Patents by Inventor Shoei Teshima

Shoei Teshima 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: 11002498
    Abstract: An aluminum alloy fin material for a heat exchanger in the present invention comprises an aluminum alloy having a composition containing Mn: 1.2 to 2.0%, Cu: 0.05 to 0.20%, Si: 0.5 to 1.30%, Fe: 0.05 to 0.5%, and Zn: 1.0 to 3.0% by mass and a remainder comprising Al and an unavoidable impurity, further containing one or two or more of Ti: 0.01 to 0.20%, Cr: 0.01 to 0.20% and Mg: 0.01 to 0.20% by mass as desired, and, after heating in brazing, has a tensile strength of 140 MPa or more, a proof stress of 50 MPa or more, an electrical conductivity of 42% IACS or more, an average grain diameter of 150 ?m or more and less than 700 ?m, and a potential of ?800 mV or more and ?720 mV or less.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: May 11, 2021
    Assignees: MITSUBISHI ALUMINUM CO., LTD., DENSO CORPORATION
    Inventors: Shigeki Nakanishi, Shohei Iwao, Masakazu Edo, Hayaki Teramoto, Manabu Hasegawa, Michiyasu Yamamoto, Shoei Teshima
  • Patent number: 10788275
    Abstract: An aluminum alloy clad material includes a core material, one side being clad with cladding material 1, the other side being clad with cladding material 2, the core material including an aluminum alloy that includes 0.5 to 1.8% of Mn, and limited to 0.05% or less of Cu, with the balance being Al and unavoidable impurities, the cladding material 1 including an aluminum alloy that includes 3 to 10% of Si, and 1 to 10% of Zn, with the balance being Al and unavoidable impurities, and the cladding material 2 including an aluminum alloy that includes 3 to 13% of Si, and limited to 0.05% or less of Cu, with the balance being Al and unavoidable impurities, wherein the Si content X (%) in the cladding material 1 and the Si content Y (%) in the cladding material 2 satisfy the value (Y?X) is ?1.5 to 9%.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: September 29, 2020
    Assignees: DENSO CORPORATION, UACJ Corporation
    Inventors: Shusuke Otsuki, Shoei Teshima, Yuusuke Kitoh, Jun Abei, Tomohiro Shoji, Naoki Yamashita, Toshikazu Tanaka, Hirokazu Tanaka
  • Patent number: 10688601
    Abstract: Provided is an aluminum alloy clad material including an aluminum alloy core material, an intermediate layer material that is clad on one surface of the core material, and a first brazing filler metal that is clad on a surface of the intermediate layer material, the surface not being on the core material side, wherein the core material, the intermediate layer material, and the first brazing filler metal each include an aluminum alloy having a predetermined composition, the existence density of Al—Mn based intermetallic compounds having a circle-equivalent diameter between 0.1 and 1.0 ?m inclusive in the intermediate layer material before brazing heating is at least 1.0×105 pieces/mm2, and the existence density of Al—Mn based intermetallic compounds having a circle-equivalent diameter between 0.1 and 1.0 ?m inclusive in the intermediate layer material after brazing heating is at least 1.0×104 pieces/mm2. Further provided is a method for producing the aluminum alloy clad material.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: June 23, 2020
    Assignees: DENSO CORPORATION, UACJ CORPORATION
    Inventors: Taichi Asano, Masaki Harada, Shoei Teshima, Makoto Ando, Naoki Yamashita
  • Patent number: 10625379
    Abstract: Provided is an aluminum alloy clad material including an aluminum alloy core material and a first brazing filler metal that is clad on one surface or both surfaces of the core material, wherein the core material and the first brazing filler metal each include an aluminum alloy having a predetermined composition, the existence density of Al—Mn based intermetallic compounds having a circle-equivalent diameter of at least 0.1 ?m in the first brazing filler metal before brazing heating is at least 1.0×105 pieces/mm2, and the existence density of Al—Mn based intermetallic compounds having a circle-equivalent diameter of at least 2 ?m in the first brazing filler metal after brazing heating is at least 300 pieces/mm2. Further provided are a method for producing the aluminum alloy clad material and a heat exchanger employing the aluminum alloy clad material.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: April 21, 2020
