Patents by Inventor Masashi Shoji

Masashi Shoji 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: 11476020
    Abstract: To provide a rare earth magnet having excellent coercive force and a production method thereof. A rare earth magnet, wherein the rare earth magnet comprises a magnetic phase containing Sm, Fe, and N, a Zn phase present around the magnetic phase, and an intermediate phase present between the magnetic phase and the Zn phase, wherein the intermediate phase contains Zn and the oxygen content of the intermediate phase is higher than the oxygen content of the Zn phase; and a method for producing a rare earth magnet, including mixing a magnetic raw material powder having an oxygen content of 1.0 mass % or less and an improving agent powder containing metallic Zn and/or a Zn alloy, and heat-treating the mixed powder.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: October 18, 2022
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, TOHOKU UNIVERSITY
    Inventors: Noritsugu Sakuma, Tetsuya Shoji, Kazuaki Haga, Satoshi Sugimoto, Masashi Matsuura
  • Patent number: 10714761
    Abstract: A fuel cell catalyst layer includes a plurality of carbon particles, a plurality of catalyst particles, and at least one plate-shaped carbon member disposed between the plurality of carbon particles. The plurality of catalyst particles are supported on surfaces of the plurality of carbon particles. The plate-shaped carbon member may be replaced with a rod-shaped carbon member.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: July 14, 2020
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Kazuya Yamasaki, Hitoshi Ishimoto, Masashi Shoji, Keiichi Kondou
  • Patent number: 10707494
    Abstract: Disclosed is a gas-diffusion layer used for fuel cells, including: a porous material that includes as main ingredients conductive particles and a polymer resin, wherein said gas-diffusion layer internally possesses pores with a size from 0.01 ?m to 0.05 ?m, and hollows with a size from 1 ?m to 200 ?m. Further disclosed is a process for producing a gas-diffusion layer used for fuel cells, including: (i) kneading conductive particles, a polymer resin, a pore-forming agent, a surfactant, and a dispersion solvent; (ii) rolling the mixture obtained in Step (i) to shape said mixture into a sheet; (iii) baking the sheet-shaped mixture to sublime the pore-forming agent, thereby forming hollows therein, and to remove the surfactant and the dispersion solvent; and (iv) further rolling the baked mixture to adjust a thickness of the baked mixture.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: July 7, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Tsutomu Kawashima, Keiichi Kondou, Masashi Shoji, Koji Ogawa
  • Publication number: 20190181480
    Abstract: Provided is a membrane electrode assembly capable of keeping contact resistance between a catalyst layer and a gas diffusion layer (GDL) low. The membrane electrode assembly includes an electrolyte membrane and a pair of electrode layers disposed to sandwich the electrolyte membrane. The pair of electrode layers includes a pair of catalyst layers disposed to sandwich the electrolyte membrane, and a pair of GDLs disposed on opposite sides of the electrolyte membrane on the respective pair of catalyst layers. Each of the pair of GDLs includes a plurality of GDL protrusions that protrude on a catalyst layer side from the GDL and enter in the catalyst layer, and a gas flow path formed on an opposite side of the catalyst layer. Each of the pair of catalyst layers has a plurality of catalyst layer recesses in contact with the respective plurality of GDL protrusions.
    Type: Application
    Filed: February 13, 2019
    Publication date: June 13, 2019
    Inventors: MASASHI SHOJI, HITOSHI ISHIMOTO, SHINICHIRO IMURA, HIROAKI SUZUKI
  • Publication number: 20180301711
    Abstract: Disclosed is a gas-diffusion layer used for fuel cells, including: a porous material that includes as main ingredients conductive particles and a polymer resin, wherein said gas-diffusion layer internally possesses pores with a size from 0.01 ?m to 0.05 ?m, and hollows with a size from 1 ?m to 200 ?m. Further disclosed is a process for producing a gas-diffusion layer used for fuel cells, including: (i) kneading conductive particles, a polymer resin, a pore-forming agent, a surfactant, and a dispersion solvent; (ii) rolling the mixture obtained in Step (i) to shape said mixture into a sheet; (iii) baking the sheet-shaped mixture to sublime the pore-forming agent, thereby forming hollows therein, and to remove the surfactant and the dispersion solvent; and (iv) further rolling the baked mixture to adjust a thickness of the baked mixture.
    Type: Application
    Filed: October 21, 2016
    Publication date: October 18, 2018
    Inventors: TSUTOMU KAWASHIMA, KEIICHI KONDOU, MASASHI SHOJI, KOJI OGAWA
  • Publication number: 20170365862
    Abstract: A fuel cell catalyst layer includes a plurality of carbon particles, a plurality of catalyst particles, and at least one plate-shaped carbon member disposed between the plurality of carbon particles. The plurality of catalyst particles are supported on surfaces of the plurality of carbon particles. The plate-shaped carbon member may be replaced with a rod-shaped carbon member.
