Patents by Inventor Hiromu Matsuda
Hiromu Matsuda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7425223Abstract: To provide an electrochemical device with a layer structure causing no deterioration of characteristics of materials, in the method for preparing an electrochemical device comprising a first current collector, a first electrode active material layer, a solid electrolyte layer, a second electrode active material layer and a second current collector, all of which are accumulated, the first electrode active material layer, the second electrode active material layer or the solid electrolyte layer is formed by supplying atoms, ions or clusters constituting the first electrode active material layer, the second electrode active material layer or the solid electrolyte layer to the substrate, while irradiating electrons or electromagnetic waves with energy prescribed according to the composition of the first electrode active material layer, the second electrode active material layer or the solid electrolyte layer.Type: GrantFiled: September 2, 2002Date of Patent: September 16, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroshi Higuchi, Shuji Ito, Kazuya Iwamoto, Masaya Ugaji, Hiromu Matsuda, Shinji Mino, Yasuyuki Shibano, Junichi Inaba, Kazuyoshi Honda, Sadayuki Okazaki, Hitoshi Sakai, Yoriko Takai
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Patent number: 7094500Abstract: A secondary battery comprising: a substrate; a first current collector; a first electrode; a solid electrolyte; a second electrode; and a second current collector; the first current collector being formed on the substrate and serving as a current collector of the first electrode, the first electrode being formed on the first current collector, the solid electrolyte being formed on the first electrode, the second electrode being formed on the solid electrolyte, the second current collector being formed on the second electrode and serving as a current collector of the second electrode, at least one electrode selected from the group consisting of the first electrode and the second electrode containing at least one material selected from the group consisting of an ion conductive material and an electron conductive material.Type: GrantFiled: April 22, 2002Date of Patent: August 22, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masaya Ugaji, Kazuya Iwamoto, Shuji Ito, Shinji Mino, Hiromu Matsuda, Hiroshi Higuchi
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Patent number: 6733927Abstract: In a non-aqueous electrolyte secondary battery, the reaction between the non-aqueous electrolyte and the electrode is suppressed to reduce a decrease in the discharge capacity with the charge/discharge cycle progress and the deterioration of battery characteristics during high-temperature storage. At least one of a chargeable and dischargeable positive electrode, a non-aqueous electrolyte containing a lithium salt, and a chargeable and dischargeable negative electrode in a non-aqueous electrolyte secondary battery contains at least one selected from the group consisting of a phosphate having three aliphatic hydrocarbon groups having 7 to 12 carbon atoms, a phosphate having two aliphatic hydrocarbon groups having 1 to 12 carbon atoms or an aromatic hydrocarbon group, and a phosphate having an aliphatic hydrocarbon group having 1 to 12 carbon atoms or an aromatic hydrocarbon group.Type: GrantFiled: March 23, 2001Date of Patent: May 11, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hideharu Takezawa, Yasuhiko Bito, Hiromu Matsuda, Yoshinori Toyoguchi
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Patent number: 6713213Abstract: In order to obtain a non-aqueous electrolyte secondary battery having a high capacity and excellent charge/discharge cycle characteristics, a halogen-containing organic magnesium compound represented by the formula (1): RMgX, where R is an aliphatic hydrocarbon group or an aromatic hydrocarbon group, X is fluorine atom, chlorine atom, bromine atom or iodine atom; or the formula (2): RMgY, where R is an aliphatic hydrocarbon group or an aromatic hydrocarbon group, Y is —ClO4−, —BF4−, —PF6− or —CF3SO3− is added to the non-aqueous electrolyte.Type: GrantFiled: June 21, 2001Date of Patent: March 30, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shuji Ito, Osamu Yamamoto, Teruhisa Kanbara, Hiromu Matsuda
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Publication number: 20040058237Abstract: To provide an electrochemical device with a layer structure causing no deterioration of characteristics of materials, in the method for preparing an electrochemical device comprising a first current collector, a first electrode active material layer, a solid electrolyte layer, a second electrode active material layer and a second current collector, all of which are accumulated, the first electrode active material layer, the second electrode active material layer or the solid electrolyte layer is formed by supplying atoms, ions or clusters constituting the first electrode active material layer, the second electrode active material layer or the solid electrolyte layer to the substrate, while irradiating electrons or electromagnetic waves with energy prescribed according to the composition of the first electrode active material layer, the second electrode active material layer or the solid electrolyte layer.Type: ApplicationFiled: September 18, 2003Publication date: March 25, 2004Inventors: Hiroshi Higuchi, Shuji Ito, Kazuya Iwamoto, Masaya Ugaji, Hiromu Matsuda, Shinji Mino, Yasuyuki Shibano, Junichi Inaba, Kazuyoshi Honda, Sadayuki Okazaki, Hitoshi Sakai, Yoriko Takai
