Patents Assigned to Mitsui Mining & Smelting Co., Ltd.
  • Patent number: 11913367
    Abstract: There is provided an exhaust gas purifying catalyst including a substrate and catalyst portions. The substrate includes an inflow-side cells, outflow-side cells, and porous partition walls, each partition wall separating the inflow-side cell from the outflow-side cell. The catalyst portion includes: (group A) first catalyst portions, each first catalyst portion being provided on a surface of the partition wall that faces the inflow-side cell on an upstream side in an exhaust gas flow direction; and (group B) second catalyst portions being provided on a surface of the partition wall that faces the outflow-side cell on a downstream side in the exhaust gas flow direction. Each catalyst portion of one of group A and group B includes at least one oxidizing catalyst layer and at least one reducing catalyst layer, and each catalyst portion of the other of group A and group B includes at least one oxidizing catalyst layer and/or at least one reducing catalyst layer.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: February 27, 2024
    Assignees: Mitsui Mining & Smelting Co., Ltd., HONDA MOTOR CO., LTD.
    Inventors: Hiroki Kurihara, Yusuke Nagai, Shingo Akita, Yoshinori Endo, Takeshi Mori, Takayuki Watanabe, Tomoko Tsuyama
  • Patent number: 11890853
    Abstract: There is provided a resin laminate including a first layer composed of a first resin composition and a second layer composed of a second resin composition. The first resin composition includes a resin component including an epoxy resin, a diamine compound, and a polyimide resin, and a complex metal oxide including at least two selected from Ba, Ti, etc. of 60 to 85 parts by weight based on 100 parts of the first resin composition, and the content of the polyimide resin is 20 to 60 parts by weight based on 100 parts of the resin component. The second resin composition includes a resin component including an epoxy resin and a diamine compound but is free of polyimide resin, and a complex metal oxide including at least two selected from Ba, Ti, etc. of 70 to 90 parts by weight based on 100 parts of the second resin composition.
    Type: Grant
    Filed: January 19, 2021
    Date of Patent: February 6, 2024
    Assignee: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Yoshihiro Yoneda, Toshihiro Hosoi, Tetsuro Sato
  • Publication number: 20240034670
    Abstract: There is provided a carrier-attached metal foil in which the metal layer is less likely to be released at the ends of the carrier-attached metal foil or in the cutting place(s) of a downsized carrier-attached metal foil, and moreover a decrease in the strength of the carrier is effectively suppressed. This carrier-attached metal foil includes a carrier; a release layer provided on the carrier; and a metal layer having a thickness of 0.01 ?m or more and 4.0 ?m or less provided on the release layer. The carrier has a flat region having a developed interfacial area ratio Sdr of less than 5%, and an uneven region having a developed interfacial area ratio Sdr of 5% or more and 39% or less, on at least a surface on the metal layer side, and the uneven region is provided in a linear pattern surrounding the flat region.
    Type: Application
    Filed: November 29, 2021
    Publication date: February 1, 2024
    Applicant: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Toshimi NAKAMURA, Mikiko KOMIYA, Yoshinori MATSUURA
  • Patent number: 11872540
    Abstract: An object of the present invention is to provide an exhaust gas purification catalyst composition and an exhaust gas purification catalyst, each of which includes a pyrochlore-type CeO2—ZrO2-based complex oxide having an improved oxygen storage capacity (particularly, an improved oxygen storage capacity after being exposed to a high temperature environment), and, in order to achieve the above-mentioned object, the present invention provides an exhaust gas purification catalyst composition and an exhaust gas purification catalyst, each of which contains a pyrochlore-type CeO2—ZrO2-based complex oxide that contains Y and Mg and thus exhibits an excellent oxygen storage capacity (particularly, an excellent oxygen storage capacity after being exposed to a high temperature environment).
