Patents Assigned to Mitsui Mining & Smelting Co., Ltd.
  • Positive electrode active material for lithium secondary battery
    Patent number: 10186706
    Abstract: Provided is a novel positive electrode active material which can effectively suppress the quantity of gas generated by the reaction with an electrolytic solution. Proposed is a positive electrode active material for a lithium secondary battery including positive electrode active material particles obtained by equipping the entire surface or a part of a surface of lithium manganese-containing composite oxide particles (also referred to as the “core particles”) operating at a charging voltage in a region exceeding 4.3 V in a metal Li reference potential with a layer A containing at least titanium (Ti), aluminum (Al), zirconium (Zr), or two or more kinds of these.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: January 22, 2019
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Shinya Kagei, Natsumi Shibamura, Yanko Marinov Todorov, Yoshimi Hata
  • Positive electrode active material for lithium secondary cell
    Patent number: 10141570
    Abstract: The present invention relates to a positive electrode active material including a lithium metal composite oxide having a layer crystal structure, and provides a novel positive electrode active material for a lithium secondary cell, which can suppress the reaction with an electrolyte solution and can raise the charge-discharge cycle ability of the cell, and can make good the output characteristics of the cell.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: November 27, 2018
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Daisuke Washida, Toshikazu Matsuyama, Tetsuya Mitsumoto, Daisuke Inoue, Hideaki Matsushima, Yoshimi Hata, Hitohiko Ide, Shinya Kagei
  • HALOGEN-CONTAINING TIN OXIDE PARTICLES AND PRODUCTION METHOD THEREOF
    Publication number: 20180305217
    Abstract: These halogen-containing tin oxide particles have a BET specific surface area of 25-100 m2/g and a crystallite diameter of 8-30 nm. The particles optimally contain 0.01-0.75 mass % halogen. Fluoline is optimally contained as the halogen. Optimally, the particles additionally contain tantalum, niobium, phosphorus, antimony, tungsten, or molybdenum. The volume resistivity is optimally 0.1-1000 ?·cm.
    Type: Application
    Filed: September 4, 2015
    Publication date: October 25, 2018
    Applicant: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Yoshihiro YONEDA, Akira AOKI, Kenji SUZUOKA
  • Exhaust gas purifying catalyst
    Patent number: 10022705
    Abstract: To reduce an OSC material, while maintaining necessary OSC capacity; and to improve heat resistance and reactivity of a precious metal. Proposed is an exhaust gas purifying catalyst which comprises a first catalyst layer that is formed on the surface of a substrate that is formed of a ceramic or a metal, and a second catalyst layer that is formed on the upper side of the first catalyst layer. The first catalyst layer comprises a precious metal, an OSC material and an alumina, and the OSC material and the alumina are comprised at a mass ratio of OSC material:alumina=1:7 to 1:3. The second catalyst layer comprises a precious metal, an OSC material and an alumina, and the OSC material and the alumina are comprised at a mass ratio of OSC material:alumina=1:1 to 10:0.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: July 17, 2018
    Assignees: HONDA MOTOR CO., LTD., Mitsui Mining & Smelting Co., Ltd.