    Type: Application
    Filed: September 5, 2017
    Publication date: December 21, 2017
    Inventors: KAZUYA YAMASAKI, HITOSHI ISHIMOTO, MASASHI SHOJI, KEIICHI KONDOU
  • Publication number: 20170179498
    Abstract: A fuel cell gas diffusion layer includes: a porous layer containing conductive particles and binder resin as primary components; a groove-shaped fluid flow path provided on one of main surfaces of the porous layer; and a conductive wire portion extending along the one of the main surfaces and a surface of the fluid flow path, the conductive wire portion being a layered collection of a plurality of conductive fibers which has pores.
    Type: Application
    Filed: March 1, 2017
    Publication date: June 22, 2017
    Inventors: MASASHI SHOJI, TSUTOMU KAWASHIMA, SHINICHIRO IMURA, KEIICHI KONDOU
  • Publication number: 20170162878
    Abstract: A first porous layer includes a fluid flow path that has a groove-shape and has an opening in one main surface of the first porous layer. A second porous layer is disposed on the other main surface of the first porous layer. A proportion of an area occupied by conductive fibers per unit area in a cross-sectional surface of the first porous layer is smaller than a proportion of an area occupied by conductive fibers per unit area in a cross-sectional surface of the second porous layer. The second porous layer is exposed in a part of a surface of the fluid flow path.
    Type: Application
    Filed: February 16, 2017
    Publication date: June 8, 2017
    Inventors: SHINICHIRO IMURA, TSUTOMU KAWASHIMA, MASASHI SHOJI
  • Patent number: 9366011
    Abstract: A work machine management device includes: a receiving unit that receives, from a work machine, sensor data indicating states of various sections of the work machine, and alarm data indicating that the work machine has determined that an abnormality has occurred in the work machine; and an operating level classifying unit that, based on the sensor data received by the receiving unit, classifies an operating state of the work machine as being any one of a plurality of predetermined operating levels.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: June 14, 2016
    Assignee: Hitachi Corporation Machinery Co., Ltd.
    Inventors: Kazuki Kubota, Hiroyuki Adachi, Shohei Kamiya, Yutaka Watanabe, Hiroshi Sazanami, Masashi Shoji
  • Publication number: 20150149047
    Abstract: A work machine management device includes: a receiving unit that receives, from a work machine, sensor data indicating states of various sections of the work machine, and alarm data indicating that the work machine has determined that an abnormality has occurred in the work machine; and an operating level classifying unit that, based on the sensor data received by the receiving unit, classifies an operating state of the work machine as being any one of a plurality of predetermined operating levels.
    Type: Application
    Filed: April 25, 2013
    Publication date: May 28, 2015
    Applicant: Hitachi Construction Machinery Co., Ltd.
    Inventors: Kazuki Kubota, Hiroyuki Adachi, Shohei Kamiya, Yutaka Watanabe, Hiroshi Sazanami, Masashi Shoji
  • Patent number: 9001497
    Abstract: An electrode foil includes a substrate and a coarse film layer having a void therein and formed on the substrate. The coarse film layer includes at least a first coarse film layer formed on the substrate. The first coarse film layer is composed of arrayed first columnar bodies. Each of the first columnar bodies is composed of metallic microparticles stacked on a surface of the substrate and extending in a curve from the surface of the substrate.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: April 7, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Akiyoshi Oshima, Hiroki Kamiguchi, Masashi Shoji, Hitoshi Ishimoto
  • Patent number: 8971022
    Abstract: An electrode foil including a substrate made of metal material, a first layer made of metal oxide and formed on the substrate, a second layer made of TiNxOy (x>y>0) and formed on the first layer, and a third layer made of TiNxOy (0<x<y) and formed on the second layer.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: March 3, 2015
    Assignee: Panasonic Corporation
    Inventors: Hitoshi Ishimoto, Masashi Shoji, Hiroki Kamiguchi
  • Patent number: 8749954
    Abstract: Electrode foil includes an aluminum alloy having a composition in a region at least 10 ?m deep from a surface of the foil. The composition includes aluminum as a main component and zirconium of at least 0.03 at % and at most 0.5 at %.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: June 10, 2014
    Assignee: Panasonic Corporation
    Inventors: Masashi Shoji, Hitoshi Ishimoto, Ayumi Kochi, Tomohiro Maruoka, Naomi Kurihara, Takao Sato
  • Patent number: 8654509
    Abstract: An electrode-foil includes a foil having a metal layer on the surface thereof, a first dielectric film formed on the metal layer, and a second dielectric film formed on the first dielectric film. The first dielectric film is composed of a metal oxide of a metal constituting the metal layer. The thickness of the first dielectric film is greater than 0 nm and less than 10 nm. The second dielectric film is predominantly composed of a metal compound different from the metal oxide of the first dielectric film.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: February 18, 2014
    Assignee: Panasonic Corporation
    Inventors: Hitoshi Ishimoto, Masashi Shoji
  • Publication number: 20140036416
    Abstract: An electrode foil including a substrate made of metal material, a first layer made of metal oxide and formed on the substrate, a second layer made of TiNxOy (x>y>0) and formed on the first layer, and a third layer made of TiNxOy (0<x<y) and formed on the second layer.
