Patents by Inventor Yasuo Takahashi

Yasuo Takahashi 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).

  • Publication number: 20100197506
    Abstract: This invention provides a tape-shaped oxide superconductor which can prevent the diffusion of elements constituting a metallic substrate into a superconducting layer and cracking of an intermediate layer and improve the orientation of the superconducting layer. A 15 to 100 nm-thick Ce—Gd—O-based oxide layer (2) (Ce:Gd=40:60 to 70:30 molar ratio) as a first intermediate layer and a 100 nm-thick Ce—Zr—O-based oxide layer (3) (Ce:Zr=50:50 molar ratio) as a second intermediate layer are formed by an MOD method on an Ni-base alloy substrate (1) having a half value width (FMHW: ??) of 6.5 degrees. A 150 nm-thick CeO2 oxide layer (4) as a third intermediate layer is further formed on the second intermediate layer by an RF sputtering method. A 1 ?m-thick YBCO superconducting layer (5) is formed by a TFA-MOD method on the intermediate layer having a three-layer structure. In the tape-shaped oxide superconductor, the ?? values of the first to third intermediate layers are (6.0 to 6.5) degrees, (6.0 to 6.
    Type: Application
    Filed: May 7, 2008
    Publication date: August 5, 2010
    Applicants: SWCC SHOWA CABLE SYSTEMS CO., LTD, INTERNATIONAL SUPERCONDUCTIVITY TECHNOLOGY CENTER, THE JURIDICAL FOUNDATION
    Inventors: Yasuo Takahashi, Tsutomu Koizumi, Yuji Aoki, Atsushi Kaneko, Takayo Hasegawa
  • Publication number: 20100116828
    Abstract: This manufacturing method of a fuel tank is for manufacturing a metallic fuel tank having a concavo-convex portion in a course of seam welding using a seam welder, wherein the seam welding is performed using the seam welder provided with a non-interfering space where interference with the fuel tank is avoided, while changing the position of the fuel tank relative to the seam welder.
    Type: Application
    Filed: June 5, 2008
    Publication date: May 13, 2010
    Inventors: Yasuo Takahashi, Toshinori Mizuguchi, Hirohumi Kondo, Shinji Shiokawa, Yukikazu Takahashi, Nobuhide Suzuki
  • Publication number: 20100102332
    Abstract: A method of forming an Ohmic contact on a P-type 4H—SiC and an Ohmic contact formed by the same are provided. A method of forming an Ohmic contact on a P-type 4H—SiC substrate including a deposition step of successively depositing a 1 to 60 nm thick first Al layer, Ti layer, and second Al layer on a P-type 4H—SiC substrate and an alloying step of forming an alloy layer between the SiC substrate and the Ti layer through the first Al layer by heat treatment in a nonoxidizing atmosphere. An Ohmic contact on a P-type 4H—SiC substrate formed by this method is also provided.
    Type: Application
    Filed: March 13, 2008
    Publication date: April 29, 2010
    Applicants: OSAKA UNIVERSITY, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuo Takahashi, Masakatsu Maeda, Akinori Seki, Akira Kawahashi, Masahiro Sugimoto
  • Publication number: 20100099573
    Abstract: This invention provides a rare earth-type tape-shaped oxide superconductor having excellent mechanical strength and superconducting properties and a composite substrate using for the same. Non-oriented and non-magnetic Ni-9 at % W alloy tapes (11, 21) were bonded onto both sides of a non-oriented and non-magnetic hastelloy tape (100) by a normal temperature bonding process, and an Ni-3 at % W alloy tape (12) having a cubic texture was bonded onto the surface of the tape (11) by a normal temperature bonding process. Thereafter, the heat-treatment was given in a reducing atmosphere and a bonding layer (50a) etc. was formed on the adhesive interface of each layer. Next, a (Ce, Gd) O2 intermediate layer (13) and a Ce2Zr2O7 intermediate layer (14) by an MOD process, a CeO2 intermediate layer (15), a YBCO superconducting film (16) by a TFA-MOD method, and a silver stabilization layer (17) were stacked sequentially on the surface of the tape (12). A critical current value (Ic) of this superconductor showed 150 A.
