Patents by Inventor Toshio Narita

Toshio Narita 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: 6998035
    Abstract: Disclosed is a method for forming a Re—Cr alloy film consisting of Re in the range of 60 to 90% by atomic composition. The method comprises performing an electroplating process using an electroplating bath containing an aqueous solution which includes a perrhenate ion and a chromium (VI) ion. The present invention allows a Re—Cr alloy film usable as a corrosion-resistant alloy coating for a high-temperature component or the like to be formed through an electroplating process using an aqueous solution, so as to provide heat/corrosion resistances to the component, even if it has a complicated shape, in a simplified manner at a low cost.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: February 14, 2006
    Assignees: Japan Science And Technology Agency, Ebara Corporation, Sapporo Electroplating Industrial Co., Ltd.
    Inventors: Toshio Narita, Shigenari Hayashi, Takayuki Yoshioka, Hiroshi Yakuwa, Michiaki Souma
  • Publication number: 20050287388
    Abstract: Discloses is a metal-based resistance heat-generation element. The element comprises a core made of a platinum group metal or refractory metal, and a coating film formed on the core. The coating film has at least two layers including a core-side inner layer of a Re—Cr based ? (sigma) phase and a surface-side outermost layer of an aluminide or silicide. Alternatively, the element may comprise a core made of an alloy containing a platinum group metal or refractory metal and Re and Cr diffused therein, and a coating film formed on the core. The coating film has at least one layer including an aluminide or silicide layer.
    Type: Application
    Filed: June 30, 2003
    Publication date: December 29, 2005
    Inventor: Toshio Narita
  • Patent number: 6979392
    Abstract: Disclosed is a method for forming: a Re—Cr alloy film consisting of Re in the range of greater than 0 (zero) to less than 98% by atomic composition, and the remainder being Cr except inevitable impurities; a Re-based film consisting of 98% or more, by atomic composition, of Re, with the remainder being Cr and inevitable impurities; or a Re—Cr—Ni alloy film consisting of Re in the range of 50 to less than 98% by atomic composition, Cr in the range of 2 to less than 45% by atomic composition, and the remainder being Ni except inevitable impurities. The method comprises performing an electroplating process using an electroplating bath containing an aqueous solution which includes a perrhenate ion and a chromium (III) ion.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: December 27, 2005
    Assignees: Japan Science and Technology Agency, Ebara Corporation, Sapporo Electroplating Industrial, Co., Ltd.
    Inventors: Toshio Narita, Shigenari Hayashi, Takayuki Yoshioka, Hiroshi Yakuwa, Michiaki Souma
  • Publication number: 20050244668
    Abstract: Disclosed is a heat-resistant Ti alloy material excellent in high-temperature corrosion resistance and oxidation resistance, which comprises a base made of a heat-resistant Ti alloy and a surface layer formed on the surface of the base. The surface layer has a multilayer structure including an inner layer and an outer layer. The inner layer has three coexistent phases consisting of a ? phase, a ? phase and a Laves phase in the phase diagram of a Ti—Al—Cr based alloy, and the outer layer is made of an Al—Ti—Cr based alloy having an Al concentration of 50 atomic % or more.
    Type: Application
    Filed: March 25, 2003
    Publication date: November 3, 2005
    Inventors: Toshio Narita, Takumi Nishimoto
  • Publication number: 20050189230
    Abstract: Disclosed is a method for forming a high-Re-content alloy film, such as a Re-based film containing Re at 98% or more by atomic composition, or an alloy film containing Re in the range of 65 to less than 98% by atomic composition and at least one of Ni, Fe and Co. The method comprises performing an electroplating process using an electroplating bath containing an aqueous solution which includes a perrhenate ion, at least one ion selected from the group consisting of Ni, Fe, Co and Cr ions, and at least one of a Li ion and a Na ion. The present invention allows a high-Re-content alloy film usable as a corrosion-resistant alloy coating for a high-temperature component or the like to be formed through an electroplating process using an aqueous solution, so as to provide heat/corrosion resistances to the component, even if it has a complicated shape, in a simplified manner at a low cost.