    Assignee: UACJ Corporation
    Inventors: Taichi Asano, Masaki Harada, Shoei Teshima, Makoto Ando, Wataru Narita, Naoki Yamashita
  • Patent number: 10369665
    Abstract: This brazed structure includes a brazing sheet that has been brazed and that comprises: a core material comprising an aluminum alloy which contains 0.3-1.0 mass %, excluding 0.3 mass %, Si, 0.6-2.0 mass %, excluding 0.6 mass %, Mn, 0.3-1.0 mass %, excluding 0.3 mass %, Cu, and 0.15-0.5 mass %, excluding 0.15 mass %, Mg, with the remainder comprising Al and unavoidable impurities, and has an average crystal grain diameter of 50 ?m or larger and in which an Mg—Si intermetallic compound and an Al—Mg—Si—Cu intermetallic compound account for 40% or less of the grain boundaries; and, clad to the core material, a brazing material comprising an Al—Si alloy.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: August 6, 2019
    Assignees: KOBE STEEL, LTD., DENSO CORPORATION
    Inventors: Takahiro Izumi, Shimpei Kimura, Yuji Shibuya, Shoei Teshima, Hayaki Teramoto, Osamu Hakamata
  • Patent number: 10286496
    Abstract: A brazing sheet formed of an aluminum alloy and exhibiting excellent post-brazing strength, corrosion resistance and brazability with a thickness of less than 200 ?m is provided. The brazing sheet includes a core layer, a filler layer of an Al—Si based alloy on one side of the core layer, and a sacrificial layer on the other side of the core layer. The core layer includes more than 1.5 mass % and 2.5 mass % or less of Cu, 0.5 mass % to 2.0 mass % of Mn, Al, and inevitable impurities. The sacrificial layer includes 2.0 mass % to 7.0 mass % of Zn, more than 0.10 mass % and 3.0 mass % or less of Mg, Al, and inevitable impurities. The filler layer and the sacrificial layer each have a thickness of 15 ?m to 50 ?m. A total clad rate of the filler layer and the sacrificial layer is equal to or less than 50%.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: May 14, 2019
    Assignees: Kobe Steel, Ltd., DENSO CORPORATION
    Inventors: Shimpei Kimura, Akihiro Tsuruno, Takahiro Izumi, Yuji Shibuya, Hayaki Teramoto, Shoei Teshima, Manabu Hasegawa, Michiyasu Yamamoto
  • Patent number: 10094629
    Abstract: An aluminum alloy clad material includes a core material, an inner cladding material, and a sacrificial anode material, one side of the core material being clad with the inner cladding material, the other side of the core material being clad with the sacrificial anode material, the core material being formed of an Al—Mn alloy that includes 0.6 to 2.0 mass % of Mn and 0.4 mass % or less of Cu, with the balance being aluminum and unavoidable impurities, the inner cladding material being formed of an Al—Mn—Cu alloy that includes 0.6 to 2.0 mass % of Mn and 0.2 to 1.5 mass % of Cu, with the balance being aluminum and unavoidable impurities, and the sacrificial anode material being formed of an Al—Zn alloy that includes 0.5 to 10.0 mass % of Zn, with the balance being aluminum and unavoidable impurities.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: October 9, 2018
    Assignees: DENSO CORPORATION, UACJ CORPORATION
    Inventors: Shusuke Otsuki, Shoei Teshima, Kouichi Nakashita, Kouta Hagihara, Toshikazu Tanaka, Ryoko Fujimura, Naoki Yamashita, Hirokazu Tanaka
  • Publication number: 20180200843
    Abstract: The present invention provides an aluminum alloy brazing sheet which maintains high corrosion resistance after brazing treatment and has good brazeability, a method for producing the same, and a heat exchanger.