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Publication number: 20030175585Abstract: A secondary battery comprising: a substrate; a first current collector; a first electrode; a solid electrolyte; a second electrode; and a second current collector; the first current collector being formed on the substrate and serving as a current collector of the first electrode, the first electrode being formed on the first current collector, the solid electrolyte being formed on the first electrode, the second electrode being formed on the solid electrolyte, the second current collector being formed on the second electrode and serving as a current collector of the second electrode, at least one electrode selected from the group consisting of the first electrode and the second electrode containing at least one material selected from the group consisting of an ion conductive material and an electron conductive material.Type: ApplicationFiled: January 17, 2003Publication date: September 18, 2003Inventors: Masaya Ugaji, Kazuya Iwamoto, Shuji Ito, Shinji Mino, Hiromu Matsuda, Hiroshi Higuchi
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Patent number: 6620549Abstract: An alkaline storage battery, a positive electrode material for the alkaline storage battery, and a method of preparation for the positive electrode material are disclosed. The positive electrode material is made up of nickel hydroxide particles that have cobalt oxyhydroxide on their surface. The particles may be prepared by a process in which &agr;-cobalt hydroxide adhered to the surface of the nickel hydroxide particles is oxidized to cobalt oxyhydroxide. The battery has a superior rate of utilization of active material, cycle life, and discharge characteristics.Type: GrantFiled: May 20, 2002Date of Patent: September 16, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Tetsuo Nanno, Kazuhiro Ota, Hiromu Matsuda
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Patent number: 6576370Abstract: The present invention provides a positive electrode, which contains at least one organic sulfide compound selected from the group consisting of a thiolato compound and a thiol compound, and at least one selected from the group consisting of sulfur and a lithium sulfide represented by Formula (1): (LixS)n, where 0<x≦2 and n>0, a method of manufacturing the positive electrode, and a lithium battery using the positive electrode. Compared with the prior art lithium battery, the lithium battery using the positive electrode of the present invention has a greater capacity and a higher voltage. The positive electrode of the present invention effectively suppresses escape of the positive electrode active material from the positive electrode during charge and discharge operations and thus actualizes a secondary battery of high energy density having a less decrease in service capacity.Type: GrantFiled: April 21, 2000Date of Patent: June 10, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yasushi Nakagiri, Yasuhiko Bito, Hiromu Matsuda, Tadashi Sotomura, Yoshinori Toyoguchi
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Patent number: 6562516Abstract: Disclosed is a nickel positive electrode for alkaline storage batteries with superb utilization of nickel hydroxide in an atmosphere from room temperature to high temperature. The positive electrode comprises a nickel hydroxide particle or a nickel hydroxide particle with one or more elements other than Ni incorporated therein, a coating layer which comprises a compound of cobalt having a mean valence over 2 and which coats the nickel hydroxide particle, and a compound of at least one element selected from the group consisting of Ca, Sr, Ba, Cu, Ag, Cd, Y, Yb, Ce, Sm, Gd and Er.Type: GrantFiled: March 6, 2001Date of Patent: May 13, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kazuhiro Ohta, Yukihiro Okada, Hiromu Matsuda, Yoshinori Toyoguchi
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Patent number: 6558841Abstract: The purpose of the present invention is to provide a negative electrode for non-aqueous electrolyte rechargeable batteries of which the capacity is high and of which the decrease of the discharging capacity through the cycles is low by improving the electron conductivity of the surfaces of the active material particle for the negative electrode. In order to achieve this purpose, an active material in the form of a composite particle comprising,a phase that can store a lithium ion and includes at least Sn and a phase that cannot store a lithium ion and an electronically conductive material coating part of or the entire surfaces of the above described particle, is used for the negative electrode in the present invention.Type: GrantFiled: August 29, 2000Date of Patent: May 6, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yasushi Nakagiri, Toshitada Sato, Hideharu Takezawa, Hiromu Matsuda
