Patents Assigned to Mitsui Mining & Smelting Co., Ltd.
  • Patent number: 10629935
    Abstract: In this fuel cell electrode catalyst layer, a catalyst is supported on a carrier comprising inorganic oxide particles. The fuel cell electrode catalyst layer is provided with a porous structure. When a mercury penetration method is used to measure the pore size distribution of the porous structure, a peak is observed in the range spanning from 0.005 ?m to 0.1 ?m inclusive, and a peak is also observed in the range spanning from over 0.1 ?m to not more than 1 ?m. When P1 represents the peak intensity in the range spanning from 0.005 ?m to 0.1 ?m inclusive, and P2 represents the peak intensity in the range spanning from over 0.1 ?m to not more than 1 ?m, the value of P2/P1 is 0.2-10 inclusive. It is preferable that the inorganic oxide be tin oxide.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: April 21, 2020
    Assignee: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Ryoma Tsukuda, Naohiko Abe, Hiromu Watanabe, Susumu Takahashi, Kenichi Amitani, Akiko Sugimoto
  • Publication number: 20200113066
    Abstract: Provided is a method of manufacturing a circuit board involves: preparing a composite laminate including a support, a release layer, and a multilayered circuit board; disposing the composite laminate on a stage such that one face of the composite laminate is put into tight contact with the stage; and releasing the support or the multilayered circuit board from the release layer such that the support or the multilayered circuit board forms a convex face with a curvature radius of 200 to 5000 mm while the face of the composite laminate is kept in tight contact with the stage. The method according to the present invention can prevent the occurrences of defects, for example, breaking in the support and cracking and wire disconnections in the multilayered circuit board in manufacturing of circuit boards, such as coreless circuit boards, and ensure stable release of the support or the multilayered circuit board.
    Type: Application
    Filed: March 9, 2018
    Publication date: April 9, 2020
    Applicant: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Toshimi NAKAMURA, Yoshinori MATSUURA
  • Patent number: 10615425
    Abstract: Disclosed is a tin oxide containing antimony and at least one element A selected from the group consisting of tantalum, tungsten, niobium, and bismuth. The antimony and the at least one element A selected from the group consisting of tantalum, tungsten, niobium, and bismuth are preferably dissolved in a solid state in tin oxide. The ratio of the number of moles of the element A to the number of moles of antimony, i.e., [(the number of moles of the element A/the number of moles of antimony)], is preferably 0.1 to 10.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: April 7, 2020
    Assignee: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Koichi Miyake, Susumu Takahashi, Hiromu Watanbe, Naohiko Abe, Ryoma Tsukuda, Kenichi Amitani, Koji Taniguchi, Hiroki Takahashi, Yoshihiro Yoneda, Kazuhiko Kato
  • Patent number: 10612127
    Abstract: Provided is a sputtering target having extremely low occurrence of arcing or nodules, and a method for manufacturing such a sputtering target. A flat plate-shaped or cylindrical target material (3, 13) is obtained by processing a material composed of an oxide sintered body. In doing so, a grindstone having a specified grade is used to perform rough grinding of a surface of the material that will become a sputtering surface (5, 15) one or more times in accordance to the grade of the grindstone, after which zero grinding is performed one or more times so that the surface roughness of the sputtering surface (5, 15) has an arithmetic mean roughness Ra of 0.9 ?m or more, a maximum height Rz of 10.0 ?m or less, and RzJIS roughness of 7.0 ?m or less. A sputtering target (1, 11) is obtained by bonding the obtained target material (3, 13) to a backing body (2, 12) by way of a bonding layer (4, 14).
