Patents Assigned to Japan Metals and Chemicals Co., Ltd.
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Publication number: 20230076463Abstract: A hydrogen storage alloy suitable for a negative electrode of an alkaline storage battery is provided. The hydrogen storage alloy provided is a hydrogen storage alloy used for an alkaline storage battery that has, as a main phase, one or two crystal structures selected from an A2B7-type structure and an AB3-type structure, and that is represented by a general formula: (La1-a-bCeaSmb)1-cMgcNidAleCrf (where suffixes a, b, c, d, e, and f in this formula (1) meet the following conditions: 0<a?0.15; 0?b?0.15; 0.17?c?0.32; 0.02?e?0.10; 0?f?0.05; and 2.95?d+e+f?3.50.Type: ApplicationFiled: February 16, 2021Publication date: March 9, 2023Applicant: JAPAN METALS AND CHEMICALS CO., LTD.Inventors: Takao SAWA, Saki NOTOYAMA, Tomoki SOUMA, Katsuyuki KUDO, Takuya WATANABE
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Patent number: 11495804Abstract: An air electrode catalyst for an air secondary battery includes a pyrochlore-type composite oxide having two or more crystal structures having a different amount of oxygen. A battery, according to some embodiments, includes an electrode group including an air electrode and a negative electrode stacked with a separator therebetween, and a container accommodating the electrode group along with an alkali electrolyte solution, wherein the air electrode includes the air electrode catalyst. The air electrode catalyst may have a pyrochlore-type composite oxide having a crystal structure represented by Bi2Ru2O6.92 and a crystal structure represented by Bi2Ru2O7.33.Type: GrantFiled: February 4, 2020Date of Patent: November 8, 2022Assignees: FDK CORPORATION, JAPAN METALS AND CHEMICALS CO., LTD.Inventors: Shohei Unoki, Takeshi Kajiwara, Takahiro Endo, Shigekazu Yasuoka, Yoshikatsu Watanabe
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Publication number: 20220190327Abstract: A hydrogen storage alloy suitable for a negative electrode of an on-board alkaline storage battery, an alkaline storage battery using this hydrogen storage alloy, and a vehicle; wherein a fine-grained hydrogen storage alloy is used for an alkaline storage battery that has a crystal structure of an A2B7-type structure as a main phase and is represented by a general formula: (La1-aSma)1-bMgbNicAldCre (where suffixes a, b, c, d, and e meet the following conditions: 0?a?0.35, 0.15?b?0.30, 0.02?d?0.10, 0?e?0.10, 3.20?c+d+e?3.50, and 0<a+e), and an alkaline storage battery using this hydrogen storage alloy for a negative electrode. A vehicle also includes this alkaline storage battery as an electricity supply source for a motor.Type: ApplicationFiled: February 28, 2020Publication date: June 16, 2022Applicants: JAPAN METALS AND CHEMICALS CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Takao SAWA, Saki NOTOYAMA, Tomoki SOUMA, Katsuyuki KUDO, Takuya WATANABE, Masato HOZUMI, Motoyoshi OKUMURA, Masashi KODAMA, Takuro KIKUCHI, Takeo OKANISHI, Atsushi MINAGATA, Shuhei MOCHIDA, Hiroyuki SASAKI, Satoshi KONO
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Publication number: 20210408535Abstract: A hydrogen storage alloy suitable for a negative electrode of an on-board alkaline storage battery, and an alkaline storage battery using the alloy, which has an AB3-type crystal structure as a main phase, represented by: (SmxLayRz)1?a?bMgaTbNicCodMe. (R is selected from Pr, Nd; T is selected from Ti, Zr, Hf; M is selected from V, Nb, Ta, Cr, Mo, W, Mn, Fe, Cu, Al, Si, P, B; the following conditions are met: 0<x<1.0, 0<y<1.0, 0.8?x+y?1.0, x+y+z=1.0; 0.93?(x?y)ยท(1?a?b)+4.5(a+b)?1.62, 0<a?0.45, 0?b?0.05, 0?d?0.7, 0?e?0.15, 2.85?c+d+e?3.15 and 0.01?d+e).Type: ApplicationFiled: October 1, 2019Publication date: December 30, 2021Applicants: JAPAN METALS AND CHEMICALS CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takao SAWA, Saki NOTOYAMA, Naoyoshi TERASHITA, Katsuyuki KUDO, Makio KON, Masashi KODAMA, Hiroshi NISHIYAMA
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Patent number: 8475608Abstract: Magnesium-based hydrogen storage alloys having metallic magnesium (Mg) and a magnesium-containing intermetallic compound (MgxMy wherein y is 1?x) and containing not less than 60 mass-% of magnesium in total, and having a phase of a primarily crystallized magnesium-containing intermetallic compound in its solidification structure.Type: GrantFiled: November 25, 2005Date of Patent: July 2, 2013Assignee: Japan Metals and Chemicals Co., Ltd.Inventors: Masahito Osawa, Hidenori Tomioka, Naoyoshi Terashita, Noboru Hayami, Shigeru Tsunokake