    Type: Application
    Filed: February 21, 2008
    Publication date: April 22, 2010
    Inventors: Yuji Aoki, Tsutomu Koizumi, Yasuo Takahashi, Atsushi Kaneko, Takayo Hasegawa, Hiroshi Nakamura
  • Patent number: 7662749
    Abstract: On a first intermediate layer provided on a substrate and having an excellent surface smoothness, are formed a second intermediate layer and an YBCO superconductor layer having excellent properties. An YBCO superconductor (10) having a critical current density (Jc) of 1 MA/cm2 or higher can be produced by forming a first intermediate layer (2), a second intermediate layer (3), an YBCO superconductor layer (4) and an Ag-stabilized layer (5) on the surface of a tape-shaped biaxially oriented Ni—W alloy substrate (1), wherein the first intermediate layer (2) has a thickness of 5 nm or less, has a surface smoothness, comprises A2Zr2O7, and is formed by repeating coating and provisional burning several times by the MOD method, the second intermediate layer (3) comprises a CeO2 film and is formed by the pulse plating method, the YBCO superconductor layer (4) is formed by the MOD method, and the Ag-stabilized layer (5) is formed on the YBCO superconductor layer (4).
    Type: Grant
    Filed: January 10, 2007
    Date of Patent: February 16, 2010
    Assignees: International Superconductivity Technology Center, the Juridical Foundation, SWCC Showa Cable Systems Co., Ltd.
    Inventors: Takayo Hasegawa, Yasuo Takahashi
  • Publication number: 20090320438
    Abstract: Provided is a two-shaft gas turbine with improved reliability that improves output power and efficiency and is stably operated by establishing a balance between the driving force of a compressor and the output power of a high-pressure turbine in the case where the two-shaft gas turbine is applied to a system in which the flow rate of fluid flowing into a combustor is increased compared with a simple cycle gas turbine. A portion of working fluid driving the high-pressure turbine is allowed to flow not into the high-pressure turbine but into a low-pressure turbine.
    Type: Application
    Filed: May 15, 2009
    Publication date: December 31, 2009
    Inventors: Tomomi KOGANEZAWA, Shinichi Higuchi, Yasuo Takahashi, Ryo Akiyama, Shinya Marushima
  • Patent number: 7619031
    Abstract: A low-heat accumulating thermoplastic resin composition containing 100 parts by mass of a thermoplastic resin [A] and 0.1 to 15 parts by mass of an inorganic pigment [B] having an infrared-reflecting property, and a molded product comprising the composition. The low-heat accumulating thermoplastic resin composition of the present invention is capable of providing a dark-colored molded product exhibiting a less heat accumulation as well as excellent weather resistance and impact resistance.
    Type: Grant
    Filed: August 6, 2003
    Date of Patent: November 17, 2009
    Assignee: Techno Polymer Co., Ltd.
    Inventors: Yuuichi Kanayama, Kenichi Noguchi, Yasuo Takahashi, Hideyuki Kurimoto
  • Patent number: 7591200
    Abstract: A recovery phenomenon in which the concentration of a compound to be measured in soil increases again after reducing the concentration is utilized for changing the distribution state of the compound to be measured in soil, whereby the direction of the high-concentration region of the compound to be measured in soil can be detected.
    Type: Grant
    Filed: October 24, 2005
    Date of Patent: September 22, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuo Takahashi, Shigekazu Shimizu, Naoya Ichimura, Yasuhisa Fujii, Tokugen Yasuda
  • Publication number: 20090233435
    Abstract: A method is set forth of forming an ohmic electrode having good characteristics on a SiC semiconductor layer. In the method, a Ti-layer and an Al-layer are formed on a surface of the SiC substrate. The SiC substrate having the Ti-layer and the Al-layer is maintained at a temperature that is higher than or equal to a first temperature and lower than a second temperature until all Ti in the Ti-layer has reacted with Al. The first temperature is the minimum temperature of a temperature zone at which the Ti reacts with the Al to form Al3Ti, and the second temperature is the minimum temperature of a temperature zone at which the Al3Ti reacts with SiC to form Ti3SiC2. As a result of this maintaining of temperature step, an Al3Ti-layer is formed on the surface of the SiC substrate. The method also comprises further heating the SiC substrate having the Al3Ti-layer to a temperature that is higher than the second temperature.