    Type: Application
    Filed: June 16, 2016
    Publication date: July 19, 2018
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Katsuhiro MATSUKADO, Akihiro TSURUNO, Shogo YAMADA, Shoei TESHIMA, Tooru IKEDA, Kouki NISHIYAMA
  • Publication number: 20180193960
    Abstract: Provided is an aluminum alloy clad material including an aluminum alloy core material, an intermediate layer material that is clad on one surface of the core material, and a first brazing filler metal that is clad on a surface of the intermediate layer material, the surface not being on the core material side, wherein the core material, the intermediate layer material, and the first brazing filler metal each include an aluminum alloy having a predetermined composition, the existence density of Al—Mn based intermetallic compounds having a circle-equivalent diameter between 0.1 and 1.0 ?m inclusive in the intermediate layer material before brazing heating is at least 1.0×105 pieces/mm2, and the existence density of Al—Mn based intermetallic compounds having a circle-equivalent diameter between 0.1 and 1.0 ?m inclusive in the intermediate layer material after brazing heating is at least 1.0×104 pieces/mm2. Further provided is a method for producing the aluminum alloy clad material.
    Type: Application
    Filed: July 8, 2016
    Publication date: July 12, 2018
    Inventors: Taichi Asano, Masaki Harada, Shoei Teshima, Makoto Ando, Naoki Yamashita
  • Publication number: 20180193961
    Abstract: Provided is an aluminum alloy clad material including an aluminum alloy core material and a first brazing filler metal that is clad on one surface or both surfaces of the core material, wherein the core material and the first brazing filler metal each include an aluminum alloy having a predetermined composition, the existence density of Al—Mn based intermetallic compounds having a circle-equivalent diameter of at least 0.1 ?m in the first brazing filler metal before brazing heating is at least 1.0×105 pieces/mm2, and the existence density of Al—Mn based intermetallic compounds having a circle-equivalent diameter of at least 2 ?m in the first brazing filler metal after brazing heating is at least 300 pieces/mm2. Further provided are a method for producing the aluminum alloy clad material and a heat exchanger employing the aluminum alloy clad material.
    Type: Application
    Filed: July 8, 2016
    Publication date: July 12, 2018
    Inventors: Taichi Asano, Masaki Harada, Shoei Teshima, Makoto Ando, Wataru Narita, Naoki Yamashita
  • Publication number: 20170321974
    Abstract: An aluminum alloy clad material includes a core material, one side being clad with cladding material 1, the other side being clad with cladding material 2, the core material including an aluminum alloy that includes 0.5 to 1.8% of Mn, and limited to 0.05% or less of Cu, with the balance being Al and unavoidable impurities, the cladding material 1 including an aluminum alloy that includes 3 to 10% of Si, and 1 to 10% of Zn, with the balance being Al and unavoidable impurities, and the cladding material 2 including an aluminum alloy that includes 3 to 13% of Si, and limited to 0.05% or less of Cu, with the balance being Al and unavoidable impurities, wherein the Si content X (%) in the cladding material 1 and the Si content Y (%) in the cladding material 2 satisfy the value (Y?X) is ?1.5 to 9%.
    Type: Application
    Filed: November 18, 2015
    Publication date: November 9, 2017
    Applicants: DENSO CORPORATION, UACJ Corporation
    Inventors: Shusuke Otsuki, Shoei Teshima, Yuusuke Kitoh, Jun Abei, Tomohiko Shoji, Naoki Yamashita, Toshikazu Tanaka, Hirokazu Tanaka
  • Patent number: 9789564
    Abstract: The disclosed method relates to manufacturing a heat exchanger which causes no brazing defects, and a heat exchanger manufactured by the method. The method relates to manufacturing a heat exchanger having an aluminum alloy tube defining a cooling-medium flowing passage and a copper alloy tube defining a water flowing passage, wherein a heat exchange is carried out between a cooling medium flowing through the cooling-medium flowing passage and water flowing through the water flowing passage. The aluminum alloy tube and the copper alloy tube are brazed to each other at a temperature of less than 548° C.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: October 17, 2017
    Assignees: UACJ CORPORATION, DENSO CORPORATION
    Inventors: Akira Yanagida, Shoei Teshima, Takeshi Iguchi, Masakazu Morimoto, Kotaro Kitawaki, Kazuyoshi Nakashima, Takashi Murase
  • Publication number: 20170232561
    Abstract: Disclosed is an aluminum alloy brazing sheet including a core material, a brazing filler material provided on one surface of the core material and formed of an Al—Si based alloy, and a sacrificial anode material provided on the other surface of the core material, the brazing sheet having a thickness of less than 200 ?m, wherein the core material includes more than 1.5% by mass and 2.5% or less by mass of Cu, and 0.5 to 2.0% by mass of Mn, with the balance being Al and inevitable impurities, wherein the sacrificial anode material includes 2.0 to 10.0% by mass of Zn, an Mg content in the sacrificial anode material being restricted to 0.10% or less by mass, with the balance being Al and inevitable impurities, and wherein each of the brazing filler material and the sacrificial anode material has a thickness thereof in a range of 15 to 50 ?m, and the total of cladding rates of the brazing filler material and sacrificial anode material is 50% or less.
