Patents by Inventor Hideki Ohata

Hideki Ohata 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: 10470301
    Abstract: Provided are a conductive pattern manufacturing method and a conductive pattern formed substrate, capable of easily achieving a narrow pitch. A metal nanowire layer 12 is formed on the entirety of a part of at least one of the main faces of a substrate 10, pulsed light is irradiated thereto through a mask 14 provided with a light transmission portion 14a formed in a predetermined pattern, and the metal nanowires in the metal nanowire layer 12 at the region having the above predetermined pattern were sintered, to thereby obtain conductivity at the predetermined patterned region. Accordingly, a substrate provided with a conductive pattern having any selected pattern can be produced by simple steps.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: November 5, 2019
    Assignee: SHOWA DENKO K.K.
    Inventors: Hiroshi Uchida, Kenji Shinozaki, Eri Okazaki, Hideki Ohata, Yasunao Miyamura
  • Patent number: 10099291
    Abstract: Provided are a metal nanowire production method capable of producing long and thin metal nanowires, and metal nanowires produced thereby. A metal nanowire production method comprising, a step for preparing a solution containing a metal salt, a polymer, at least one selected from a group consisting of halides, sulfides, carbonates, and sulfates, and an aliphatic alcohol, and a step for heating and reacting the solution at the temperature of 100° C. to 250° C. for 10 minutes or more while maintaining a practical shear stress applied to the solution at 10 mPa·m or less, wherein, during the heating and reacting step, ultraviolet-visible absorption spectrum change of the solution is measured, and a reaction time is controlled on the basis of the ultraviolet-visible absorption spectrum information.
    Type: Grant
    Filed: May 26, 2014
    Date of Patent: October 16, 2018
    Assignees: SHOWA DENKO K.K., OSAKA UNIVERSITY
    Inventors: Katsuaki Suganuma, Jinting Jiu, Masaya Nogi, Tohru Sugahara, Teppei Araki, Hiroshi Uchida, Hideki Ohata, Masanao Hara, Eri Okazaki
  • Patent number: 9854670
    Abstract: Provided are a transparent electrode and a production method thereof, the transparent electrode using metal nanowires and/or metal nanotubes as conductive components, and showing favorable surface flatness, conductivity, and light transmittance. A transparent conductive ink is prepared by dispersing metal nanowires and/or metal nanotubes in a solution formed by dissolving a thermoset or thermoplastic binder resin having no fluidity within the range of 5 to 40° C. to a solvent, the content of the binder resin being 100 to 2500 parts by mass relative to 100 parts by mass of the metal nanowires and/or metal nanotubes. An electrode pattern having a desired shape is printed on a substrate with the transparent conductive ink, and pulsed light is irradiated to the printed electrode pattern, to thereby obtain a transparent electrode having a surface resistance of 0.1 to 500?/? and a surface arithmetic average roughness Ra satisfying Ra?5 nm.
    Type: Grant
    Filed: August 14, 2014
    Date of Patent: December 26, 2017
    Assignee: SHOWA DENKO K.K.
    Inventors: Hiroshi Uchida, Yasunao Miyamura, Eri Okazaki, Hideki Ohata
  • Publication number: 20160205775
    Abstract: Provided are a transparent electrode and a production method thereof, the transparent electrode using metal nanowires and/or metal nanotubes as conductive components, and showing favorable surface flatness, conductivity, and light transmittance. A transparent conductive ink is prepared by dispersing metal nanowires and/or metal nanotubes in a solution formed by dissolving a thermoset or thermoplastic binder resin having no fluidity within the range of 5 to 40° C. to a solvent, the content of the binder resin being 100 to 2500 parts by mass relative to 100 parts by mass of the metal nanowires and/or metal nanotubes. An electrode pattern having a desired shape is printed on a substrate with the transparent conductive ink, and pulsed light is irradiated to the printed electrode pattern, to thereby obtain a transparent electrode having a surface resistance of 0.1 to 500?/? and a surface arithmetic average roughness Ra satisfying Ra?5 nm.
    Type: Application
    Filed: August 14, 2014
    Publication date: July 14, 2016
    Applicant: SHOWA DENKO K.K.
    Inventors: Hiroshi UCHIDA, Yasunao MIYAMURA, Eri OKAZAKI, Hideki OHATA
  • Publication number: 20160121403
    Abstract: Provided are a metal nanowire production method capable of producing long and thin metal nanowires, and metal nanowires produced thereby. A metal nanowire production method comprising, a step for preparing a solution containing a metal salt, a polymer, at least one selected from a group consisting of halides, sulfides, carbonates, and sulfates, and an aliphatic alcohol, and a step for heating and reacting the solution at the temperature of 100° C. to 250° C. for 10 minutes or more while maintaining a practical shear stress applied to the solution at 10 mPa·m or less, wherein, during the heating and reacting step, ultraviolet-visible absorption spectrum change of the solution is measured, and a reaction time is controlled on the basis of the ultraviolet-visible absorption spectrum information.