    Type: Application
    Filed: January 17, 2003
    Publication date: September 1, 2005
    Inventors: Toshio Narita, Shigenari Hayashi, Takayuki Yoshioka, Hiroshi Yakuwa, Michiaki Souma, Michihisa Fukumoto
  • Publication number: 20050167282
    Abstract: Disclosed is a method for forming a Re—Cr alloy film consisting of Re in the range of 60 to 90% by atomic composition. The method comprises performing an electroplating process using an electroplating bath containing an aqueous solution which includes a perrhenate ion and a chromium (IV) ion. The present invention allows a Re—Cr alloy film usable as a corrosion-resistant alloy coating for a high-temperature component or the like to be formed through an electroplating process using an aqueous solution, so as to provide heat/corrosion resistances to the component, even if it has a complicated shape, in a simplified manner at a low cost.
    Type: Application
    Filed: January 17, 2003
    Publication date: August 4, 2005
    Inventors: Toshio Narita, Shigenari Hayashi, Takayuki Yoshioka, Hiroshi Yakuwa, Michiaki Souma
  • Publication number: 20050153161
    Abstract: A composite resistive to high-temperature corrosion and abnormal oxidization, maintains original excellent high-temperature characteristics of Ni alloys over a long period of time, and suitable for applications in a high-temperature such as gas turbines, jet engines, and elements for exhaust-gas systems. A heat-resistant Ni-alloy composite has excellent high-temperature oxidation resistance, including a Ni-alloy substrate that has been subjected to an Al-diffusing treatment. The surface coat has a multi-layer structure including an inner layer composed of an ?-Cr phase and an outer layer composed of a ? phase (Ni—Al—Cr) and a ?? phase (Ni3Al(Cr)) on the substrate surface. The Al content in the outer layer is at least 20 atomic percent. The ?-Cr phase functions as a diffusion-barrier layer. The outer layer retains and secures a high Al content required for self-regeneration of a defective portion of the Al2O3 layer damaged in an operating condition.
    Type: Application
    Filed: March 5, 2003
    Publication date: July 14, 2005
    Inventors: Toshio Narita, Daisuke Yoshida
  • Publication number: 20050126922
    Abstract: Disclosed is a method for forming: a Re—Cr alloy film consisting of Re in the range of greater than 0 (zero) to less than 98% by atomic composition, and the remainder being Cr except inevitable impurities; a Re-based film consisting of 98% or more, by atomic composition, of Re, with the remainder being Cr and inevitable impurities; or a Re—Cr—Ni alloy film consisting of Re in the range of 50 to less than 98% by atomic composition, Cr in the range of 2 to less than 45% by atomic composition, and the remainder being Ni except inevitable impurities. The method comprises performing an electroplating process using an electroplating bath containing an aqueous solution which includes a perrhenate ion and a chromium (III) ion.
    Type: Application
    Filed: January 17, 2003
    Publication date: June 16, 2005
    Inventors: Toshio Narita, Shigenari Hayashi, Takayuki Yoshioka, Hiroshi Yakuwa, Michiaki Souma
  • Patent number: 6899926
    Abstract: Disclosed is an alloy coating which can be advantageously applied to members for high temperature apparatuses so as to prolong the service life of the members. The alloy coating comprises an alloy. This alloy comprises: at least one member, as a base, selected from the group consisting of Re, Ir, Nb, Ta, Mo, and W; and at least one alloying element for imparting corrosion resistance. A method for forming the alloy coating, and a member for high temperature apparatuses, to which the alloy coating has been applied, are also disclosed.
    Type: Grant
    Filed: May 6, 2004
    Date of Patent: May 31, 2005
    Assignees: EBARA Corporation
    Inventors: Toshio Narita, Shigenari Hayashi, Hiroshi Yakuwa, Manabu Noguchi, Matsuho Miyasaka
  • Publication number: 20050079089
    Abstract: Disclosed is an alloy coating which can be advantageously applied to members for high temperature apparatuses so as to prolong the service life of the members. The alloy coating comprises an alloy. This alloy comprises: at least one member, as a base, selected from the group consisting of Re, Ir, Nb, Ta, Mo, and W; and at least one alloying element for imparting corrosion resistance. A method for forming the alloy coating, and a member for high temperature apparatuses, to which the alloy coating has been applied, are also disclosed.