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Patent number: 8141739Abstract: [Object] A safe hydrogen storage tank in a highly reliable form where it is difficult for fatigue failure to occur is provided as a hydrogen storage tank where a cartridge is filled with a hydrogen occluding substance and contained within an integrally molded liner made of a metal.Type: GrantFiled: June 15, 2007Date of Patent: March 27, 2012Assignees: Samtech Corporation, Japan Metals & Chemicals Co., Ltd.Inventors: Yoshiki Sakaguchi, Hideaki Nishiwaki, Naoki Sakaguchi, Takeshi Yamamoto, Shigeru Tsunokake, Tatsuya Fuura, Shogo Watanabe, Yasumasa Maeda
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Patent number: 7988800Abstract: In order to accurately and efficiently alloy a Mg-REM-Ni based hydrogen-absorbing alloy in accordance with a target composition, which was difficult in the industrial production by the conventional technique, a rare earth element starting material and a nickel starting material are firstly melted in a melting furnace to form a melt of REM-Ni alloy, and then a magnesium starting material is added to the alloy melt and an interior of the melting furnace is kept at a given pressure to form a melt of Mg-REM-Ni alloy, and thereafter the alloy melt is cooled and solidified at a given cooling rate to produce a Mg-REM-Ni based hydrogen-absorbing alloy.Type: GrantFiled: February 21, 2005Date of Patent: August 2, 2011Assignee: Japan Metals and Chemicals Co., Ltd.Inventors: Masahito Osawa, Katsuyuki Kudo, Akihito Maeda, Seiji Takahashi
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Publication number: 20090007728Abstract: In a method for producing an alloy containing a metal of a low melting point, a low boiling point and a high vapor pressure such as Mg, Ca, Li, Zn, Mn, Sr or the like, a helium containing gas is used as an atmosphere gas for the melting. As a result, the alloy containing the above metal can be produced as an alloy having a targeted chemical composition precisely and safely at a low cost without causing the risk of firing, contamination or the like by active metal fine powder being vaporized. Furthermore, by using the helium containing gas as the atmosphere gas, the quench-solidification of the molten metal can be conducted due to a high thermal conductivity inherent to the helium gas, so that a special alloy can be produced even by the usual melting apparatus.Type: ApplicationFiled: March 2, 2006Publication date: January 8, 2009Applicants: JAPAN METALS AND CHEMICALS CO., LTD, National Institute of Advanced Industrial Science and TechnologyInventors: Etsuo Akiba, Hirotoshi Enoki, Naoyoshi Terashita, Shigeru Tsunokake
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Publication number: 20070119524Abstract: In order to accurately and efficiently alloy a Mg-REM-Ni based hydrogen-absorbing alloy in accordance with a target composition, which was difficult in the industrial production by the conventional technique, a rare earth element starting material and a nickel starting material are firstly melted in a melting furnace to form a melt of REM-Ni alloy, and then a magnesium starting material is added to the alloy melt and an interior of the melting furnace is kept at a given pressure to form a melt of Mg-REM-Ni alloy, and thereafter the alloy melt is cooled and solidified at a given cooling rate to produce a Mg-REM-Ni based hydrogen-absorbing alloy.Type: ApplicationFiled: February 21, 2005Publication date: May 31, 2007Applicant: JAPAN METALS AND CHEMICALS CO., LTD.Inventors: Masahito Osawa, Katsuyuki Kudo, Akihito Maeda, Seiji Takahashi
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Publication number: 20060073066Abstract: Magnesium-based hydrogen storage alloys comprise metallic magnesium (Mg) and a magnesium-containing intermetallic compound (MgxMy wherein y is 1-x) and contain not less than 60 mass-% of magnesium in total, and have a phase of a primarily crystallized magnesium-containing intermetallic compound in its solidification structure.Type: ApplicationFiled: November 25, 2005Publication date: April 6, 2006Applicant: Japan Metals and Chemicals Co., Ltd.Inventors: Masahito Osawa, Hidenori Tomioka, Naoyoshi Terashita, Noboru Hayami, Shigeru Tsunokake
