Patents Assigned to Tanaka Kikinzoku Kogyo K.K.
  • Publication number: 20200052309
    Abstract: The present invention relates to a catalyst for solid polymer fuel cells in which catalyst particles including platinum or platinum alloy are supported on a carbon powder carrier. The catalyst of the present invention is a catalyst for solid polymer fuel cells in which the bond energy (Ec) at a gravity center position is 2.90 eV or more and 3.85 eV or less as calculated from a spectrum area of a Pt5d orbit-derived spectrum which is obtained by measuring a valence band spectrum in a range of 0 eV or more and 20 eV or less in the result of subjecting the catalyst particles to X-ray photoelectron spectroscopic analysis.
    Type: Application
    Filed: April 16, 2018
    Publication date: February 13, 2020
    Applicant: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Takeshi KAIEDA, Koichi MATSUTANI
  • Publication number: 20200036014
    Abstract: The present invention is a catalyst for a solid polymer fuel cell including: catalyst particles of platinum, cobalt and manganese; and a carbon powder carrier supporting the catalyst particles, wherein the component ratio (molar ratio) of the platinum, cobalt and manganese of the catalyst particles is of Pt:Co:Mn=1:0.06 to 0.39:0.04 to 0.33, and wherein in an X-ray diffraction analysis of the catalyst particles, the peak intensity ratio of a Co—Mn alloy appearing around 2?=27° is 0.15 or less on the basis of a main peak appearing around 2?=40°. It is particularly preferred that the catalyst have a peak ratio of a peak of a CoPt3 alloy and an MnPt3 alloy appearing around 2?=32° of 0.14 or more on the basis of a main peak.
    Type: Application
    Filed: September 24, 2019
    Publication date: January 30, 2020
    Applicant: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: MINORU ISHIDA, KOICHI MATSUTANI
  • Patent number: 10538543
    Abstract: The present invention provides a method for producing a cyclometalated iridium complex, the method including producing a cyclometalated iridium complex by reacting a cyclometalated iridium complex raw material including an organoiridium material with an aromatic heterocyclic bidentate ligand capable of forming an iridium-carbon bond and an iridium-nitrogen bond, and using as the raw material an organoiridium material represented by the following general formula (1). The present invention allows a cyclometalated iridium complex to be produced with a high yield without by-production of a halogen-crosslinked iridium dimer.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: January 21, 2020
    Assignees: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Hideo Konno, Junichi Taniuchi, Rumi Kobayashi, Yasushi Masahiro
  • Patent number: 10533027
    Abstract: The present invention provides a method for producing a cyclometalated iridium complex by use of a non-chlorine iridium raw material. The method for producing a cyclometalated iridium complex includes producing a cyclometalated iridium complex by reacting a raw material including an iridium compound with an aromatic heterocyclic bidentate ligand capable of forming an iridium-carbon bond, the raw material being non-halogenated iridium having a conjugated base of a strong acid as a ligand. Here, the non-halogenated iridium is preferably one containing a conjugated base of a strong acid having a pKa of 3 or less as a ligand.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: January 14, 2020
    Assignees: TANAKA KIKINZOKU KOGYO K.K., NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Hideo Konno, Junichi Taniuchi, Ryosuke Harada, Toshiyuki Shigetomi, Rumi Kobayashi, Yasushi Masahiro
  • Publication number: 20190393043
    Abstract: An electrode structure of a back electrode including metal layers laminated in the following order: a Ti layer, a Ni layer, and a Ag alloy layer. The Ag alloy layer includes an Ag alloy and an addition metal M selected from Sn, Sb, and Pd. The electrode structure is configured such that when subjected to elemental analysis with an X-ray photoelectron spectrometer in the depth direction from the Ag alloy layer to the Ni layer, on the boundary between the Ni layer and the Ag alloy layer, an intermediate region where spectra derived from all the metals, Ni, Ag, and the addition element M, can be detected is observable, and, when each metal content in the intermediate region is converted based on the spectra derived from all the metals Ni, Ag, and the addition element M, the maximum of the addition element M content is 5 at % or more.