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: April 7, 2020
    Assignee: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Makoto Ozawa, Isao Ando
  • Patent number: 10576458
    Abstract: Provided is a new catalyst structure for exhaust gas treatment including an upper catalyst layer and a lower catalyst layer, in which the catalyst structure can sufficiently exhibit functions as a three way catalyst while maintaining gas diffusibility. Proposed is a catalyst structure including a substrate, an upper catalyst layer, and a lower catalyst layer, the catalyst structure having a first peak or a second peak at a pore volume diameter of 10 nm to 50 nm and a pore volume diameter of 50 nm to 100 nm, respectively, in the logarithmic differential pore volume distribution analyzed by a mercury intrusion porosimeter.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: March 3, 2020
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Yasunori Imada, Yunosuke Nakahara
  • Publication number: 20200053885
    Abstract: There is provided a copper foil provided with a carrier exhibiting a high peeling resistance against the developer in the photoresist developing process and achieving high stability of mechanical peel strength of the carrier. The copper foil provided with a carrier comprises a carrier; an interlayer disposed on the carrier, the interlayer having a first surface adjacent to the carrier and containing 1.0 atom % or more of at least one metal selected from the group consisting of Ti, Cr, Mo, Mn, W and Ni and a second surface remote from the carrier and containing 30 atom % or more of Cu; a release layer disposed on the interlayer; and an extremely-thin copper layer disposed on the release layer.
    Type: Application
    Filed: October 18, 2019
    Publication date: February 13, 2020
    Applicant: MITSUI MINING & SMELTING CO., LTD.
    Inventor: Yoshinori MATSUURA
  • Publication number: 20200045830
    Abstract: A method of manufacturing a multilayer wiring board is disclosed, the method being capable of separating a substrate without large local warpage of the multilayer wiring layer and thereby improving the reliability of connection in the multilayer wiring layer. This method includes providing a laminated sheet having, in sequence, a substrate, a first release layer and a metal layer; forming a first wiring layer on the metal layer; alternately stacking insulating layers and wiring layers on the laminated sheet on which the first wiring layer is formed to give a laminate provided with a multilayer wiring layer; stacking a reinforcing sheet on the laminate provided with the multilayer wiring layer while interposing a second release layer; separating the substrate from the metal layer; and separating the reinforcing sheet from the laminate provided with the multilayer wiring layer to give the multilayer wiring board.
    Type: Application
    Filed: October 6, 2016
    Publication date: February 6, 2020
    Applicant: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Yoshinori MATSUURA, Takenori YANAI, Toshimi NAKAMURA
  • Publication number: 20200045829
    Abstract: A method of manufacturing a multilayer wiring board is disclosed, the method being capable of reinforcing the multilayer wiring layer and thereby improving the reliability of connection and the flatness on the surface of the multilayer wiring layer. The method includes providing a laminated sheet having a substrate, a first release layer and a metal layer; forming a first wiring layer on the metal layer; alternately stacking insulating layers and wiring layers on the laminated sheet on which the first wiring layer is formed to give a laminate provided with a multilayer wiring layer; stacking a reinforcing sheet on the laminate provided with the multilayer wiring layer at the side opposite to the laminate sheet, while interposing the second release layer; separating the substrate from the metal layer; and separating the reinforcing sheet from the laminate provided with the multilayer wiring layer to give the multilayer wiring board.
    Type: Application
    Filed: October 6, 2016
    Publication date: February 6, 2020
    Applicant: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Yoshinori MATSUURA, Takenori YANAI, Toshimi NAKAMURA
  • Patent number: 10550321
    Abstract: Proposed is a phosphor capable of effectively inhibiting the occurrence of adverse influence of a sulfur-based gas while improving water resistance of the phosphor and effectively inhibiting the corrosion of a metallic member. A phosphor is proposed, which includes particles or a layer provided on the surface of a sulfur-containing phosphor, which contains sulfur in a host material, and containing a crystalline metal borate containing an IIA-Group element, boron, and oxygen.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: February 4, 2020
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Masaaki Inamura, Haruka Shimizu, Takayoshi Mori, Masanori Sato, Jun-ichi Itoh
  • Patent number: 10538679