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Patent number: 6692872Abstract: There is provided a metal hydride negative electrode having excellent discharge characteristics at the beginning of a charge and discharge cycle, excellent gas absorptivity during charge, and an excellent cycle life, and a method for producing the same without the need of any complicated producing processes. The metal hydride negative electrode (1) is used for a nickel hydride cell, and comprises a substrate (2) and a negative electrode plate (3) which is formed by applying a hydrogen absorbing alloy composition containing a hydrogen absorbing alloy powder, a conductive material, a binder and a dispersing agent on the substrate, wherein the negative electrode plate has a surface portion (4) which has a predetermined water repellent rate and a plurality of convex portions.Type: GrantFiled: June 19, 2001Date of Patent: February 17, 2004Assignees: Honda Giken Kogyo Kabushiki Kaisha, Japan Metals & Chemicals Co., Ltd., Sanoh Kogyo Kabushiki KaishaInventors: Hiroyuki Suzuki, Kyoichi Ariga, Kenichi Kobayashi, Hiroshi Ogura, Nobuyuki Muromachi, Mieko Nagamori, Hideki Toshima
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Publication number: 20020197181Abstract: Magnesium-based hydrogen storage alloys comprise a metallic magnesium (Mg) and a magnesium-containing intermetallic compound (MgxMy wherein y is 1-x) and contain not less than 60 mass % of magnesium in total, and have a phase of a primarily crystallized magnesium-containing intermetallic compound in its solidification structure.Type: ApplicationFiled: April 25, 2002Publication date: December 26, 2002Applicant: JAPAN METALS AND CHEMICALS CO., LTD.Inventors: Masahito Osawa, Hidenori Tomioka, Naoyoshi Terashita, Noboru Hayami, Shigeru Tsunokake
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Patent number: 5968449Abstract: An object of the present invention is to provide an iron base Si--Mn alloy or an iron base Si--Mn--Ni alloy which can be easily crushed and can be manufactured in large quantity, and alloy powder thereof.An iron base Si--Mn--Ni alloy having good crushability and alloy powder thereof, comprising:C: 0.40 to 1.20% by weight,Si: 5.0 to 12.0% by weight,Mn: 19.0 to 42.0 % by weight, or Ni: not more than 30% by weight, and the balance being Fe, with the following equations satisfied: Si.gtoreq.11.89-2.92 C-0.077 Mn, Vickers hardness (Hv).gtoreq.550, and area ratio of dendrite structure .ltoreq.50%.An iron base Si--Mn--Ni alloy having good crushability and alloy powder thereof, comprising:C: 0.40 to 1.20% by weight,Si: 5.0 to 12.0% by weight,Mn: 19.0 to 42.0% by weight, or Ni: not more than 30% by weight, and the balance being Fe, with the following equations satisfied: Si.ltoreq.8.3 C+0.14 Mn, and relative permeability (.mu.).ltoreq.1.10.Type: GrantFiled: January 20, 1998Date of Patent: October 19, 1999Assignees: Nippon Steel Welding Products & Engineering Co., Ltd., Japan Metals & Chemicals Co., Ltd.Inventors: Koichi Aoki, Atsuo Onoda, Masao Kamada, Hitoshi Nishimura, Kuniteru Suzuki, Shunji Kikuchi
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Patent number: 5938910Abstract: Electrolytic manganese dioxide having a BET specific surface area of less than 30 m.sup.2 /g and a suspensiveness of less than 50 mg/liter is used for alkaline manganese batteries and manganese batteries to make them excellent both in initial performance and storability. The electrolytic manganese dioxide may be made by a suspension method or a clarification method.Type: GrantFiled: August 29, 1997Date of Patent: August 17, 1999Assignee: Japan Metals & Chemicals Co., Ltd.Inventors: Hisao Takehara, Yoshihiro Nakayama, Ryoichi Shimizugawa, Tsutomu Kishikawa, Takumi Murai, Fumiya Takahashi, Koh Takahashi
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Patent number: 5916519Abstract: To provide a hydrogen storage alloy usable as a negative electrode having a long life and good high-discharge characteristics. Hydrogen storage alloy for cell wherein its general expression is as follows:RNi.sub.a Co.sub.b Al.sub.c Mn.sub.d Fe.sub.e(where R is a mixture of rare earth elements and contains 25.about.75 wt. % La; 3.7.ltoreq.a.ltoreq.4.0, 0.1.ltoreq.b.ltoreq.0.4, 0.20.ltoreq.c.ltoreq.0.4, 0.30.ltoreq.d.ltoreq.0.45, 0.2.ltoreq.e.ltoreq.0.4, 0.5.ltoreq.b+c.ltoreq.0.7, and 5.0.ltoreq.a+b+c+d+e.ltoreq.5.0).Type: GrantFiled: July 16, 1996Date of Patent: June 29, 1999Assignee: Japan Metals & Chemicals Co., Ltd.Inventors: Nobuyuki Saito, Masashi Takahashi, Takashi Sasai
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Patent number: 5807532Abstract: As a technique of stably producing a crystalline spinel type LiMn.sub.2 O.sub.4 having a large specific surface area by microscopically uniform mixing at atomic level of constitutional elements without causing crystal defects, there is proposed a method wherein water-soluble lithium salt and manganese nitrate (Mn(NO.sub.3).sub.2) are dissolved in water and then non-ion water-soluble high polymer containing no metal ion is added as a cation carried body to the resulting aqueous mixed solution and thereafter water is removed from the aqueous mixed solution under heating, preferably at a temperature of not lower than 100.degree. C. to synthesize crystalline spinel type LiMn.sub.2 O.sub.4.Type: GrantFiled: September 24, 1996Date of Patent: September 15, 1998Assignee: Japan Metals and Chemicals Co., Ltd.Inventors: Koh Takahashi, Takeshi Sotomura, Keiji Satoh