    Type: Application
    Filed: May 26, 2014
    Publication date: May 5, 2016
    Applicants: SHOWA DENKO K.K., OSAKA UNIVERSITY
    Inventors: Katsuaki SUGANUMA, Jinting JIU, Masaya NOGI, Tohru SUGAHARA, Teppei ARAKI, Hiroshi UCHIDA, Hideki OHATA, Masanao HARA, Eri OKAZAKI
  • Publication number: 20160073494
    Abstract: Provided are a conductive pattern manufacturing method and a conductive pattern formed substrate, capable of easily achieving a narrow pitch. A metal nanowire layer 12 is formed on the entirety of a part of at least one of the main faces of a substrate 10, pulsed light is irradiated thereto through a mask 14 provided with a light transmission portion 14a formed in a predetermined pattern, and the metal nanowires in the metal nanowire layer 12 at the region having the above predetermined pattern were sintered, to thereby obtain conductivity at the predetermined patterned region. Accordingly, a substrate provided with a conductive pattern having any selected pattern can be produced by simple steps.
    Type: Application
    Filed: April 17, 2014
    Publication date: March 10, 2016
    Applicant: SHOWA DENKO K.K.
    Inventors: Hiroshi UCHIDA, Kenji SHINOZAKI, Eri OKAZAKI, Hideki OHATA, Yasunao MIYAMURA
  • Patent number: 7232469
    Abstract: An electrode for electrolytic capacitors having a large capacitance and having excellent tan ?, heat resistance, humidity resistance and stability. An electrolytic capacitor using the electrode. An electrode obtained by attaching a compound having a siloxane bond onto the surface of an electrode body comprising a valve-acting metal having formed thereon a dielectric film. The compound having a siloxane bond is attached by coating, dipping or vapor deposition. A solid electrolytic capacitor obtained by forming an electrolyte comprising an electrically conducting polymer on the electrode.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: June 19, 2007
    Assignee: Showa Denko K.K.
    Inventors: Ryuji Monden, Atsushi Sakai, Yuji Furuta, Hideki Ohata
  • Publication number: 20070129534
    Abstract: The present invention relates to a novel ?-conjugated copolymer having a high conductivity, obtained through chamically oxidative polymerization of a thiophene-based unit represented by formula (IV) and a pyrrole-based unit represented by formula (III) at a low temperature, preferably in the presence of a compound containing a counter anion, and production method therefor, and further relates to an article coated with the copolymer, a solid electrolytic capacitor using the copolymer as solid electrolyte and production method for the capacitor.
    Type: Application
    Filed: September 24, 2004
    Publication date: June 7, 2007
    Applicant: SHOWA DENKO K.K.
    Inventors: Hideki Ohata, Yoshihiro Saida, Shuichi Naijo
  • Patent number: 7141081
    Abstract: The present invention relates to a solid electrolytic capacitor having a masking structure in which the insulation between the anode part and the cathode part can be ensured without fail, to its production method, to a method for coating a masking agent on a solid electrolytic capacitor substrate, and to apparatus therefore. According to the present invention, the masking material covers the dielectric film on the metal material having valve action and sufficiently infiltrates into the core metal made of a metal having valve action while the solid electrolyte is masked by the masking material without fail, so that a solid electrolytic capacitor can be produced that has a reduced leakage current and a reduced stress generated at the reflow treatment or the like.
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: November 28, 2006
    Assignee: Showa Denko K.K.
    Inventors: Atsushi Sakai, Ryuji Monden, Hiroshi Nitoh, Toshihiro Okabe, Yuji Furuta, Hideki Ohata, Koro Shirane
  • Publication number: 20060179627
    Abstract: A method for producing a solid electrolytic capacitor, comprising coating a solution containing a monomer of an electroconducting polymer and a solution containing an oxidizing agent in repeating sequence on a valve-acting metal anode having formed on the surface thereof an oxide dielectric film, and then polymerizing wherein the electroconducting polymer is formed by setting the humidity in the atmosphere of polymerization process to from 10% to less than 60%.