    Type: Application
    Filed: December 19, 2017
    Publication date: December 26, 2019
    Applicant: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Yohei MIZUNO, Tetsuya KATO, Chiharu ISHIKURA
  • Publication number: 20190383802
    Abstract: According to a pad which is used for an immunochromatographic device for extracting a substance to be detected contained in a detection target in an analyte with nitrous acid and which contains an acid anhydride having vapor pressure at 25° C. of 5×10?2 Pa or less and solubility in water at 25° C. of 0.1 mg/L or more, the storage stability is improved; a substance to be detected contained in an analyte is detected with high sensitivity; and the complexity of production is reduced.
    Type: Application
    Filed: June 13, 2019
    Publication date: December 19, 2019
    Applicant: TANAKA KIKINZOKU KOGYO K.K.
    Inventor: Hiroshi KISHI
  • Publication number: 20190383811
    Abstract: According to an immunochromatographic device for detecting a substance to be detected contained in a detection target in an analyte which is characterized in that a nitrous acid compound containing member having a part containing a nitrous acid compound; a labeling substance retaining member having a labeling substance containing part; an acid anhydride containing member having a part containing an acid anhydride having vapor pressure at 25° C. of 5×10?2 Pa or less; and a chromatography medium member having a detection part are arranged in a manner that a sample develops in the members in this order, the storage stability can be improved; detection with high sensitivity is possible; and the complexity of production can be reduced.
    Type: Application
    Filed: June 13, 2019
    Publication date: December 19, 2019
    Applicant: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Hiroshi KISHI, Hiroko MOCHIZUKI
  • Patent number: 10501826
    Abstract: The present invention provides a superelastic alloy containing Au in an amount of 8.0% by mass or more and 20.0% by mass or less and at least one of Cr and Mo as essential additive elements, Ta as an optional additive element, and Ti and inevitable impurities as a balance, wherein the Cr equivalent calculated on the basis of the following formula for the relationship of the Cr content, the Mo content and the Ta content is within the range of more than 0.5 and less than 8.0. The alloy is a Ni-free superelastic alloy, and has favorable X-ray-imaging property. Accordingly, the alloy can be suitably used in medical fields. Cr equivalent=[Cr content (% by mass)]+([Mo content (% by mass)]/1.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: December 10, 2019
    Assignees: TANAKA KIKINZOKU KOGYO K. K., TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Hideki Hosoda, Tomonari Inamura, Masaki Tahara, Yuri Shinohara, Kota Fuchiwaki, Kenji Goto
  • Publication number: 20190367545
    Abstract: The present invention relates to a chemical deposition raw material for manufacturing an iridium thin film or an iridium compound thin film by a chemical deposition method, including an iridium complex in which cyclopropenyl or a derivative thereof and a carbonyl ligand are coordinated to iridium. The iridium complex that is applied in the present invention enables an iridium thin film to be manufactured even when a reducing gas such as hydrogen is applied. in which R1 to R3, which are substituents of the cyclopropenyl ligand, are each independently hydrogen, or a linear or branched alkyl group with a carbon number of 1 or more and 4 or less.
