Patents by Inventor Hiromu Saito

Hiromu Saito 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: 7428139
    Abstract: A solid electrolytic capacitor (1) comprises a capacitor element (2) which includes an anode foil (4) and a cathode foil (5) rolled with a separator (6) interposed therebetween, and a solid electrolyte layer or an electrically conductive polymer layer provided therein. The cathode foil (5) is coated with a film of a titanium-containing composite metals nitride. The composite metals nitride is aluminum titanium nitride, chromium titanium nitride, or zirconium titanium nitride.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: September 23, 2008
    Assignees: Sanyo Electric Co., Ltd., Saga Sanyo Industries Co., Ltd., Japan Capacitor Industrial Co., Ltd.
    Inventors: Kazumasa Fujimoto, Satoru Yoshimitsu, Yasushi Yoshida, Hiromu Saito
  • Patent number: 7391604
    Abstract: A solid electrolytic capacitor having a capacitor element which includes an anode foil and a cathode foil rolled with a separator interposed therebetween, and a solid electrolyte layer or an electrically conductive polymer layer provided therein. The anode foil is coated with a dielectric oxide film. The dielectric oxide film is an oxide film formed by oxidizing a film of a mono-metal nitride or a composite metal nitride formed on the anode foil. The mono-metal nitride is titanium nitride, zirconium nitride, tantalum nitride or niobium nitride. The composite metal nitride is aluminum titanium nitride, chromium titanium nitride, zirconium titanium nitride or titanium carbonitride.
    Type: Grant
    Filed: February 16, 2004
    Date of Patent: June 24, 2008
    Assignees: Sanyo Electric Co., Ltd., Saga Sanyo Industries Co., Ltd., Japan Capacitor Industrial Co., Ltd.
    Inventors: Satoru Yoshimitsu, Kazumasa Fujimoto, Hiromu Saito, Yasushi Yoshida
  • Publication number: 20070115613
    Abstract: A solid electrolytic capacitor comprises a capacitor element which includes an anode foil and a cathode foil rolled with a separator interposed therebetween, and a solid electrolyte layer or an electrically conductive polymer layer provided therein. The cathode foil is coated with a film of a titanium-containing compound metal nitride. The compound metal nitride is aluminum titanium nitride, chromium titanium nitride, zirconium titanium nitride or titanium carbonitride.
    Type: Application
    Filed: November 14, 2006
    Publication date: May 24, 2007
    Applicants: Sanyo Electric Co., Ltd., Saga Sanyo Industries Co., Ltd., Japan Capacitor Industrial Co., Ltd.
    Inventors: Kazumasa Fujimoto, Satoru Yoshimitsu, Yasushi Yoshida, Hiromu Saito
  • Patent number: 7158367
    Abstract: A solid electrolytic capacitor (1) comprises a capacitor element (2) which includes an anode foil (4) and a cathode foil (5) rolled with a separator (6) interposed therebetween, and a solid electrolyte layer or an electrically conductive polymer layer provided therein. The cathode foil (5) is coated with a film of a titanium-containing compound metal nitride. The compound metal nitride is aluminum titanium nitride, chromium titanium nitride, or zirconium titanium nitride.
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: January 2, 2007
    Assignees: Sanyo Electric Co., Ltd., Saga Sanyo Industries Co., Ltd., Japan Capacitor Industrial Co., Ltd.
    Inventors: Kazumasa Fujimoto, Satoru Yoshimitsu, Yasushi Yoshida, Hiromu Saito
  • Publication number: 20060180474
    Abstract: The invention provides a solid electrolytic capacitor wherein the anode has a dielectric oxide film of a structure less susceptible to damage due to mechanical stresses and which is diminished in leakage current and less prone to short-circuiting, and a process for fabricating the capacitor. The capacitor of the invention comprises an anode of aluminum having a dielectric oxide film formed over a surface thereof from amorphous alumina, and is characterized in that a plurality of tunnel-shaped etching pits are formed in the anode.
    Type: Application
    Filed: February 7, 2006
    Publication date: August 17, 2006
    Applicants: SANYO ELECTRIC CO., LTD., SAGA SANYO INDUSTRIES CO., LTD., JAPAN CAPACITOR INDUSTRIAL CO., LTD.
    Inventors: Kazumasa Fujimoto, Hiromu Saito, Yasushi Yoshida, Yukio Takeda
  • Publication number: 20060146474
    Abstract: A solid electrolytic capacitor comprises a capacitor element which includes an anode foil and a cathode foil rolled with a separator interposed therebetween, and a solid electrolyte layer or an electrically conductive polymer layer provided therein. The anode foil is coated with a dielectric oxide film. The dielectric oxide film is an oxide film formed by oxidizing a film of a mono-metal nitride or a composite metal nitride formed on the anode foil. The mono-metal nitride is titanium nitride, zirconium nitride, tantalum nitride or niobium nitride. The composite metal nitride is aluminum titanium nitride, chromium titanium nitride, zirconium titanium nitride or titanium carbonitride.