    Inventors: Toshiaki Kimura, Hiroyuki Horimura, Takumi Yamaguchi, Takeshi Endo, Akihiro Iimuro, Ryoichi Oshima, Ohki Houshito, Yunosuke Nakahara
  • Carrier for exhaust gas purification catalyst and exhaust gas purification catalyst
    Patent number: 10010871
    Abstract: Provide is a new carrier for exhaust gas purification catalyst which exhibits excellent catalytic activity, particularly catalytic activity at a low temperature. Proposed is a carrier for exhaust gas purification catalyst composed of particles which contain a silicate or phosphate containing one kind or two or more kinds among the elements belonging to Group 1 and Group 2 in the periodic table.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: July 3, 2018
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Sumio Kato, Masataka Ogasawara, Hironori Iwakura, Takahito Asanuma, Takashi Wakabayashi, Yunosuke Nakahara
  • Electrolytic copper foil and electronic device
    Patent number: 9985238
    Abstract: Provided is an electrolytic copper foil significantly useful as electrodes for electronic devices. The electrolytic copper foil used for an electronic device according to the present invention includes copper or copper alloy, the electrolytic copper foil having a 0.2% proof stress of 250 N/mm2 or more after heat treatment at 200° C. for 60 min in a nitrogen atmosphere, wherein at least one of the surfaces of the electrolytic copper foil has a concave-dominant surface profile having a Pv/Pp ratio of 1.2 or more, the Pv/Pp ratio being a ratio of a maximum profile valley depth Pv to a maximum profile peak height Pp as determined in a rectangular area of 181 ?m by 136 ?m in accordance with JIS B 0601-2001.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: May 29, 2018
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventor: Yoshinori Matsuura
  • Spinel-type lithium metal composite oxide
    Patent number: 9960423
    Abstract: Provided is a spinel-type lithium metal composite oxide that makes it possible to achieve excellent high-temperature storage characteristics when used as a positive electrode active material of a lithium battery. The spinel-type (Fd-3m) lithium metal composite oxide is characterized by the oxygen occupancy (OCC) thereof as determined by the Rietveld method being 0.965-1.000, the lattice strain thereof as determined by the Williamson-Hall method being 0.015-0.090, and the ratio (Na/Mn) of the molar content of Na to the molar content of Mn satisfying 0.00<Na/Mn<1.00×10?2.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: May 1, 2018
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Hitohiko Ide, Daisuke Washida, Yuji Hoshi, Yoshimi Hata
  • Sulfide-based solid electrolyte for lithium ion cell, and solid electrolyte compound
    Patent number: 9899702
    Abstract: Relating to a sulfide-based solid electrolyte compound for lithium ion batteries which has a cubic argyrodite-type crystal structure, to provide a compound which can suppress a generation amount of hydrogen sulfide when being left to stand in the air and which can maintain high conductivity even when being left to stand in dry air. Proposed is a sulfide-based solid electrolyte compound for lithium ion batteries containing a crystal phase of the cubic argyrodite-type crystal structure and represented by a composition formula (1): Li7?x+yPS6?xClx+y, wherein x and y in the composition formula (1) satisfy 0.05?y?0.9 and ?3.0x+1.8?y??3.0x+5.7.
    Type: Grant
    Filed: December 25, 2015
    Date of Patent: February 20, 2018
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Norihiko Miyashita, Takashi Chikumoto, Tatsuya Aoki, Hitohiko Ide, Kenji Matsuzaki
  • Sulfide-based solid electrolyte for lithium ion batteries
    Patent number: 9899701
    Abstract: Proposed is a new sulfide-based solid electrolyte for lithium ion batteries, the sulfide-based solid electrolyte relating to a compound that has a cubic argyrodite type crystal structure and is represented by Li7-x-2yPS6-x-yClx, and having excellent water resistance and oxidation resistance. Proposed is a sulfide-based solid electrolyte for lithium ion batteries, the sulfide-based solid electrolyte containing a compound that has a cubic argyrodite type crystal structure and is represented by compositional formula (1): Li7-x-2yPS6-x-yClx, in which compositional formula, conditions: 0.8?x?1.7 and 0<y??0.25x+0.5 are satisfied.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: February 20, 2018
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Norihiko Miyashita, Takashi Chikumoto, Hideaki Matsushima, Kenji Matsuzaki
  • Spinel-type lithium manganese transition metal oxide
    Patent number: 9893355