    Type: Application
    Filed: March 5, 2018
    Publication date: December 5, 2019
    Applicant: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Ryosuke HARADA, Toshiyuki SHIGETOMI, Kazuharu SUZUKI
  • Patent number: 10497942
    Abstract: A method for forming catalyst particles, each of which has a core/shell structure, by a Cu-UPD method. Namely, a method of manufacturing a catalyst wherein catalyst particles, each of which has a core/shell structure composed of a shell layer that is formed of platinum and a core particle that is covered with the shell layer and is formed of a metal other than platinum, are supported on a carrier. This method is characterized by comprising: an electrolysis step wherein the carrier supporting the core particles is electrolyzed in an electrolytic solution containing copper ions, so that copper is precipitated on the surfaces of the core particles; and a substitution reaction step wherein a platinum compound solution is brought into contact with the core particles, on which copper has been precipitated, so that the copper on the surface of each core particle is substituted by platinum, thereby forming a shell layer that is formed of platinum.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: December 3, 2019
    Assignee: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Koichi Matsutani, Takeshi Kaieda, Tomohiro Akiyama
  • Patent number: 10490376
    Abstract: A rivet-type contact of the present invention has a head part made of a contact material, and a leg part narrower than the head part in width and configured to be deformed at fixation. The leg part includes a flange part larger than the leg part in diameter, in an end part of the side of the head part, the flange part is embedded in the head part such that a lower end surface of the flange part and a lower end surface of the head part become approximately flat, and a length (l) between an endmost part of the flange part and a starting point of the leg part satisfies l<L with respect to a length (L) between an endmost part of the head part and the starting point of the leg part. Specifically, it is favorable that l satisfies 0.5L?l?0.9L with respect to L.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: November 26, 2019
    Assignee: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Masao Kuroda, Hiroshi Shirahata
  • Patent number: 10486235
    Abstract: The present invention provides a method for producing silver particles, including the steps of: mixing a thermally decomposable silver compound and an amine compound to prepare a silver-amine complex as a precursor; and heating the silver-amine complex at a heating temperature equal to or higher than the decomposition temperature of the silver-amine complex to precipitate silver particles, the silver compound being silver carbonate, the amine compound being terminated with a primary amino group on at least one end and containing a predetermined hydrocarbon group R with a carbon number of 4 to 10. In the method of the present invention, silver particles with the particle size controlled to fall within the range of 20 nm to 200 nm in terms of an average particle size can be produced.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: November 26, 2019
    Assignee: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Yuichi Makita, Yuusuke Ohshima, Hidekazu Matsuda, Junichi Taniuchi, Noriaki Nakamura, Hitoshi Kubo
  • Patent number: 10485112
    Abstract: A ceramic circuit substrate according to the present invention includes a ceramic substrate, a copper circuit made of a copper-based material bonded, via a bonding layer, to a surface of the ceramic, and a copper heat sink made of the copper-based material bonded, via a bonding layer, to the other surface of the ceramic. The bonding layers each include a brazing material component including two or more kinds of metals, such as Ag, and an active metal having a predetermined concentration. The bonding layers each include a brazing material layer including the brazing material component, and an active metal compound layer containing the active metal. A ratio of a bonding area of the active metal compound layer in a bonding area of each of the bonding layers is 88% or more.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: November 19, 2019
    Assignee: TANAKA KIKINZOKU KOGYO K.K.
    Inventor: Takaomi Kishimoto
  • Publication number: 20190338398
    Abstract: The present invention relates to a Ni-based heat-resistant alloy including Ir: 5.0 mass % or more and 50.0 mass % or less, Al: 1.0 mass % or more and 8.0 mass % or less, W: 5.0 mass % or more and 25.0 mass % or less, and balance Ni, having an L12-structured ?? phase present in the matrix, and including at least one of Ru: 0.8 mass % or more and 5.0 mass % or less and Re: 0.8 mass % or more and 5.0 mass % or less. This Ni-based heat-resistant alloy has improved toughness over a conventional Ni-based heat-resistant alloy based on a Ni—Ir—Al—W-based alloy, and is also excellent in ambient-temperature strength.
    Type: Application
    Filed: December 4, 2017
    Publication date: November 7, 2019
    Applicants: TOHOKU TECHNO ARCH CO., LTD., TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Kiyohito ISHIDA, Toshihiro OMORI, Yutaka SATO, Koichi SAKAIRI, Kunihiro TANAKA, Tatsuya NAKAZAWA
  • Publication number: 20190336956
    Abstract: Provided is a catalyst that can exhibit high activity. The catalyst is an electrode catalyst having catalytic metals supported on a catalyst support, in which the catalytic metals include platinum and a metal component other than platinum; the electrode catalyst has mesopores having a mode radius of pore distribution of mesopores having a radius of 1 nm or more, of 1 nm or more and less than 2.5 nm; alloy microparticles of platinum and the metal component other than platinum are supported inside the mesopores; and a molar content ratio of platinum with respect to the metal component other than platinum in the alloy microparticles supported inside the mesopores is 1.0 to 10.0.
    Type: Application
    Filed: April 6, 2017
    Publication date: November 7, 2019
    Applicants: NISSAN MOTOR CO., LTD., TANAKA KIKINZOKU KOGYO K.K., NIPPON STEEL CHEMICAL & MATERIAL CO., LTD.