    Type: Application
    Filed: May 6, 2004
    Publication date: April 14, 2005
    Applicants: EBARA CORPORATION, TOSHIO NARITA
    Inventors: Toshio Narita, Shigenari Hayashi, Hiroshi Yakuwa, Manabu Noguchi, Matsuho Miyasaka
  • Publication number: 20050064227
    Abstract: Disclosed is a Re alloy coating for diffusion barrier, such as a high-temperature equipment member, which comprises an atomic composition of 30% to less than 90% Re; and an atomic composition of 5% to less than 60% X (wherein X is at least one selected from the group consisting of Cr, Mo and W), with the remainder except for inevitable impurities being at least one selected from the group consisting of Ni, Fe and Co. Even if the alloy coating for diffusion barrier includes a diffusion layer containing at least one of the group consisting of Al, Si and Cr, a desired alloy composition of the alloy coating for diffusion barrier can be assured by a surface coating process and diffused components from the substrate while substantially preventing the diffusion of the elements of the diffusion layer during a homogenizing heat treatment. The alloy coating for diffusion barrier may include a Re-containing-alloy stress relief layer inserted between the film and the substrate.
    Type: Application
    Filed: September 13, 2002
    Publication date: March 24, 2005
    Inventors: Toshio Narita, Shigenari Hayashi, Takayuki Yoshioka, Hiroshi Yakuwa
  • Publication number: 20050037222
    Abstract: Disclosed is a ReCrNi alloy coating for diffusion barrier, such as a high-temperature equipment member, consisting essentially of a ternary alloy and having, except for inevitable impurities, an atomic composition of 20 % to 80 % Re, an atomic composition of 20 % to 60 % Cr, and an atomic composition of 5 % to 40 % Ni. Even if the alloy coating for diffusion barrier includes a diffusion layer containing at least one of the group consisting of Al, Si and Cr, a desired alloy composition of the alloy coating for diffusion barrier can be assured by a surface coating process and diffused components from the substrate while substantially preventing the diffusion of the elements of the diffusion layer during a homogenizing heat treatment. The alloy coating for diffusion barrier may include a Re-containing-alloy stress relief layer inserted between the film and the substrate.
    Type: Application
    Filed: September 13, 2002
    Publication date: February 17, 2005
    Inventors: Toshio Narita, Shigenari Hayashi, Takayuki Yoshioka, Hiroshi Yakuwa
  • Publication number: 20050031893
    Abstract: Disclosed is a ReCr alloy coating for diffusion barrier formed on a substrate, such as a high-temperature equipment member, which comprises an atomic composition of 50% to less than 90% Re, with the remainder consisting essentially of Cr except for inevitable impurities. Even if the alloy coating for diffusion barrier includes a diffusion layer containing at least one of the group consisting of Al, Si and Cr, a desired alloy composition of the alloy coating for diffusion barrier can be assured by a surface coating process and diffused components from the substrate while substantially preventing the diffusion of the elements of the diffusion layer during a homogenizing heat treatment. The alloy coating for diffusion barrier may include a Re-containing-alloy stress relief layer inserted between the film and the substrate. The ReCr—Ni alloy coating can suppress the deterioration of the substrate and the coating layer due to the reaction therebetween to provide an extended life span of the equipment member.
    Type: Application
    Filed: September 13, 2002
    Publication date: February 10, 2005
    Inventors: Toshio Narita, Shigenari Hayashi, Takayuki Yoshioka, Hiroshi Yakuwa
  • Patent number: 6830827
    Abstract: Disclosed is an alloy coating which can be advantageously applied to members for high temperature apparatuses so as to prolong the service life of the members. The alloy coating comprises an alloy. This alloy comprises: at least one member, as a base, selected from the group consisting of Re, Ir, Nb, Ta, Mo, and W; and at least one alloying element for imparting corrosion resistance. A method for forming the alloy coating, and a member for high temperature apparatuses, to which the alloy coating has been applied, are also disclosed.
    Type: Grant
    Filed: March 6, 2001
    Date of Patent: December 14, 2004
    Assignees: Ebara Corporation
    Inventors: Toshio Narita, Shigenari Hayashi, Hiroshi Yakuwa, Manabu Noguchi, Matsuho Miyasaka
  • Publication number: 20010026877
    Abstract: Disclosed is an alloy coating which can be advantageously applied to members for high temperature apparatuses so as to prolong the service life of the members. The alloy coating comprises an alloy. This alloy comprises: at least one member, as a base, selected from the group consisting of Re, Ir, Nb, Ta, Mo, and W; and at least one alloying element for imparting corrosion resistance. A method for forming the alloy coating, and a member for high temperature apparatuses, to which the alloy coating has been applied, are also disclosed.