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Patent number: 5749935Abstract: Manganese byproducts produced in the course of manufacturing electrolytic manganese dioxide provide a novel manganese fertilizer having a fertilizer response that can operate both instantaneously and slow-release. A manganese fertilizer contains manganese byproducts and has 3 to 20 wt % citric acid-soluble manganese (C--MnO) and 0.5 to 7.0 wt % water-soluble manganese (W--MnO).Type: GrantFiled: August 8, 1994Date of Patent: May 12, 1998Assignee: Japan Metals & Chemicals Co., Ltd.Inventors: Hisao Takehara, Ryoichi Shimizugawa, Toshihiko Tokai
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Patent number: 5746902Abstract: There is provided manganese dioxide to be suitably used for alkaline manganese batteries and manganese batteries to make them excellent both in the initial performance and the storability. There is also provided a method of manufacturing such manganese dioxide. The electrolytic manganese dioxide has a BET specific surface area of less than 30 m.sup.2 /g (preferably less than 27 m.sup.2 /g) and a suspensiveness of less than 50 mg/liter. A method of manufacturing electrolytic manganese dioxide may be a suspension method, wherein manganese oxide is suspended at a rate of 0.01 to 0.2 g/liter in an electrolytic bath containing sulfuric acid at a concentration of 0.4 to 0.55 mol/liter and electrolyzed to produce electrolytic manganese dioxide with an anodic current density of 0.4 to 3.0 A/dm.sup.2 and an electrolytic temperature of 93.degree. to 103.degree. C., the relationship between the anodic current density and the electrolytic temperature being expressed by 103.gtoreq.y.gtoreq.1.67x+92.Type: GrantFiled: December 19, 1995Date of Patent: May 5, 1998Assignee: Japan Metals & Chemicals Co., Ltd.Inventors: Hisao Takehara, Yoshihiro Nakayama, Ryoichi Shimizugawa, Tsutomu Kishikawa, Takumi Murai, Fumiya Takahashi, Koh Takahashi
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Patent number: 5561833Abstract: To provide a raw material for high oxygen chromium targets containing oxygen in a form capable of effectively preventing the dust ejection phenomenon. A raw material for high oxygen chromium targets comprising chromium crystalline particles dispersed in metallic chromium wherein at least a portion of the surface of all the crystals constituting the oxide crystalline particles is in contact with the matrix of the metallic chromium. A method of producing a raw material for high oxygen chromium targets comprising chromium oxide crystalline particles dispersed in metallic chromium characterized by heat-treating metallic chromium containing a solid solution of oxygen or oxide particles as a starting material, and precipitating or crystal-growing the oxygen or oxide particles as chromium oxide crystalline particles having a particle size of 0.1 to 100 .mu.m, thereby obtaining a raw material for chromium targets.Type: GrantFiled: November 21, 1994Date of Patent: October 1, 1996Assignee: Japan Metals & Chemicals Co., Ltd.Inventors: Hidenori Tomioka, Kenichi Kobayashi, Manabu Takahashi, Tatsuhiko Fujinuma
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Patent number: 5482614Abstract: An EL lamp having a higher luminescence efficiency and a process for manufacturing the same are provided. The EL element includes an aluminum foil having at least one specularly polished surface, an anodized oxide film formed on the specularly polished surface of the aluminum foil, a light emitting EL layer formed directly on the film, and a transparent electrode formed on the light emitting EL layer. The process for manufacturing an EL lamp includes the steps of polishing specularly at least one of the surfaces of an aluminum foil, forming an anodized oxide film on the specularly polished surface of the aluminum foil, and forming directly on the aluminum oxide film a light emitting EL layer and a transparent electrode.Type: GrantFiled: August 1, 1994Date of Patent: January 9, 1996Assignees: Stanley Electric Co., Ltd., Japan Metals & Chemicals Co., Ltd.Inventors: Kenichi Kondo, Takahiro Saida, Shuichi Taya, Toyoshi Iida, Takeshi Sotomura, Yuko Fujii, Keiji Sato, Mamoru Takahashi, Sadayasu Yamakawa, Shunichi Osawa