    Type: Application
    Filed: May 14, 2012
    Publication date: February 6, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Hitoshi Ishimoto, Masashi Shoji, Hiroki Kamiguchi
  • Publication number: 20120200985
    Abstract: Electrode foil includes an aluminum alloy having a composition in a region at least 10 ?m deep from a surface of the foil. The composition includes aluminum as a main component and zirconium of at least 0.03 at % and at most 0.5 at %.
    Type: Application
    Filed: October 19, 2010
    Publication date: August 9, 2012
    Inventors: Masashi Shoji, Hitoshi Ishimoto, Ayumi Kochi, Tomohiro Maruoka, Naomi Kurihara, Takao Sato
  • Publication number: 20120176727
    Abstract: An electrode-foil includes a foil having a metal layer on the surface thereof, a first dielectric film formed on the metal layer, and a second dielectric film formed on the first dielectric film. The first dielectric film is composed of a metal oxide of a metal constituting the metal layer. The thickness of the first dielectric film is greater than 0 nm and less than 10 nm. The second dielectric film is predominantly composed of a metal compound different from the metal oxide of the first dielectric film.
    Type: Application
    Filed: February 7, 2011
    Publication date: July 12, 2012
    Inventors: Hitoshi Ishimoto, Masashi Shoji
  • Publication number: 20120170173
    Abstract: An electrode foil includes a substrate and a coarse film layer having a void therein and formed on the substrate. The coarse film layer includes at least a first coarse film layer formed on the substrate. The first coarse film layer is composed of arrayed first columnar bodies. Each of the first columnar bodies is composed of metallic microparticles stacked on a surface of the substrate and extending in a curve from the surface of the substrate.
    Type: Application
    Filed: March 14, 2011
    Publication date: July 5, 2012
    Inventors: Akiyoshi Oshima, Hiroki Kamiguchi, Masashi Shoji, Hitoshi Ishimoto
  • Patent number: 7794883
    Abstract: A nonaqueous electrolyte secondary battery of the present invention includes a nonaqueous electrolyte and a positive electrode 13 that occludes lithium ions reversibly. The positive electrode 13 includes active material layers 13b and a sheet-like collector 13a that supports the active material layers 13b. The collector 13a contains aluminum and at least one element other than aluminum. The average composition that is obtained by averaging the ratio of the elements composing the collector 13a in the direction of the thickness of the collector 13a is equal to the composition of an alloy whose liquidus temperature is 630° C. or lower. The present invention makes it possible to prevent heat from being generated due to an internal short circuit in the nonaqueous electrolyte secondary battery.
    Type: Grant
    Filed: February 8, 2005
    Date of Patent: September 14, 2010
    Assignee: Panasonic Corporation
    Inventors: Naoki Matsumura, Emiko Igaki, Motoi Kawamura, Masashi Shoji, Miyuki Nakai
  • Publication number: 20080248385
    Abstract: A nonaqueous electrolyte secondary battery of the present invention includes a nonaqueous electrolyte and a positive electrode 13 that occludes lithium ions reversibly. The positive electrode 13 includes active material layers 13b and a sheet-like collector 13a that supports the active material layers 13b. The collector 13a contains aluminum and at least one element other than aluminum. The average composition that is obtained by averaging the ratio of the elements composing the collector 13a in the direction of the thickness of the collector 13a is equal to the composition of an alloy whose liquidus temperature is 630° C. or lower. The present invention makes it possible to prevent heat from being generated due to an internal short circuit in the nonaqueous electrolyte secondary battery.
    Type: Application
    Filed: February 8, 2005
    Publication date: October 9, 2008
    Applicant: Matsushita Electric Industrial., Ltd.
    Inventors: Naoki Matsumura, Emiko Igaki, Motoi Kawamura, Masashi Shoji, Miyuki Nakai