Patents by Inventor Hiroshi Nitoh

Hiroshi Nitoh 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: 7617595
    Abstract: The present invention relates to an apparatus for producing a comb-like capacitor element member including a guide member and a plurality of rectangular metal foil pieces bonded to the guide member, comprising an automatic feed mechanism for feeding tape-like metal foil by a constant length toward the guide member, a bonding mechanism for bonding the metal foil to the guide member, and a cutting mechanism for cutting the bonded metal foil. According to the apparatus of the present invention, a comb-like capacitor element member having a plurality of rectangular metal foil pieces bonded can be produced efficiently, by bonding the elongated tape-like metal foil without damaging it.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: November 17, 2009
    Assignee: Showa Denko K.K.
    Inventors: Hiroshi Nitoh, Toshihiro Okabe, Kenji Ishii, Atsushi Sakai
  • Publication number: 20080216308
    Abstract: The present invention relates to an apparatus for producing a comb-like capacitor element member including a guide member and a plurality of rectangular metal foil pieces bonded to the guide member, comprising an automatic feed mechanism for feeding tape-like metal foil by a constant length toward the guide member, a bonding mechanism for bonding the metal foil to the guide member, and a cutting mechanism for cutting the bonded metal foil. According to the apparatus of the present invention, a comb-like capacitor element member having a plurality of rectangular metal foil pieces bonded can be produced efficiently, by bonding the elongated tape-like metal foil without damaging it.
    Type: Application
    Filed: May 9, 2008
    Publication date: September 11, 2008
    Inventors: Hiroshi Nitoh, Toshihiro Okabe, Kenji Ishit, Atsushi Sakai
  • Patent number: 7398593
    Abstract: The present invention relates to an apparatus for producing a comb-like capacitor element member including a guide member and a plurality of rectangular metal foil pieces bonded to the guide member, comprising an automatic feed mechanism for feeding tape-like foil by a constant lenght toward the guide member, a bonding mechanism for bonding the metal foil to the guide member, and a cutting mechanism for cutting the bonded metal foil. According to the apparatus of the present invention, a comb-like capacitor element member having a plurality of rectangular metal foil pieces bonded can be produced efficiently, by bonding the elongated tape-like metal foil without damaging it.
    Type: Grant
    Filed: August 31, 2001
    Date of Patent: July 15, 2008
    Assignee: Showa Denko K.K.
    Inventors: Hiroshi Nitoh, Toshihiro Okabe, Kenji Ishii, Atsushi Sakai
  • 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
  • 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
  • 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
  • Patent number: 6706078
    Abstract: A solid electrolytic capacitor is obtained by mounting a plurality of single plate capacitor elements within a chip by employing a stacking structure such as parallel stacking, opposing stacking, each layer-opposing stacking or closest stacking. As a result, a compact and high-capacitance element can be easily manufactured. The single plate capacitor element is preferably an element having an unfolded fan-like shape.
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: March 16, 2004
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Hiroshi Nitoh, Atsushi Sakai, Wataru Minamida, Yuji Furuta
  • Patent number: 6661645
    Abstract: A solid electrolytic capacitor comprising a capacitor element comprising a valve-acting metal substrate having on the surface thereof a dielectric film and a solid electrolytic layer provided on the dielectric film, the capacitor element provided with lead wires (lead frames), in which the bonding structure between the capacitor element and the lead frames is improved. The solid electrolytic capacitor has high strength at the bonded portion between the capacitor element and the lead frames and has excellent heat resistance and is highly reliable. Also, a method for manufacturing such a solid electrolytic capacitor is disclosed.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: December 9, 2003
    Assignee: Showa Denko K.K.
    Inventors: Atsushi Sakai, Takashi Ichimura, Hiroshi Nitoh, Naoki Kawamura
  • Publication number: 20030156376
    Abstract: The present invention relates to an apparatus for producing a comb-like capacitor element member including a guide member and a plurality of rectangular metal foil pieces bonded to the guide member, comprising an automatic feed mechanism for feeding tape-like foil by a constant lenght toward the guide member, a bonding mechanism for bonding the metal foil to the guide member, and a cutting mechanism for cutting the bonded metal foil. According to the apparatus of the present invention, a comb-like capacitor element member having a plurality of rectangular metal foil pieces bonded can be produced efficiently, by bonding the elongated tape-like metal foil without damaging it.
    Type: Application
    Filed: March 3, 2003
    Publication date: August 21, 2003
    Inventors: Hiroshi Nitoh, Toshihiro Okabe, Kenji Ishii, Atsushi Sakai
  • Publication number: 20020141141
    Abstract: A solid electrolytic capacitor is obtained by mounting a plurality of single plate capacitor elements within a chip by employing a stacking structure such as parallel stacking, opposing stacking, each layer-opposing stacking or closest stacking. As a result, a compact and high-capacitance element can be easily manufactured. The single plate capacitor element is preferably an element having an unfolded fan-like shape.
    Type: Application
    Filed: March 13, 2002
    Publication date: October 3, 2002
    Applicant: SHOWA DENKO K.K.
    Inventors: Hiroshi Nitoh, Atsushi Sakai, Wataru Minamida, Yuji Furuta
  • Patent number: 6421227
    Abstract: A solid electrolytic capacitor is obtained by mounting a plurality of single plate capacitor elements within a chip by employing a stacking structure such as parallel stacking, opposing stacking, each layer-opposing stacking or closest stacking. As a result, a compact and high-capacitance element can be easily manufactured. The single plate capacitor element is preferably an element having an unfolded fan-like shape.
    Type: Grant
    Filed: December 11, 2000
    Date of Patent: July 16, 2002
    Assignee: Showa Denko K.K.
    Inventors: Hiroshi Nitoh, Atsushi Sakai, Wataru Minamida, Yuji Furuta
  • Publication number: 20020015277
    Abstract: A solid electrolytic capacitor is obtained by mounting a plurality of single plate capacitor elements within a chip by employing a stacking structure such as parallel stacking, opposing stacking, each layer-opposing stacking or closest stacking. As a result, a compact and high-capacitance element can be easily manufactured. The single plate capacitor element is preferably an element having an unfolded fan-like shape.
    Type: Application
    Filed: December 11, 2000
    Publication date: February 7, 2002
    Inventors: Hiroshi Nitoh, Atsushi Sakai, Wataru Minamida, Yuji Furuta
  • Patent number: 6249424
    Abstract: The present invention provides a solid electrolytic multilayer capacitor excellent in yield and capability, and provides a monolayer capacitor element for use in the manufacture of the solid electrolytic multilayer capacitor. In the multilayer solid electrolyte capacitor of the present invention, a solid electrolytic multilayer capacitor 25 in which a plurality of monolayer capacitor elements 7 are stacked such that the anode areas 11 aligned in the same direction are stacked and bonded onto a lead frame 9 on the anode side and the cathode areas are stacked and bonded onto a lead frame 8 on the cathode side so as to have an unfolded fan shape widening toward the distal end of the cathode area from the anode area 11 side, to provide a multilayer capacitor element 19 and the periphery of the multilayer capacitor element 19 that are covered and sealed with an armoring resin 23.
    Type: Grant
    Filed: November 4, 1999
    Date of Patent: June 19, 2001
    Assignee: Showa Denko K.K.
    Inventors: Hiroshi Nitoh, Wataru Minamida, Atsushi Sakai, Takashi Ichimura