    Type: Application
    Filed: April 6, 2006
    Publication date: August 17, 2006
    Inventors: Atsushi Sakai, Ryuji Monden, Toru Sawaguchi, Katsuhiko Yamazaki, Yuji Furuta, Hideki Ohata
  • Patent number: 7087292
    Abstract: A solid electrolytic capacitor comprises an electrically conducting polymer composition formed on the surface of an oxide film which is formed on a valve-acting metal, by specifying the viscosity of an oxidizing agent solution and/or a monomer solution, particularly by specifying the viscosity to less than about 100 cp. A solid electrolytic capacitor can comprise an electroconducting polymer composition formed on the surface of an oxide film layer which is formed on a valve-acting metal, wherein a monomer compound or a derivative thereof as a repeating unit is polymerized by setting the humidity in the atmosphere to from about 10% to less than about 60%.
    Type: Grant
    Filed: December 24, 2003
    Date of Patent: August 8, 2006
    Assignee: Showa Denko K.K.
    Inventors: Atsushi Sakai, Ryuji Monden, Toru Sawaguchi, Katsuhiko Yamazaki, Yuji Furuta, Hideki Ohata
  • Patent number: 7060205
    Abstract: The present invention relates to a solid electrolytic capacitor comprising a solid electrolyte layer and an electrically conducting layer comprising metallic powder or an electrically conducting layer comprising an electrically conducting carbon layer and a layer formed thereon and comprising metallic powder in which at least one of said layers contains a rubber-like elastic material; a production process thereof; a solid electrolyte for use in the solid electrolytic capacitor; a production process of the solid electrolyte; an electrically conducting paste for use in the solid electrolytic capacitor; and an electrically carbon conducting paste for use in the solid electrolytic capacitor. The solid electrolytic capacitor of the present invention can be made compact and can be endowed with high-capacitance and low-impedance and is excellent in external force-relaxing properties, productivity, heat resistance and moisture resistance, etc.
    Type: Grant
    Filed: May 18, 2004
    Date of Patent: June 13, 2006
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Ryuji Monden, Katsuhiko Yamazaki, Atsushi Sakai, Yuji Furuta, Hideki Ohata, Koro Shirane, Hiroshi Konuma
  • Patent number: 7046504
    Abstract: The present invention relates to a solid electrolytic capacitor having a masking structure in which the insulation between the anode part and the cathode part can be ensured without fail, to its production method, to a method for coating a masking agent on a solid electrolytic capacitor substrate, and to apparatus therefore. According to the present invention, the masking material covers the dielectric film on the metal material having valve action and sufficiently infiltrates into the core metal made of a metal having valve action while the solid electrolyte is masked by the masking material without fail, so that a solid electrolytic capacitor can be produced that has a reduced leakage current and a reduced stress generated at the reflow treatment or the like.
    Type: Grant
    Filed: June 28, 2004
    Date of Patent: May 16, 2006
    Assignee: Showa Denko K.K.
    Inventors: Atsushi Sakai, Ryuji Monden, Hiroshi Nitoh, Toshihiro Okabe, Yuji Furuta, Hideki Ohata, Koro Shirane
  • Publication number: 20060098394
    Abstract: The present invention relates to a solid electrolytic capacitor having a masking structure in which the insulation between the anode part and the cathode part can be ensured without fail, to its production method, to a method for coating a masking agent on a solid electrolytic capacitor substrate, and to apparatus therefore. According to the present invention, the masking material covers the dielectric film on the metal material having valve action and sufficiently infiltrates into the core metal made of a metal having valve action while the solid electrolyte is masked by the masking material without fail, so that a solid electrolytic capacitor can be produced that has a reduced leakage current and a reduced stress generated at the reflow treatment or the like.
    Type: Application
    Filed: December 20, 2005
    Publication date: May 11, 2006
    Inventors: Atsushi Sakai, Ryuji Monden, Hiroshi Nitoh, Toshihiro Okabe, Yuji Furuta, Hideki Ohata, Koro Shirane
  • Publication number: 20060088972
    Abstract: An electrode for electrolytic capacitors having a large capacitance and having excellent tan ?, heat resistance, humidity resistance and stability. An electrolytic capacitor using the electrode. An electrode obtained by attaching a compound having a siloxane bond onto the surface of an electrode body comprising a valve-acting metal having formed thereon a dielectric film. The compound having a siloxane bond is attached by coating, dipping or vapor deposition. A solid electrolytic capacitor obtained by forming an electrolyte comprising an electrically conducting polymer on the electrode.