    Type: Grant
    Filed: November 27, 2020
    Date of Patent: January 16, 2024
    Assignee: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Ryo Takeuchi, Hironori Iwakura, Shogo Sano, Yusuke Hosoi
  • Patent number: 11876070
    Abstract: A method for producing a semiconductor package, capable of suppressing damage of a device, and dissolving or softening a tacky layer quickly to peel off a reinforcing sheet, is provided. This method includes: providing a tacky sheet including a soluble tacky layer, making a first laminate, obtaining a second laminate having a second support substrate bonded to the first laminate, peeling off a first support substrate to obtain a third laminate, mounting a semiconductor chip thereon to obtain a fourth laminate, sealing a right end surface and a left end surface of the fourth laminate with sealing members and immersing a lower end surface of the fourth laminate selectively in a solution, giving a pressure difference between an inner space and the solution to allow the solution to penetrate into the internal space and dissolve or soften the soluble tacky layer, and peeling off the second support substrate.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: January 16, 2024
    Assignee: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Toshimi Nakamura, Tetsuro Sato
  • Publication number: 20230420270
    Abstract: There is provided a method for manufacturing a wiring substrate in which damage to a device layer during carrier release can be suppressed, and a photolithography process can be carried out with good accuracy on the device layer after carrier release. This method includes: providing a laminated sheet including a carrier, a release layer, a metal layer, and a device layer in order; making a cut line from a surface of the laminated sheet on the carrier side so that the cut line passes through the carrier, the release layer, and the metal layer when the laminated sheet is seen in a cross-sectional view; and removing outer edge portions outside the cut line in the carrier, the release layer, and the metal layer, thereby exposing part of a surface of the device layer on the metal layer side to form a pressurizable exposed portion for promoting release of the carrier.
    Type: Application
    Filed: August 6, 2021
    Publication date: December 28, 2023
    Applicant: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Yukiko KITABATAKE, Takenori YANAI, Yoshinori MATSUURA
  • Patent number: 11831007
    Abstract: A Si-based negative electrode active material that is capable of improving cycle characteristics, reducing or eliminating a plateau region in the discharge profile, and further improving high-rate characteristics. The Si-based negative electrode active material contains Si and a compound containing Si and a semimetal/metal element M, wherein the content of Si in the negative electrode active material is more than 50 wt %; the content of oxygen atoms (O) is less than 30 wt %; the content of the semimetal/metal element M is more than 10 wt % and less than 50 wt %, wherein in an X-ray diffraction pattern as measured by a powder X-ray diffraction (XRD) device using Cu-K?1 rays, the full width at half maximum of the peak of the (111) plane of Si is 0.25° or more; and wherein the peak intensity of the peak of the (111) plane of Si is less than 20,000 cps; and the true density is 2.5 g/cm3 or more.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: November 28, 2023
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventor: Tetsuya Mitsumoto
  • Patent number: 11824188
    Abstract: A positive electrode active material for an all-solid-state lithium secondary battery, which is capable of improving the rate characteristics, the cycle characteristics, and the initial charge and discharge efficiency even in the case where a sulfide-based solid electrolyte is used, wherein the surface of a lithium-containing composite oxide, referred to as present core particles, is coated with a compound, referred to as, LiAO compound, containing Li, A, where A represents one or more elements selected from the group consisting of Ti, Zr, Ta, Nb, Zn, W, and Al, and O; and a halogen is present on the surface of the present core particles.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: November 21, 2023
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Daisuke Washida, Hitohiko Ide
  • Patent number: 11799079
    Abstract: Provided is a 5 V class spinel type lithium nickel manganese-containing composite oxide having an operating potential of 4.5 V or more with respect to a metal Li reference potential, wherein the composite oxide is able to improve cycle characteristics while suppressing the amount of gas generated under high temperature environments and, moreover, to improve output characteristics while suppressing a shoulder on discharge at around 4.1 V in a charge and discharge curve. The spinel type lithium nickel manganese-containing composite oxide is represented by a general formula [Li(LiaNiyMnxTibMgzM?)O4-?] (where 0<a, 0<b, 0.30?y<0.60, 0<z, 0??, x=2?a?b?y?z??<1.7, 3?b/a?8, 0.11<b+z+?, 0<z/b<1, 0???0.2, and M represents one or two or more elements selected from the group consisting of Fe, Co, Ba, Cr, W, Mo, Y, Zr, Nb, P, and Ce).