    Type: Application
    Filed: February 16, 2004
    Publication date: July 6, 2006
    Applicants: Sanyo Electric Co., LTD, SAGA SANYO INDUSTRIES CO., LTD, JAPAN CAPACITOR INDUSTRIAL CO., LTD
    Inventors: Satoru Yoshimitsu, Kazumasa Fujimoto, Hiromu Saito, Yasushi Yoshida
  • Publication number: 20060025490
    Abstract: A resin composition containing thermoplastic resin and a flame retardant is sufficiently kneaded and molded, and carbon dioxide in a supercritical state is caused to permeate into the resin composition. Subsequently, the resin composition is degassed by cooling and/or pressure reduction. As a result of degassing, a resin foam body having a fine and uniform micro-cellular foam structure is obtained. The resin foam body has a cyclic structure in which a resin phase and a pore phase are continuous and intertwined. The obtained resin foam body can suitably find applications such as home OA parts, electric and electronic parts and automobile parts that are required to be highly strong, lightweight and nonflammable.
    Type: Application
    Filed: September 29, 2005
    Publication date: February 2, 2006
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Hiromu Saito, Takafumi Oda, Hiroshi Kawato, Toshitaka Kanai, Nobuhiro Watanabe, Takehito Konakazawa
  • Publication number: 20060018078
    Abstract: A solid electrolytic capacitor comprises a capacitor element which includes an anode foil and a cathode foil rolled with a separator interposed therebetween, and a solid electrolyte layer or an electrically conductive polymer layer provided therein. The cathode foil is coated with a film of a titanium-containing compound metal nitride. The compound metal nitride is aluminum titanium nitride, chromium titanium nitride, zirconium titanium nitride or titanium carbonitride.
    Type: Application
    Filed: November 17, 2003
    Publication date: January 26, 2006
    Applicants: Sanyo Electric Co., Ltd., Saga Sanyo Industries Co., Ltd., Japan Capacitor Industrial co., Ltd.
    Inventors: Kazumasa Fujimoto, Satoru Yoshimitsu, Yasushi Yoshida, Hiromu Saito
  • Publication number: 20040220289
    Abstract: A resin composition containing thermoplastic resin and a flame retardant is sufficiently kneaded and molded and carbon dioxide in a supercritical state is caused to permeate into it. Subsequently, the resin composition is degassed by cooling and/or pressure reduction. As a result of degassing, a resin foam body 1 having a fine and uniform micro-cellular foam structure is obtained. The resin foam body 1 has a cyclic structure in which a resin phase 2 and a pore phase 3 are continuous and intertwined. The obtained resin foam body 1 can suitably find applications such as home OA parts, electric and electronic parts and automobile parts that are required to be highly strong, lightweight and nonflammable.
    Type: Application
    Filed: January 23, 2004
    Publication date: November 4, 2004
    Inventors: Hiromu Saito, Takafumi Oda, Hiroshi Kawato, Toshitaka Kanai, Nobuhiro Watanabe, Takehito Konakazawa
  • Publication number: 20040204528
    Abstract: The present invention provides a composite resin composition comprises A) polypropylene-based resin by 100 weight portions, (B) organized denatured clay by 0.1 to 50 weight portions, and (C) maleic anhydride denatured polypropylene by 0.5 to 30 weight portions, in which the maleic anhydride denatured polypropylene satisfies the following conditions that the quantity of not-reacted maleic anhydride is outside a limit for quantitative analysis; that the percentage of acid content against a number of polymer chains is not less than 0.8 and not more than 2.0; that the molecular weight distribution is not less than 2.5; that the percentage of components with the molecular weight of 10,000 or less is not more than 0.5% by weight; and that the ultimate viscosity (&eegr;) is 1 or more. A supercritical gas is infiltrated in this composite resin composition for degassing to obtain resin foam. With the operations above, bubbles are formed finely and homogeneously at the high density and high solidity is provided.
    Type: Application
    Filed: May 17, 2004
    Publication date: October 14, 2004
    Inventors: Hiromu Saito, Takafumi Oda, Toshiya Abiko, Kazuhiko Ito, Mitsugu Kanzawa, Tomio Tatsumi, Hiroshi Kawato, Manabu Nomura, Takehito Konakazawa
  • Publication number: 20040198853
    Abstract: Carbon dioxide in a supercritical state is caused to permeate into a resin composition formed by sufficiently kneading a thermoplastic copolymer having a polysiloxane structure at recurring units. Subsequently, the resin composition is degassed by cooling and/or pressure reduction. As a result of degassing, a resin foam body 1 having a fine and uniform micro-cellular foam structure is obtained. The resin foam body 1 has a cyclic structure in which a resin phase 2 and a pore phase 3 are continuous and intertwined. The resin foam body 1 shows an excellent reflectivity relative to rays of light and is highly nonflammable, while it is very strong and lightweight.
    Type: Application
    Filed: February 9, 2004
    Publication date: October 7, 2004
    Inventors: Hiromu Saito, Takafumi Oda, Hiroshi Kawato, Toshitaka Kanai, Nobuhiro Watanabe, Takehito Konakazawa