    Abstract: Provided is a phosphor, which is excited by a wide band of visible light, capable of emitting near-infrared light of high intensity. The phosphor comprises a crystal phase represented by a formula (1): MCuSi2O6 (where M comprises one or more of Ba, Sr and Ca), and a crystal phase represented by a formula (2): MCuSi4O10 (where M comprises one or more of Ba, Sr and Ca), wherein a ratio ? of a diffraction peak intensity of MCuSi4O10 with respect to a diffraction peak intensity of MCuSi2O6 in an X-ray diffraction (XRD) pattern obtained by powder XRD measurement using CuK? rays is 0<??0.50.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: January 21, 2020
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Jun-ichi Itoh, Ikuhiro Ozawa, Takayoshi Mori
  • Patent number: 10526209
    Abstract: The objective of the invention is to provide an MSE-type zeolite production method such that an MSE-type zeolite can be produced in a comparatively short heating time by using inexpensive tetraethylammonium ion. The production method of the present invention comprises steps of: (1) mixing a silica source, an alumina source, an alkali source, tetraethylammonium ion, and water in such a manner as to yield a reaction mixture of the composition represented by the molar ratios indicated below: SiO2/Al2O3=between 10 and 100 inclusive (Na2O+K2O)/SiO2=between 0.15 and 0.50 inclusive K2O/(Na2O+K2O)=between 0.05 and 0.7 inclusive TEA2O/SiO2=between 0.08 and 0.20 inclusive H2O/SiO2=between 5 and 50 inclusive; (2) using the MSE-type zeolite as a seed crystal, and adding this seed crystal to the mixture at a proportion of 5 to 30% by mass with respect to the silica component in the reaction mixture; and (3) heating, under hermetic seal at a temperature of 100 to 200° C.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: January 7, 2020
    Assignees: MITSUI MINING & SMELTING CO., LTD., The University of Tokyo
    Inventors: Keiji Itabashi, Shanmugam Palani Elangovan, Sibel Sogukkanli, Tatsuya Okubo
  • Publication number: 20200008298
    Abstract: A resin composition for use in a dielectric layer of a capacitor device or a capacitor-embedded printed circuit board is provided in which the resin composition can improve stability in capacitance and insulation properties of the capacitor device under high temperature and high humidity and ensures high adhesion of the dielectric layer to the device. The resin composition comprises a resin component and a dielectric filler. The resin component comprises an epoxy resin, an active ester resin, and an aromatic polyamide resin.
    Type: Application
    Filed: March 9, 2018
    Publication date: January 2, 2020
    Applicant: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Yoshihiro YONEDA, Toshifumi MATSUSHIMA, Toshihiro HOSOI, Kenshiro FUKUDA
  • Patent number: 10518323
    Abstract: Disclosed is copper powder having an average primary particle size D of 0.15 to 0.6 ?m, having a ratio of D to DBET, D/DBET, of 0.8 to 4.0 wherein DBET is a sphere-equivalent average particle diameter calculated from a BET specific surface area, and having no layer for preventing agglomeration on the surface thereof. The copper powder is suitably produced by a method which includes a step of mixing (1) hydrazine and (2) a reactant mixture including a monovalent or divalent copper source and a liquid medium which includes water and an organic solvent having water miscibility and capable of reducing the surface tension of water, to reduce the copper source to form copper particles.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: December 31, 2019
    Assignee: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Yoichi Kamikoriyama, Shigeki Nakayama
  • Patent number: 10524360
    Abstract: A material for forming of the capacitor layer which generates no crack in drilling on the dielectric layer of the capacitor in manufacturing of a highly multilayered printed wiring board embedded a capacitor circuit. Copper clad laminate for forming of an embedded capacitor layer of a multilayered printed wiring board including an embedded capacitor circuit having a layer structure of copper layer/dielectric layer of the capacitor/copper layer in an inner layer characterized in that the composite elastic modulus Er of the resin film constituting the dielectric layer of the capacitor along the thickness direction is less than 6.1 GPa is employed.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: December 31, 2019
    Assignee: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Fujio Kuwako, Toshifumi Matsushima, Toshihiro Hosoi
  • Publication number: 20190378728
    Abstract: There is a method of manufacturing a multilayer wiring board including: alternately stacking wiring layers and insulating layers; stacking a reinforcing sheet on one surface of the resulting multilayer laminate with a soluble adhesive layer therebetween, wherein an unoccupied region without the soluble adhesive layer is provided within a facing area where the reinforcing sheet faces the multilayer laminate; allowing a liquid capable of dissolving the soluble adhesive layer to infiltrate the unoccupied region to dissolve or soften the soluble adhesive layer; and releasing the reinforcing sheet from the multilayer laminate at the soluble adhesive layer. This method enables the multilayer wiring layer to be reinforced to generate no large local warpage, thereby improving the reliable connection and the surface flatness (coplanarity) of the multilayer wiring layer. The used reinforcing sheet can be released in a significantly short time, while minimizing the stress applied to the multilayer laminate.