    Type: Application
    Filed: September 28, 2015
    Publication date: August 17, 2017
    Applicants: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.), DENSO CORPORATION
    Inventors: Shimpei KIMURA, Akihiro TSURUNO, Takahiro IZUMI, Yuji SHIBUYA, Hayaki TERAMOTO, Michiyasu YAMAMOTO, Manabu HASEGAWA, Shoei TESHIMA
  • Publication number: 20170173740
    Abstract: The present invention provides a brazing sheet formed of an aluminum alloy which exhibits excellent post-brazing strength, corrosion resistance and brazability even though its thickness is less than 200 ?m. Disclosed is a brazing sheet formed of an aluminum alloy including a core layer, a brazing filler layer provided on one side of the core layer and formed of an Al—Si based alloy, and a sacrificial layer provided on the other side of the core layer, the brazing sheet having a thickness of less than 200 ?m, wherein the core layer includes Cu: more than 1.5% by mass and 2.5% or less by mass and Mn: 0.5 to 2.0% by mass, with the balance being Al and inevitable impurities, the sacrificial layer includes Zn: 2.0 to 7.0% by mass and Mg: more than 0.10% by mass and 3.
    Type: Application
    Filed: February 9, 2015
    Publication date: June 22, 2017
    Applicants: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.), DENSO CORPORATION
    Inventors: Shimpei KIMURA, Akihiro TSURUNO, Takahiro IZUMI, Yuji SHIBUYA, Hayaki TERAMOTO, Shoei TESHIMA, Manabu HASEGAWA, Michiyasu YAMAMOTO
  • Publication number: 20160290743
    Abstract: An aluminum alloy clad material produces a heat exchanger tube that exhibits excellent outer-side corrosion resistance when formed into a tube. The aluminum alloy clad material includes a core material, an inner cladding material, and a sacrificial anode material, one side of the core material being clad with the inner cladding material, the other side of the core material being clad with the sacrificial anode material, the core material being formed of an Al—Mn alloy that includes 0.6 to 2.0 mass % of Mn and 0.4 mass % or less of Cu, with the balance being aluminum and unavoidable impurities, the inner cladding material being formed of an Al—Mn—Cu alloy that includes 0.6 to 2.0 mass % of Mn and 0.2 to 1.5 mass % of Cu, with the balance being aluminum and unavoidable impurities, and the sacrificial anode material being formed of an Al—Zn alloy that includes 0.5 to 10.0 mass % of Zn, with the balance being aluminum and unavoidable impurities.
    Type: Application
    Filed: November 12, 2013
    Publication date: October 6, 2016
    Inventors: Shusuke OTSUKI, Shoei TESHIMA, Kouichi NAKASHITA, Kouta HAGIHARA, Toshikazu TANAKA, Ryoko FUJIMURA, Naoki YAMASHITA, Hirokazu TANAKA
  • Publication number: 20160187079
    Abstract: An aluminum alloy fin material for a heat exchanger in the present invention comprises an aluminum alloy having a composition containing Mn: 1.2 to 2.0%, Cu: 0.05 to 0.20%, Si: 0.5 to 1.30%, Fe: 0.05 to 0.5%, and Zn: 1.0 to 3.0% by mass and a remainder comprising Al and an unavoidable impurity, further containing one or two or more of Ti: 0.01 to 0.20%, Cr: 0.01 to 0.20% and Mg: 0.01 to 0.20% by mass as desired, and, after heating in brazing, has a tensile strength of 140 MPa or more, a proof stress of 50 MPa or more, an electrical conductivity of 42% IACS or more, an average grain diameter of 150 ?m or more and less than 700 ?m, and a potential of ?800 mV or more and ?720 mV or less.