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: October 24, 2023
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventor: Tetsuya Mitsumoto
  • Patent number: 11765840
    Abstract: An extremely thin copper foil with a carrier is provided that can keep stable releasability even after being heated for a prolonged time at a high temperature of 350° C. or more. The extremely thin copper foil with a carrier includes a carrier composed of a glass or ceramic material; an intermediate layer provided on the carrier and composed of at least one metal selected from the group consisting of Cu, Ti, Al, Nb, Zr, Cr, W, Ta, Co, Ag, Ni, In, Sn, Zn, Ga, and Mo; a release layer provided on the intermediate layer and including a carbon sublayer and a metal oxide sublayer or containing metal oxide and carbon; and an extremely thin copper layer provided on the release layer.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: September 19, 2023
    Assignee: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Rintaro Ishii, Takenori Yanai, Yoshinori Matsuura
  • Patent number: 11756845
    Abstract: A glass carrier-attached copper foil is provided that can achieve a desired circuit mounting board that reduces separation of a copper layer at the cut edge even if the copper foil is downsized to dimensions enabling mount of a circuit, and has an intended circuit pattern with a fine pitch. The glass carrier-attached copper foil includes a glass carrier, a release layer, and a copper layer with a thickness of 0.1 to 3.0 ?m. The glass carrier has, at least on its surface having the copper layer thereon, a plurality of flat regions each having a maximum height Rz of less than 1.0 ?m as measured in accordance with JIS B 0601-2001 and a rough region having a maximum height Rz of 1.0 to 30.0 ?m as measured in accordance with JIS B 0601-2001. The rough region has a pattern of lines that define the flat regions.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: September 12, 2023
    Assignee: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Yoshinori Matsuura, Takenori Yanai, Toshimi Nakamura
  • Patent number: 11745172
    Abstract: A substrate (11) of an exhaust gas purification catalyst (10) includes inflow-side cells (21), outflow-side cells (22), and porous partition walls (23), each separating the inflow-side cell and the outflow-side cell. Catalyst portions (14, 15) are provided on the surfaces of the partition walls that each face the inflow-side cell and/or the surfaces of the partition walls that each face the outflow-side cell. In a cross section vertical to an exhaust gas flow direction, the percentage of the total area of voids, each void satisfying the expression L/{2(?S)1/2}?1.1 (wherein L is the perimeter of the void in the cross section, and S is the area of the void in the cross section), is greater than 10% to 30% or less based on the apparent area of the catalyst portion present on the partition wall. The content of zirconium element in terms of oxide (amount of ZrO2) in the catalyst portions is from 35 mass % to 85 mass %.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: September 5, 2023
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Yusuke Nagai, Shingo Akita, Hiroki Kurihara, Yoshinori Endo
  • Publication number: 20230276579
    Abstract: Provided is a method for manufacturing a copper-clad laminate in which a copper foil and a resin are joined together with high heat-resistant adhesion force though a fluororesin, which is a low dielectric constant thermoplastic resin, is used. This method includes providing a surface-treated copper foil including a copper foil and a zinc-containing layer on at least one surface of the copper foil, and affixing a sheet-shaped fluororesin to the zinc-containing layer side of the surface-treated copper foil. The zinc-containing layer is composed of Zn and a transition element M having a melting point of 1200° C. or more. When the interface between the copper foil and the zinc-containing layer is subjected to elemental analysis by XPS, the content of Zn is 10 wt % or less, and the Zn/M weight ratio, the ratio of the content of Zn to the content of the transition element M, is 0.2 to 0.6.
    Type: Application
    Filed: July 14, 2021
    Publication date: August 31, 2023
    Applicant: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Daisuke NAKAJIMA, Shota KAWAGUCHI
  • Publication number: 20230276571
    Abstract: Provided is a copper-clad laminate in which a copper foil and a resin are joined together with high heat-resistant adhesion force though a fluororesin is used. This copper-clad laminate includes a surface-treated copper foil including a copper foil and a zinc-containing layer on at least one surface of the copper foil; and a sheet-shaped fluororesin on the zinc-containing layer side of the surface-treated copper foil. The zinc-containing layer is composed of Zn and a transition element M having a melting point of 1200° C. or more. When the interface between the copper foil and the zinc-containing layer is subjected to elemental analysis by GD-OES, the emission intensity ratio IZn/ICu of the emission intensity of Zn to that of Cu is 3.0×10?3 or less, and the emission intensity ratio IZn/IM of the emission intensity of Zn to that of the transition element M is 0.30 to 0.50.
    Type: Application
    Filed: July 14, 2021
    Publication date: August 31, 2023
    Applicant: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Daisuke NAKAJIMA, Shota KAWAGUCHI
  • Publication number: 20230238181
    Abstract: A double-sided copper-clad laminate that includes an adhesive layer and a copper foil in order on each of both surfaces of a resin film, the resin film is in a cured state at 25° C., and each of the copper foils has a maximum peak height Sp of 0.05 ?m or more and 3.3 ?m or less as measured in accordance with ISO 25178 on a surface on a side being in contact with the adhesive layer.