    Inventors: Yoshinori SUZUE, Kazuki ARIHARA, Tetsuya MASHIO, Hiroyuki TANAKA, Katsuichiro HAYAKAWA, Koichi MATSUTANI, Hitoshi NAKAJIMA
  • Patent number: 10465283
    Abstract: An organoplatinum compound with the following formula for use as a raw material in the chemical deposition of platinum compound thin films. In the formula, n is 1 or more and 5 or less. Each of substituents R1 to R5 on the alkenyl amine is a hydrogen atom, an alkyl group or the like and has a carbon number of 4 or less. Each of alkyl anions R6 and R7 is an alkyl group having a carbon number of 1 or more and 3 or less. The vapor pressure of the organoplatinum compound is high enough to allow for the manufacturing of a platinum thin film at low temperature. It also has moderate thermal stability.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: November 5, 2019
    Assignee: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Ryosuke Harada, Toshiyuki Shigetomi, Kazuharu Suzuki, Shunichi Nabeya, Akiko Kumakura, Rumi Kobayashi, Takayuki Sone
  • Patent number: 10466237
    Abstract: An object is to provide an immunochromatography detection method and an immunochromatography kit in which a prozone phenomenon occurring in a sandwich method when using an analyte in which an antigen is present in a large excess amount is suppressed/excluded. The object was achieved by retaining a nonionic and hydrophilic surfactant having an HLB value of 13 to 18 in a sample addition part of an immunochromatography device, and also using a membrane having a fast flow speed as a membrane to be used for a chromatograph medium.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: November 5, 2019
    Assignee: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Keita Suzuki, Hisahiko Iwamoto
  • Patent number: 10454113
    Abstract: The present invention is a catalyst for a solid polymer fuel cell including: catalyst particles of platinum, cobalt and manganese; and a carbon powder carrier supporting the catalyst particles, wherein the component ratio (molar ratio) of the platinum, cobalt and manganese of the catalyst particles is of Pt:Co:Mn=1:0.06 to 0.39:0.04 to 0.33, and wherein in an X-ray diffraction analysis of the catalyst particles, the peak intensity ratio of a Co—Mn alloy appearing around 2?=27° is 0.15 or less on the basis of a main peak appearing around 2?=40°. It is particularly preferred that the catalyst have a peak ratio of a peak of a CoPt3 alloy and an MnPt3 alloy appearing around 2?=32° of 0.14 or more on the basis of a main peak.
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: October 22, 2019
    Assignee: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Minoru Ishida, Koichi Matsutani
  • Publication number: 20190316229
    Abstract: The present invention relates to a Ni-based heat-resistant alloy including Ir: 5.0 mass % or more and 50.0 mass % or less, Al: 1.0 mass % or more and 8.0 mass % or less, W: 5.0 mass % or more and 25.0 mass % or less, and balance Ni, having an L12-structured ?? phase present in the matrix, and including at least one of Zr: 0.01 mass % or more and 3.0 mase/0 or less and Hf: 0.01 mass % or more and 3.0 mass % or less. This Ni-based heat-resistant alloy has improved toughness over a conventional Ni-based heat-resistant alloy based on a Ni—Ir—Al—W-based alloy, and is also excellent in ambient-temperature strength.
    Type: Application
    Filed: December 5, 2017
    Publication date: October 17, 2019
    Applicants: TOHOKU TECHNO ARCH CO., LTD., TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Kiyohito ISHIDA, Toshihiro OMORI, Yutaka SATO, Koichi SAKAIRI, Kunihiro TANAKA, Tatsuya NAKAZAWA
  • Patent number: 10441943
    Abstract: The present invention provides a catalyst for hydrogen peroxide decomposition with which hydrogen peroxide present in acid-containing water to be treated can be efficiently decomposed at low cost and which is less apt to dissolve away in the water being treated, can be stably used over a long period, and renders acid recovery and recycling possible. The present invention has solved the problems with a catalyst for hydrogen peroxide decomposition which is for use in decomposing hydrogen peroxide present in acid-containing water to be treated, the catalyst including a base and, a catalyst layer that is amorphous, includes a platinum-group metal having catalytic function and a Group-6 element metal having catalytic function and is formed over the base.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: October 15, 2019
    Assignee: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Hiroyasu Sato, Jun Watanabe, Matsunori Sawada