    Type: Application
    Filed: December 28, 2015
    Publication date: June 30, 2016
    Applicants: MITSUBISHI ALUMINUM CO., LTD., DENSO CORPORATION
    Inventors: Shigeki NAKANISHI, Shohei IWAO, Masakazu EDO, Hayaki TERAMOTO, Manabu HASEGAWA, Michiyasu YAMAMOTO, Shoei TESHIMA
  • Publication number: 20160031045
    Abstract: This brazed structure includes a brazing sheet that has been brazed and that comprises: a core material comprising an aluminum alloy which contains 0.3-1.0 mass %, excluding 0.3 mass %, Si, 0.6-2.0 mass %, excluding 0.6 mass %, Mn, 0.3-1.0 mass %, excluding 0.3 mass %, Cu, and 0.15-0.5 mass %, excluding 0.15 mass %, Mg, with the remainder comprising Al and unavoidable impurities, and has an average crystal grain diameter of 50 ?m or larger and in which an Mg—Si intermetallic compound and an Al—Mg—Si—Cu intermetallic compound account for 40% or less of the grain boundaries; and, clad to the core material, a brazing material comprising an Al—Si alloy.
    Type: Application
    Filed: March 24, 2014
    Publication date: February 4, 2016
    Applicants: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD,), DENSO CORPORATION
    Inventors: Takahiro IZUMI, Shimpei KIMURA, Yuji SHIBUYA, Shoei TESHIMA, Hayaki TERAMOTO, Osamu HAKAMATA
  • Publication number: 20130199763
    Abstract: The disclosed method relates to manufacturing a heat exchanger which causes no brazing defects, and a heat exchanger manufactured by the method. The method relates to manufacturing a heat exchanger having an aluminum alloy tube defining a cooling-medium flowing passage and a copper alloy tube defining a water flowing passage, wherein a heat exchange is carried out between a cooling medium flowing through the cooling-medium flowing passage and water flowing through the water flowing passage. The aluminum alloy tube and the copper alloy tube are brazed to each other at a temperature of less than 548° C.
    Type: Application
    Filed: December 14, 2012
    Publication date: August 8, 2013
    Applicants: FURUKAWA-SKYALUMINUM CORP, DENSO CORPORATION
    Inventors: Akira YANAGIDA, Shoei TESHIMA, Takeshi IGUCHI, Masakazu MORIMOTO, Kotaro KITAWAKI, Kazuyoshi NAKASHIMA, Takashi MURASE
  • Patent number: 8075706
    Abstract: A paste composition for aluminum brazing of the invention contains 40 to 65% by weight of a metal powder for brazing (a), 5 to 35% by weight of a fluoride type flux (b), 1 to 10% by weight of a methacrylic acid ester type polymer (c), and 10 to 40% by weight of an organic solvent (d); and the component (d) is a hydrocarbon type organic solvent having no aromatic ring and no hydroxyl group and the composition is in a paste-like state having a viscosity of 6,000 to 200,000 mPa·s at 23° C. and accordingly, the storage stability and applicability (practically, discharge property and pressure stability by using a dispenser) and brazing property can be improved in good balance.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: December 13, 2011
    Assignees: Harima Chemicals, Inc., Denso Corporation
    Inventors: Tomoaki Akazawa, Masaki Teruse, Ichiro Taninaka, Shoei Teshima, Kinya Yamamoto, Akira Itoh, Ken Muto
  • Publication number: 20100206533
    Abstract: A heat exchanger includes a plurality of tubes in which a thermal fluid flows, and a tank located at one longitudinal end portion of each tube and is brazed to the longitudinal end portions of the tubes to communicate with the tubes. The tank and the tube are respectively made of clad material plates in each of which a brazing material is clad on at least one surface of a core material. The brazing material of the tank and the brazing material of the tube respectively include Si content. Furthermore, a rate of the Si content in the brazing material of the tank is lower than that in the brazing material of the tube, and is in a range larger than 0% and equal to or smaller than 6%. Thus, meltage of the tube due to molten brazing material can be reduced during brazing of the tube and the tank.
    Type: Application
    Filed: January 19, 2010
    Publication date: August 19, 2010
    Applicant: DENSO CORPORATION
    Inventors: Tetsuya Sakakibara, Shoei Teshima