    Type: Application
    Filed: September 21, 2007
    Publication date: September 17, 2009
    Inventors: Akira Kawahashi, Masahiro Sugimoto, Akinori Seki, Masakatsu Maeda, Yasuo Takahashi
  • Publication number: 20090069187
    Abstract: On a first intermediate layer provided on a substrate and having an excellent surface smoothness, are formed a second intermediate layer and an YBCO superconductor layer having excellent properties. An YBCO superconductor (10) having a critical current density (Jc) of 1 MA/cm2 or higher can be produced by forming a first intermediate layer (2), a second intermediate layer (3), an YBCO superconductor layer (4) and an Ag-stabilized layer (5) on the surface of a tape-shaped biaxially oriented Ni—W alloy substrate (1), wherein the first intermediate layer (2) has a thickness of 5 nm or less, has a surface smoothness, comprises A2Zr2O7, and is formed by repeating coating and provisional burning several times by the MOD method, the second intermediate layer (3) comprises a CeO2 film and is formed by the pulse plating method, the YBCO superconductor layer (4) is formed by the MOD method, and the Ag-stabilized layer (5) is formed on the YBCO superconductor layer (4).
    Type: Application
    Filed: January 10, 2007
    Publication date: March 12, 2009
    Applicants: INTERNATIONAL SUPERCONDUCTIVITY TECHNOLOGY CENTER,, SWCC SHOWA CABLE SYSTEMS CO., LTD.
    Inventors: Takayo Hasegawa, Yasuo Takahashi
  • Patent number: 7473670
    Abstract: RE superconductive layer of high critical current density (Jc) is superimposed on an interlayer formed so as to, while ensuring cracking prevention, excel in crystallinity, such as in-plane orientation degree and direction, and surface smoothness. On an oriented Ni substrate, there are sequentially superimposed an interlayer of cerium oxide loaded with 20 to 60 mol %, in terms of metal content, of one or at least two rare earth elements according to MOD technique and an RE superconductive layer of high Jc according to MOD technique. The above interlayer is formed by mixing a Gd, Y and/or Yb organometallic compound solution with a Ce organometallic compound solution, applying the mixed solution onto an oriented Ni substrate so as to form a coating film and subjecting the coating film to calcination heat treatment and thereafter firing in an Ar—H2 atmosphere at 950 to 1150° C. under a pressure of 50 to 500 Pa. YBCO superconductive layer is formed on this interlayer according to TFA-MOD technique.
    Type: Grant
    Filed: May 6, 2004
    Date of Patent: January 6, 2009
    Assignees: International Superconductivity Technology Center, The Juridical Foundation, The Furukawa Electric Co., Ltd., SWCC Showa Cable Systems Co., Ltd.
    Inventors: Yasuo Takahashi, Yuji Aoki, Takayo Hasegawa
  • Publication number: 20080301939
    Abstract: The invention is intended to maintain turbine reliability when, based on a gas turbine designed for one desired cycle, a gas turbine for another different cycle is manufactured. A channel of a compressor is formed such that a mass flow of a fluid compressed by the compressor changes. Thus, when manufacturing, based on the gas turbine designed for one desired cycle, the gas turbine for another different cycle, turbine reliability can be maintained.
    Type: Application
    Filed: June 24, 2008
    Publication date: December 11, 2008
    Inventors: Tadaharu Kishibe, Yasuo Takahashi, Hisashi Hamatake
  • Publication number: 20080263862
    Abstract: The invention is intended to maintain turbine reliability when, based on a gas turbine designed for one desired cycle, a gas turbine for another different cycle is manufactured. A channel of a compressor is formed such that a mass flow of a fluid compressed by the compressor changes. Thus, when manufacturing, based on the gas turbine designed for one desired cycle, the gas turbine for another different cycle, turbine reliability can be maintained.
    Type: Application
    Filed: June 24, 2008
    Publication date: October 30, 2008
    Inventors: Tadaharu Kishibe, Yasuo Takahashi, Hisashi Hamatake
  • Patent number: 7441410
    Abstract: The invention is intended to maintain turbine reliability when, based on a gas turbine designed for one desired cycle, a gas turbine for another different cycle is manufactured. A channel of a compressor is formed such that a mass flow of a fluid compressed by the compressor changes. Thus, when manufacturing, based on the gas turbine designed for one desired cycle, the gas turbine for another different cycle, turbine reliability can be maintained.
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: October 28, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Tadaharu Kishibe, Yasuo Takahashi, Hisashi Hamatake
  • Publication number: 20080053127
    Abstract: A heat pump includes an evaporator 10 evaporating water; a steam compressor 1 compressing the vapor generated by the evaporator 10; a vapor supply duct 31 adapted to supply the vapor 30 compressed by the compressor 1 to steam-utilizing facility 2; a measuring device 91 for measuring a state of vapor between the evaporator 10 and the compressor 1; and a valve 81 adjusting an amount of vapor flowing in the compressor 1 based on information from the measuring device 91.