    Type: Application
    Filed: November 24, 2017
    Publication date: December 12, 2019
    Applicant: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Yoshinori MATSUURA, Tetsuro SATO, Toshimi NAKAMURA, Takenori YANAI
  • Publication number: 20190378727
    Abstract: There is provided a method of manufacturing a multilayer wiring board including: alternately stacking wiring layers and insulating layers; stacking a reinforcing sheet having openings on one surface of the resulting multilayer laminate with a soluble adhesive layer therebetween; contacting or infiltrating the soluble adhesive layer with a liquid capable of dissolving the soluble adhesive layer through the openings to thereby dissolve or soften the soluble adhesive layer; and releasing the reinforcing sheet from the multilayer laminate at the position of the soluble adhesive layer. This method enables the multilayer wiring layer to be reinforced so as to generate no large local warpage, thereby improving the reliable connection in the multilayer wiring layer and the flatness (coplanarity) on the surface of the multilayer wiring layer. The reinforcing sheet having finished its role can be released in a significantly short time, while minimizing the stress applied to the multilayer laminate.
    Type: Application
    Filed: November 24, 2017
    Publication date: December 12, 2019
    Applicant: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Yoshinori MATSUURA, Tetsuro SATO, Takenori YANAI, Toshimi NAKAMURA
  • Patent number: 10505183
    Abstract: Provided is a novel negative electrode for nonaqueous electrolyte secondary batteries, which is capable of improving cycle characteristics and is also capable of suppressing aggregation of active material particles in a slurry. The negative electrode active material for nonaqueous electrolyte secondary batteries contains silicon and has a D50 of 0.1 ?m to 5 ?m, and an amount of water measured at 120° C. to 300° C. by the Karl-Fischer method (referred to as “amount of water”) per specific surface area (referred to as “CS”), that is, the amount of water/CS, of 0.1 to 80 ppm/(m2/cc).
    Type: Grant
    Filed: April 2, 2013
    Date of Patent: December 10, 2019
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Daisuke Inoue, Yanko Marinov Todorov, Shinya Kagei
  • Patent number: 10492308
    Abstract: There is provided a copper foil provided with a carrier exhibiting a high peeling resistance against the developer in the photoresist developing process and achieving high stability of mechanical peel strength of the carrier. The copper foil provided with a carrier comprises a carrier; an interlayer disposed on the carrier, the interlayer having a first surface adjacent to the carrier and containing 1.0 atom % or more of at least one metal selected from the group consisting of Ti, Cr, Mo, Mn, W and Ni and a second surface remote from the carrier and containing 30 atom % or more of Cu; a release layer disposed on the interlayer; and an extremely-thin copper layer disposed on the release layer.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: November 26, 2019
    Assignee: MITSUI MINING & SMELTING CO., LTD.
    Inventor: Yoshinori Matsuura
  • Patent number: 10486231
    Abstract: A novel silver-coated copper powder, particularly a silver-coated copper powder particle having a dendritic shape, having increased electrical conductivity with no need to increase the silver content is provided. The silver-coated copper powder is composed of a silver-coated copper particle coated with a silver layer containing silver or a silver alloy, including a silver-coated copper particle having a dendritic shape, containing nitrogen (N) in the silver layer, and having a nitrogen (N) content of 0.2 to 10.0 parts by mass with respect to 100 parts by mass of the silver content.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: November 26, 2019
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Hiroyuki Morinaka, Kentaro Ochi
  • Patent number: 10483531
    Abstract: Proposed is a novel negative electrode for nonaqueous electrolyte secondary batteries in which the battery capacity does not decrease even when charging and discharging are repeated. Proposed is a silicon-containing negative electrode active material for nonaqueous electrolyte secondary batteries, comprising negative electrode active material particles which are provided with a surface layer containing carbon and titanium or aluminum on the entirety or a portion of the surface of the active material.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: November 19, 2019
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Daisuke Inoue, Yanko Marinov Todorov, Shinya Kagei