    Type: Application
    Filed: April 4, 2023
    Publication date: July 27, 2023
    Applicant: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Ryuji ISHIZUKA, Yoshihiro YONEDA, Toshihiro HOSOI, Yuji KAGEYAMA
  • Patent number: 11699809
    Abstract: Provided is a sulfide-based solid electrolyte which is capable of suppressing the generation of hydrogen sulfide caused by reaction with moisture even when in contact with dry air in a dry room or the like, and capable of maintaining lithium ion conductivity. Proposed is a sulfide-based solid electrolyte for a lithium secondary battery, wherein the surface of a compound containing lithium, phosphorus, sulfur, and halogen, and having a cubic argyrodite-type crystal structure is coated with a compound containing lithium, phosphorus, and sulfur, and having a non-argyrodite-type crystal structure.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: July 11, 2023
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Hideo Uesugi, Norihiko Miyashita, Hitohiko Ide, Takahiro Ito, Takashi Chikumoto, Takashi Muranaka
  • Patent number: 11688879
    Abstract: A sulfide-based solid electrolyte particle having a crystal phase of a cubic argyrodite-type crystal structure composed of Li, P, S and a halogen (Ha. The proposed sulfide-based solid electrolyte particle has a feature such that the ratio (ZHa2/ZHa1) of an element ratio ZHa2 of the halogen (Ha) at the position of 5 nm in depth from the particle surface to an element ratio ZHa1 of the halogen (Ha) at the position of 100 nm in depth from the particle surface is 0.5 or lower, as measured by XPS; and the ratio (ZO2/ZA2) of an element ratio ZO2 of oxygen to the total ZA2 of element ratios of phosphorus (P), sulfur (S), oxygen (O) and the halogen (Ha) at the position of 5 nm in depth from the particle surface is 0.5 or higher, as measured by XPS.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: June 27, 2023
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Tsukasa Takahashi, Takashi Chikumoto, Takahiro Ito
  • Patent number: 11670455
    Abstract: There is provided a double-sided copper-clad laminate for forming a capacitor that can exhibit excellent properties in voltage endurance and peel strength, while ensuring high capacitor capacity, when used as a capacitor. This double-sided copper-clad laminate includes an adhesive layer and a copper foil in order on each of both surfaces of a resin film, the resin film is in a cured state at 25° C., and each of the copper foils has a maximum peak height Sp of 0.05 ?m or more and 3.3 ?m or less as measured in accordance with ISO 25178 on a surface on a side being in contact with the adhesive layer.
    Type: Grant
    Filed: June 4, 2021
    Date of Patent: June 6, 2023
    Assignee: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Ryuji Ishizuka, Yoshihiro Yoneda, Toshihiro Hosoi, Yuji Kageyama
  • Patent number: 11652216
    Abstract: An electrode catalyst layer for fuel cells capable of effectively preventing reduction of cell voltage in a high current density region. The electrode catalyst layer contains a catalyst-on-support composed of a support made of a conductive inorganic oxide having a catalyst supported thereon and a hydrophilic material. The hydrophilic material is an agglomerate including hydrophilic conductive particles. The content of the hydrophilic material in the catalyst layer is 2 mass % or higher and lower than 20 mass % relative to the sum of the support and the hydrophilic material. The ratio of the particle size d1 of the hydrophilic particles to the particle size D of the catalyst-on-support is 0.5 to 3.0. The ratio of the particle size d2 of the hydrophilic material to the thickness T of the catalyst layer is 0.1 to 1.2.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: May 16, 2023
    Assignee: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Satoshi Mogi, Hiromu Watanabe, Ryoma Tsukuda, Naohiko Abe
  • Patent number: 11642870
    Abstract: A glass carrier-attached copper foil is provided that is suitable for production of a desired circuit mounting board ensuring electric conduction over the entire copper layer, reducing separation of the copper layer at the cut edge even if the copper foil is downsized, and having an intended circuit pattern with a fine pitch. The glass carrier-attached copper foil includes a glass carrier, a release layer provided on the glass carrier, and a copper layer provided on the release layer. The release layer has a function to enable release of the copper layer from the glass carrier. The glass carrier-attached copper foil has a plurality of releasable regions including the release layer and an unreleasable region not including the release layer. The unreleasable region has a pattern defining the releasable regions.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: May 9, 2023
    Assignee: MITSUI MINING & SMELTING CO., LTD.
    Inventor: Rintaro Ishii