    Abstract: Provided is a new spinel type lithium manganese transition metal oxide for use in lithium batteries, which can increase the capacity retention ratio during cycling, and can increase the power output retention ratio during cycling. Disclosed is a spinel type lithium manganese transition metal oxide having an angle of repose of 50° to 75°, and having an amount of moisture (25° C. to 300° C.) measured by the Karl Fischer method of more than 0 ppm and less than 400 ppm.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: February 13, 2018
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Tetsuya Mitsumoto, Hitohiko Ide, Shinya Kagei, Yoshimi Hata, Natsumi Shibamura
  • Sulfide-based solid electrolyte for lithium ion battery
    Patent number: 9812734
    Abstract: Provided is a solid electrolyte with which charge/discharge efficiency and cycle characteristics can be increased by reducing the electron conductivity of a compound which has a cubic crystal structure belonging to a space group F-43m, and is represented by Compositional Formula: Li7-xPS6-xHax (Ha is Cl or Br). Proposed is a sulfide-based solid electrolyte for a lithium ion battery, which includes a compound having a cubic crystal structure belonging to a space group F-43m, and being represented by Compositional Formula: Li7-xPS6-xHax (Ha is Cl or Br), in which x in the above Compositional Formula is 0.2 to 1.8, and the value of the lightness L* thereof in the L*a*b* color system is 60.0 or more.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: November 7, 2017
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Norihiko Miyashita, Takashi Chikumoto, Hideaki Matsushima, Kenji Matsuzaki
  • Metal foil and electronic device
    Patent number: 9786404
    Abstract: There is provided a metal foil suitable for an electrode substrate for an electronic element, which makes it possible to suppress oxidation of the ultra-smooth surface and also prevent roll scratches when wound in a roll. The metal foil of the present invention is made of copper or copper alloy. The front surface of the metal foil has an ultra-smooth surface profile having an arithmetic mean roughness Ra of 30 nm or less as determined in accordance with JIS B 0601-2001. The back surface of the metal has a concave-dominant surface profile having a Pv/Pp ratio of 1.5 or more, the Pv/Pp ratio being a ratio of a maximum profile valley depth Pv to a maximum profile peak height Pp of a profile curve as determined in a rectangular area of 181 ?m by 136 ?m in accordance with JIS B 0601-2001.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: October 10, 2017
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Yoshinori Matsuura, Nozomu Kitajima, Toshimi Nakamura, Masaharu Myoi
  • Spinel-type lithium cobalt manganese-containing complex oxide
    Patent number: 9786914
    Abstract: There is provided a Co-based 5-V spinel-type lithium manganese-containing complex oxide not only having an operating potential of 4.5 V or higher but also being capable of extending its capacity region of a 5.5 to 5.5 V region and being capable of enhancing its energy density as well. There is proposed a spinel-type lithium cobalt manganese-containing complex oxide having a crystal structure classified as a space group Fd-3m and being represented by the general formula [Lix(CoyMn3?x?y)O4??] (wherein 0.90?x?1.15 and 0.75?y?1.25), wherein the oxide has a crystallite size measured by a Rietveld method using the fundamental method of 100 nm to 200 nm, an interatomic distance of Li—O of 1.80 ? to 2.00 ?, and a strain of 0.20 to 0.50.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: October 10, 2017
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Kyohei Yamaguchi, Natsumi Ito, Tsukasa Takahashi, Tetsuya Mitsumoto, Shinya Kagei, Yoshimi Hata
  • Exhaust gas purification palladium monolayer catalyst for saddle-riding-type vehicle
    Patent number: 9737850
    Abstract: Provided is a novel palladium catalyst capable of efficiently purifying carbon monoxide (CO) and total hydrocarbons (THC) under a fuel-rich atmosphere even when palladium (Pd) is used as a catalyst active component. Proposed is a palladium monolayer catalyst for an exhaust gas from a saddle-riding-type vehicle, which is an exhaust gas purification catalyst for a saddle-riding-type vehicle to be installed in an exhaust gas passage in an internal combustion engine. The palladium monolayer catalyst includes a substrate, and a catalyst layer that has the form of a monolayer and contains palladium acting as a catalyst active component, an inorganic porous body acting as a catalyst carrier, ceria (CeO2) particles acting as a promoter component, and barium.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: August 22, 2017
    Assignees: Honda Motor Co., Ltd., Mitsui Mining & Smelting Co., Ltd.