    Type: Application
    Filed: August 17, 2007
    Publication date: March 6, 2008
    Inventors: Yasuo TAKAHASHI, Takanori Shibata, Hidefumi Araki
  • Publication number: 20070184986
    Abstract: RE superconductive layer excelling in Jc and Tc is formed on an interlayer capable of preventing cracking and diffusion of substrate-constituting Ni element into YBCO layer and excelling in crystallinity and surface smoothness. The interlayer is formed by coating a surface of metal substrate with a mixed solution composed of an organometallic acid salt of cerium, an organometallic acid salt of a solid solution formation element capable of forming a solid solution with cerium and an organometallic acid salt of a charge compensation element capable of compensating for a charge mismatch attributed to a difference between the electron valences of respective ions of cerium and the solid solution formation element and subsequently carrying out heat treatment in a reducing atmosphere of 900 to 1200° C. whose pressure ranges from 0.1 Pa to below atmospheric pressure. Thereafter, a rare earth oxide superconductive layer is formed on the interlayer.
    Type: Application
    Filed: March 12, 2004
    Publication date: August 9, 2007
    Applicants: International Superconductivity Technology Center, The Juridical Foundation, Showa Electric Wire & Cable Co., Ltd.
    Inventors: Yuji Aoki, Yasuo Takahashi, Takayo Hasegawa
  • Patent number: 7229598
    Abstract: A honeycomb body, which is composed in such a manner that a strip of corrugated foil made of heat-resistant stainless steel containing aluminum and a strip of flat foil made of stainless steel are alternately wound or laminated on each other, is incorporated into an outer cylinder made of metal and integrated into one body by means of diffusion bonding, so that a diffusion bonded metallic catalyst carrier can be formed. Surface roughness of the strip of foil after the completion of diffusion bonding is 0.001 to 2.0 ?m when it is expressed by center line average height Ra, and no sintered bridges are formed at both end portions of the diffusion bonded section in the longitudinal direction. The catalyst carrier is manufactured in a condition so that ?b, which is defined by ?b=6.
    Type: Grant
    Filed: April 23, 2004
    Date of Patent: June 12, 2007
    Assignee: Nippon Steel Corporation
    Inventors: Yasuo Takahashi, Tadayuki Otani, Kazutoshi Iwami, Masayuki Kasuya
  • Patent number: 7109718
    Abstract: A current to be applied to a ground is defined as the sum of two sinusoidal waves having first and second frequency components. A signal to be used at the time of synchronous detection is defined as a difference between the sinusoidal waves having the first and second frequency components. As a result, a substance in the ground, and the position and depth of the substance can be specified with high accuracy.
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: September 19, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shigekazu Shimizu, Yasuo Takahashi, Yukio Kishimoto, Tomoaki Ueda, Kazuhito Nakamura
  • Publication number: 20060150388
    Abstract: The present invention provides a metal foil tube with a thickness of 10 to 100 ?m and a method and apparatus of production of the metal foil tube enabling even an extremely thin metal foil to be reliably finished into a tube, that is, a metal foil tube comprised of a metal foil sheet W with a thickness t of 10 to 100 ?m joined by welding, the method of production of the metal foil tube shaping the metal foil sheet W to form an overlap part G, then welding the facing sides and finishing the weld zone part flat.
    Type: Application
    Filed: January 19, 2004
    Publication date: July 13, 2006
    Inventors: Koki Inada, Kazutoshi Iwami, Atsuhiko Imai, Hiroki Kobayashi, Yasuo Takahashi, Mukio Yamanaka, Tohru Saito
  • Publication number: 20060128862
    Abstract: A low-heat accumulating thermoplastic resin composition containing 100 parts by mass of a thermoplastic resin [A] and 0.1 to 15 parts by mass of an inorganic pigment [B] having an infrared-reflecting property, and a molded product comprising the composition. The low-heat accumulating thermoplastic resin composition of the present invention is capable of providing a dark-colored molded product exhibiting a less heat accumulation as well as excellent weather resistance and impact resistance.
    Type: Application
    Filed: August 6, 2003
    Publication date: June 15, 2006
    Inventors: Yuuichi Kanayama, Kenichi Noguchi, Yasuo Takahashi, Hideyuki Kurimoto