    Type: Application
    Filed: March 6, 2001
    Publication date: October 4, 2001
    Applicant: EBARA CORPORATION
    Inventors: Toshio Narita, Shigenari Hayashi, Hiroshi Yakuwa, Manabu Noguchi, Matsuho Miyasaka
  • Patent number: 5900078
    Abstract: A high-temperature sulfidation-corrosion resistant nickel-base alloy includes 12.about.15 weight % of cobalt, 18.about.21 weight % of chromium, 3.5.about.5 weight % of molybdenum, 0.02.about.0.1 weight % of carbon, at most 2.75 weight % of titanium, and at least 1.6 weight % of aluminum. The remainder is essentially of nickel except for impurities. The high-temperature sulfidation-corrosion resistant nickel-base alloy has sufficient high-temperature strength and is highly resistant to a high-temperature sulfidation corrosion.
    Type: Grant
    Filed: February 14, 1997
    Date of Patent: May 4, 1999
    Assignee: Ebara Corporation
    Inventors: Hiroshi Yakuwa, Matsuho Miyasaka, Toshio Narita, Shuhei Nakahama, Masamichi Kawasaki
  • Patent number: 5604522
    Abstract: An ink jet head for forcibly discharging ink droplets 6a through nozzle openings 13a in a manner that a pressure of ink 6 within an ink chamber 22 is increased by displacing a vibrating plate 20 constituting a part of the ink chamber 22 by a piezoelectric transducer 1, in which said vibrating plate 20 is formed of a high polymeric resin thin film 20a and rigid protrusions 20b directly fastened to said high polymeric resin thin film 20b.
    Type: Grant
    Filed: April 14, 1994
    Date of Patent: February 18, 1997
    Assignee: Seiko Epson Corporation
    Inventors: Kazuhiko Miura, Toshio Narita
  • Patent number: 5474611
    Abstract: A plasma vapor deposition apparatus which can form high-quality films of ITO, for example, with high productivity, includes a vapor deposition chamber, a drive and a horizontally rotating circular holding plate connected to the drive located in a lower portion of the chamber, the circular holding plate having a circular vapor source material mounting centered at the rotational axis about which the plate is rotated by the drive, and coil-shaped electrodes for exciting vapor produced by evaporating the vapor source material. A film thickness correcting plate is interposed between the holding plate and the path along which the substrate is transported through the chamber by a transporting device. This plate is configured to so shield a portion of the substrate so that an excess of excited vapor particles do not accumulate at a given site on the surface of the substrate.
    Type: Grant
    Filed: August 22, 1994
    Date of Patent: December 12, 1995
    Assignees: Yoichi Murayama, Shincron Co., Ltd., C. Itoh Fine Chemical Co., Ltd.
    Inventors: Yoichi Murayama, Toshio Narita
  • Patent number: 5252994
    Abstract: An ink-jet recording head, in which two piezoelectric substrates are opposite each other in polarization direction, and grooves are formed across the interface of the two substrates at a predetermined pitch so as to form cavities. One of each of the cavities is opened to the atmosphere and include an orifice adapted for squirting ink drops. The cavities have electrodes formed on their inner surfaces. When a voltage of one polarity is applied to the electrode for the cavity from which ink drops is to be generated whereas a voltage of the other polarity is applied to the electrodes for the two adjacent cavities, the diaphragms separating the three cavities deform in a shear mode towards the cavity from which ink drops is to be generated. As a result, the capacity of the cavity from which ink drops is to be generated decreases to have the ink in the cavity squirt outward from the orifice.
    Type: Grant
    Filed: November 8, 1991
    Date of Patent: October 12, 1993
    Assignee: Seiko Epson Corporation
    Inventors: Toshio Narita, Shinri Sakai, Masaru Hoshino, Yoshiko Tatsuzawa
  • Patent number: 5231420
    Abstract: A thermal print head comprises: a thermally resistant insulating substrate; a glazed glass partially formed on the substrate at one end side thereof; a heating element formed on the glazed glass; a first common electrode formed on the heating element; and a protective film formed on the first electrode; a second common electrode a part of which is formed between the insulating substrate and the glazed glass, the first and second electrodes being connected to each other; wherein the insulating substrate has a chamfer on the one end side where the first and second common electrodes are arranged, the chamfer being formed closely from the glazed glass, a part of the first and second common electrode being arranged on the chamfer.
    Type: Grant
    Filed: April 25, 1990
    Date of Patent: July 27, 1993
    Assignee: Seiko Epson Corporation
    Inventors: Yoshikatsu Yamamoto, Yoshinao Miyata, Toshio Narita