    Type: Application
    Filed: December 12, 2005
    Publication date: April 27, 2006
    Inventors: Ryuji Monden, Atsushi Sakai, Yuji Furuta, Hideki Ohata
  • Patent number: 7025795
    Abstract: An electrode for electrolytic capacitors having a large capacitance and having excellent tan ?, heat resistance, humidity resistance and stability. An electrolytic capacitor using the electrode. An electrode obtained by attaching a compound having a siloxane bond onto the surface of an electrode body comprising a valve-acting metal having formed thereon a dielectric film. The compound having a siloxane bond is attached by coating, dipping or vapor deposition. A solid electrolytic capacitor obtained by forming an electrolyte comprising an electrically conducting polymer on the electrode.
    Type: Grant
    Filed: October 2, 2002
    Date of Patent: April 11, 2006
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Ryuji Monden, Atsushi Sakai, Yuji Furuta, Hideki Ohata
  • Patent number: 6890363
    Abstract: The present invention relates to a solid electrolytic capacitor having a masking structure in which the insulation between the anode part and the cathode part can be ensured without fail, to its production method, to a method for coating a masking agent on a solid electrolytic capacitor substrate, and to an apparatus therefor. According to the present invention, the masking material covers the dielectric film on the metal material having valve action and sufficiently infiltrates into the core metal made of a metal having valve action while the solid electrolyte is masked by the masking material without fail, so that a solid electrolytic capacitor can be produced that has a reduced leakage current and a reduced stress generated at the reflow treatment or the like.
    Type: Grant
    Filed: May 24, 2000
    Date of Patent: May 10, 2005
    Assignee: Showa Denko K.K.
    Inventors: Atsushi Sakai, Ryuji Monden, Hiroshi Nitoh, Toshihiro Okabe, Yuji Furuta, Hideki Ohata, Koro Shirane
  • Publication number: 20040233615
    Abstract: The present invention relates to a solid electrolytic capacitor having a masking structure in which the insulation between the anode part and the cathode part can be ensured without fail, to its production method, to a method for coating a masking agent on a solid electrolytic capacitor substrate, and to apparatus therefore. According to the present invention, the masking material covers the dielectric film on the metal material having valve action and sufficiently infiltrates into the core metal made of a metal having valve action while the solid electrolyte is masked by the masking material without fail, so that a solid electrolytic capacitor can be produced that has a reduced leakage current and a reduced stress generated at the reflow treatment or the like.
    Type: Application
    Filed: June 28, 2004
    Publication date: November 25, 2004
    Applicant: SHOWA DENKO K.K.
    Inventors: Atsushi Sakai, Ryuji Monden, Hiroshi Nitoh, Toshihiro Okabe, Yuji Furuta, Hideki Ohata, Koro Shirane
  • Publication number: 20040212951
    Abstract: The present invention relates to a solid electrolytic capacitor comprising a solid electrolyte layer and an electrically conducting layer comprising metallic powder or an electrically conducting layer comprising an electrically conducting carbon layer and a layer formed thereon and comprising metallic powder in which at least one of said layers contains a rubber-like elastic material; a production process thereof; a solid electrolyte for use in the solid electrolytic capacitor; a production process of the solid electrolyte; an electrically conducting paste for use in the solid electrolytic capacitor; and an electrically carbon conducting paste for use in the solid electrolytic capacitor. The solid electrolytic capacitor of the present invention can be made compact and can be endowed with high-capacitance and low-impedance and is excellent in external force-relaxing properties, productivity, heat resistance and moisture resistance, etc.
    Type: Application
    Filed: May 18, 2004
    Publication date: October 28, 2004
    Applicant: SHOWA DENKO K.K.
    Inventors: Ryuji Monden, Katsuhiko Yamazaki, Atsushi Sakai, Yuji Furuta, Hideki Ohata, Koro Shirane, Hiroshi Konuma
  • Patent number: 6807049
    Abstract: A solid electrolytic capacitor includes a valve acting metal having microfine pores, a dielectric film formed on a surface of the valve acting metal, and a solid electrolyte layer provided on the dielectric film, in which at least a portion of the solid electrolyte layer is of a lamellar structure. In particular, a solid electrolytic capacitor includes an electrically conducting polymer having a specified condensed ring structure containing (1) a solid electrolyte layer containing a sulfoquinone anion having a sulfo anion group and a quinone structure and other anion, and (2) a solid electrolyte layer containing an anthracenesulfonate ion and other anion.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: October 19, 2004
    Assignee: Showa Denko K.K.
    Inventors: Hiroshi Konuma, Koro Shirane, Ryuji Monden, Atsushi Sakai, Yuji Furuta, Katsuhiko Yamazaki, Toru Sawaguchi, Hideki Ohata, Yoshiaki Ikenoue