    Inventors: Toshiaki Kimura, Hiroyuki Horimura, Akiko Koga, Motoki Ito, Masateru Tsuji, Takashi Wakabayashi, Yosuke Shibata, Yunosuke Nakahara, Kiyotaka Yasuda
  • Hydrogen storing alloy
    Patent number: 9738952
    Abstract: A hydrogen storing alloy containing only a few impurities leading to a short circuit where the yield can be maintained even when the alloy is subjected to magnetic separation treatment. A hydrogen storing alloy includes a matrix phase having an AB5 type crystal structure, the alloy having a misch metal (referred to as “Mm”) in an A-site in an ABx composition and having any one or at least one of Ni, Al, Mn, and Co in a B-site in the ABx composition, wherein the ratio (referred to as “ABx”) of the total number of moles of elements comprising the B site to the total number of moles of elements comprising the A site is 5.00<ABx?5.40; the content of Co is more than 0.0 mol % and less than 0.7 mol %; and residual magnetization is more than 0 emu/g and 0.020 emu/g or less.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: August 22, 2017
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Shingo Kikugawa, Keisuke Miyanohara, Yoshimi Hata
  • EXHAUST GAS PURIFYING CATALYST
    Publication number: 20170232425
    Abstract: To reduce an OSC material, while maintaining necessary OSC capacity; and to improve heat resistance and reactivity of a precious metal. Proposed is an exhaust gas purifying catalyst which comprises a first catalyst layer that is formed on the surface of a substrate that is formed of a ceramic or a metal, and a second catalyst layer that is formed on the upper side of the first catalyst layer. The first catalyst layer comprises a precious metal, an OSC material and an alumina, and the OSC material and the alumina are comprised at a mass ratio of OSC material:alumina=1:7 to 1:3. The second catalyst layer comprises a precious metal, an OSC material and an alumina, and the OSC material and the alumina are comprised at a mass ratio of OSC material:alumina=1:1 to 10:0.
    Type: Application
    Filed: October 21, 2015
    Publication date: August 17, 2017
    Applicants: HONDA MOTOR CO., LTD., Mitsui Mining & Smelting Co., Ltd.
    Inventors: Toshiaki KIMURA, Hiroyuki HORIMURA, Takumi YAMAGUCHI, Takeshi ENDO, Akihiro IIMURO, Ryoichi OSHIMA, Ohki HOUSHITO, Yunosuke NAKAHARA
  • Catalyst carrier and exhaust gas purifying catalyst
    Patent number: 9731274
    Abstract: The present invention relates to a catalyst carrier comprising an apatite-type composite oxide and proposes a catalyst carrier capable of improving purification performance of NOx due to improvement of phosphorus poisoning. Proposed is a catalyst carrier which contains a composite oxide that is represented by a composition formula of (LaA)9.33??B6O27.00?? (wherein, 0.3???3.0, 0.0<??6.0; “A” represents one or two or more elements selected from Ba, Pr, Y, Sr, Mg, and Ce; and “B” represents one or two or more elements selected from Si, P, and Fe).
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: August 15, 2017
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Yasunori Imada, Yunosuke Nakahara
  • Diesel particulate filter and exhaust gas purification device
    Patent number: 9708946
    Abstract: Provided is a novel DPF which can prevent PM from accumulating on the surface and interior of a filter substrate, and can suppress an increase in back pressure caused by exhaust gas. The DPF has a configuration in which an inorganic porous layer, which includes a metal oxide or a metal composite oxide and provided with surface irregularities having a thickness of at least 50% of the thickness of the inorganic porous layer, is formed on part or all of the surface of the dividing wall on the side where exhaust gas flows in.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: July 18, 2017
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Ataru Daido, Takahiro Kogawa
  • Exhaust-gas-purification catalyst carrier
    Patent number: 9707543
    Abstract: Provided is an exhaust-gas-purification catalyst carrier that contains a ceria-zirconia complex oxide having a pyrochlore phase and a novel exhaust-gas-purification catalyst carrier that exhibit excellent OSC performance at any temperature region of a low temperature (around 400° C.) and a high temperature (around 800° C.). Proposed is the exhaust-gas-purification catalyst carrier containing a ceria-zirconia complex oxide which has a pyrochlore phase and is 7.0 m2/g or more in specific surface area and in the range of 100 ? to 700 ? in crystallite size.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: July 18, 2017
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Takahito Asanuma, Yasuhide Yamaguchi, Yunosuke Nakahara
  • Carrier for exhaust gas purification catalyst, and exhaust gas purification catalyst
    Patent number: 9687817
    Abstract: Provided is a carrier for an exhaust gas purification catalyst containing aluminum borate particles having a peak (pore peak) exhibiting the highest intensity in a void volume diameter range of from 20 nm to 100 nm in a logarithmic differential void volume distribution measured using a mercury intrusion porosimeter, in order to provide a new catalyst support capable of effectively suppressing a decrease in catalytic performance caused by sulfur (S) component contained in the exhaust gas, in the case of supporting Pd as a catalytically active component.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: June 27, 2017
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Akira Abe, Takahiro Sato, Ohki Houshito, Yuki Nagao, Yunosuke Nakahara