a pair of glass panes opposed across a gap layer to be spaced at a predetermined distance from each other. Low-emissivity (Low-E) films are formed on both principal surfaces of one of the pair of glass panes that is located closer to the indoor space. The low-emissivity film formed on one of the two principal surfaces that faces the indoor space has an arithmetic average surface roughness Ra of 14 nm or less. This multiple-glazed glass unit is configurable to have a higher SHGC value ever than before as well as keeping a low U-value.
    Type: Application
    Filed: June 11, 2015
    Publication date: April 27, 2017
    Inventors: Kentaro FUKUDA, Koji IWATA, Tetsuo MINAAI
  • Publication number: 20170001226
    Abstract: There are provided: a seamless steel pipe formed from a cylindrical steel material billet through a hot isostatic extrusion step, wherein a depth of a contiguous flaw formed on an inner periphery surface and an outer periphery surface of the steel pipe is 50 ?m or less; a hollow spring obtained by forming a hollow body in a shape of a coil or a bar or a bar with curved part from the seamless steel pipe made of spring steel and applying a surface treatment to the hollow body so that the hollow body has compressive residual stress; and a method for producing seamless steel pipe including: a billet molding step; a first heating step; a hot isostatic extrusion step; a second heating step; an extension step; a third heating step; and a pickling step.
    Type: Application
    Filed: September 16, 2016
    Publication date: January 5, 2017
    Inventors: Kotaro TOYOTAKE, Koji IWATA, Tomoyuki MINAMI, Noritoshi TAKAMURA
  • Publication number: 20150352679
    Abstract: Provided is an abnormality diagnosis device for a machine tool, and an abnormality diagnosis method, whereby it is possible to diagnose the degree of damage to a spindle system due to a collision.
    Type: Application
    Filed: March 5, 2014
    Publication date: December 10, 2015
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hideaki YAMAMOTO, Koji IWATA
  • Patent number: 9174875
    Abstract: An inorganic fibrous shaped refractory article having a high bio-solubility which is capable of exhibiting a desired heat resistance without containing expensive ceramic fibers, alumina powder and silica powder can be provided at a low production cost and with a low product price. An inorganic fibrous shaped refractory article includes 2 to 95 mass % of rock wool, 2 to 95 mass % of inorganic powder having a needle-like crystal structure and 3 to 32 mass % of a binder. Preferably, in the an inorganic fibrous shaped refractory article, the inorganic powder having a needle-like crystal structure has an average length of 1 to 3000 ?m and an aspect ratio of 1 to 1000, and more preferably the inorganic powder having a needle-like crystal structure is wollostonite powder or sepiolite powder.
    Type: Grant
    Filed: December 24, 2010
    Date of Patent: November 3, 2015
    Assignee: Nichias Corporation
    Inventors: Koji Iwata, Ken Yonaiyama
  • Patent number: 9067832
    Abstract: To provide a highly bio-soluble fibrous shaped refractory article which can develop desired heat resistance without containing ceramic fibers such as aluminum silicate fibers, alumina powder and silica powder and can be provided at a low production cost and a low product cost. An inorganic fibrous shaped refractory article comprising 2 to 95 mass % of bio-soluble inorganic fibers having a dissolution ratio in a physiological saline at 40° C. of 1 mass % or more, 2 to 95 mass % of inorganic powder having a needle-like crystal structure and 3 to 32 mass % of a binder, and in particular, it is an inorganic fibrous refractory article wherein the inorganic powder having the needle-like crystal structure has an average length of 1 to 3000 ?m and an aspect ratio of 1 to 1000.
    Type: Grant
    Filed: December 24, 2010
    Date of Patent: June 30, 2015
    Assignee: NICHIAS CORPORATION
    Inventors: Koji Iwata, Ken Yonaiyama
  • Publication number: 20150144830
    Abstract: Inorganic fibers which contain Na2O, SiO2 and Al2O3 as main components and do not react with alumina at 600° C.
    Type: Application
    Filed: April 12, 2013
    Publication date: May 28, 2015
    Inventors: Koji Iwata, Hideki Kitahara, Takahito Mochida, Yoichi Ishikawa, Tatsuro Miki, Ken Yonaiyama