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Patent number: 6544687Abstract: A solid solution represented by the formula (1): LixM1yM2z is used as a negative electrode active material for a non-aqueous electrolyte secondary battery comprising a chargeable and dischargeable positive electrode, a non-aqueous electrolyte and a chargeable and dischargeable negative electrode. In the formula (1), M1 represents at least one element selected from the group consisting of Ti, Zr, Mn, Co, Ni, Cu and Fe, and M2 represents at least one element selected from the group consisting of Si and Sn, and 0≦x<10, 0.1≦y≦10 and z=1.Type: GrantFiled: March 1, 2001Date of Patent: April 8, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Toshitada Sato, Hideharu Takezawa, Yasuhiko Bito, Hiromu Matsuda, Yoshinori Toyoguchi
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Publication number: 20030054258Abstract: In order to obtain a non-aqueous electrolyte secondary battery having a high capacity and excellent charge/discharge cycle characteristics, a halogen-containing organic magnesium compound represented by the formula (1): RMgX, where R is an aliphatic hydrocarbon group or an aromatic hydrocarbon group, X is fluorine atom, chlorine atom, bromine atom or iodine atom; or the formula (2): RMgY, where R is an aliphatic hydrocarbon group or an aromatic hydrocarbon group, Y is —ClO4−, —BF4−, —PF6− or —CF3SO3− is added to the non-aqueous electrolyte.Type: ApplicationFiled: June 21, 2001Publication date: March 20, 2003Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Shuji Ito, Osamu Yamamoto, Teruhisa Kanbara, Hiromu Matsuda
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Publication number: 20020172758Abstract: The present invention provides an alkaline storage battery which is superior in the rate of utilization of the active material, cycle life, and discharge characteristic through a more simplified way of preparation of a high-performance positive active material by addition of a smaller quantity of a cobalt compound than conventional methods. The alkaline storage battery is obtained by employing an active material prepared by rendering &agr;-type cobalt hydroxide adhere on the surface of nickel hydroxide particles and then treating with an aqueous solution of sodium hypochlorite in the positive plate.Type: ApplicationFiled: May 20, 2002Publication date: November 21, 2002Inventors: Tetsuo Nanno, Kazuhiro Ota, Hiromu Matsuda
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Patent number: 6444361Abstract: Disclosed is an active material for a hydrogen storage alloy electrode which can provide a nickel-metal hydride storage battery having a longer cycle life than any conventional battery. The active material has a core alloy of a hydrogen storage alloy and a surface layer comprising iron compound formed on the surface of the core alloy.Type: GrantFiled: June 12, 2000Date of Patent: September 3, 2002Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Katsunori Komori, Hiromu Matsuda, Yoshinori Toyoguchi
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Patent number: 6423448Abstract: Disclosed is a negative electrode active material offering a long life non-aqueous electrolyte secondary battery with high energy density that shows excellent cycle life characteristics. The negative electrode active material comprises a compound represented by the formula DSnO3 wherein D represents at least one selected from the group consisting of alkaline earth metals.Type: GrantFiled: May 30, 2000Date of Patent: July 23, 2002Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Toshitada Sato, Yasuhiko Bito, Toshihide Murata, Shuji Ito, Hiromu Matsuda, Yoshinori Toyoguchi
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Patent number: 6309779Abstract: A hydrogen storage alloy electrode having a high capacity and excellent cycle characteristics is provided. The electrode is made from particulate active material comprising a hydrogen storage alloy of body-centered cubic crystal structure or body-centered tetragonal crystal structure, said hydrogen storage alloy being represented by the general formula TiaM1bCrcM2dLe, wherein M1 is at least one element selected from the group consisting of Nb and Mo; M2 is at least one element selected from the group consisting of Mn, Fe, Co, Cu, V, Zn, Zr, Ag, Hf, Ta, W, Al, Si, C, N, P and B; L is at least one element selected from the group consisting of rare-earth elements and Y; 0.2≦a≦0.7; 0.01≦b≦0.4; 0.1≦c≦0.7; 0≦d≦0.3; 0≦e≦0.03; and a+b+c+d+e=1.0, and said particulate active material having a Ti—Ni system alloy phase in the surface portion thereof.Type: GrantFiled: February 11, 2000Date of Patent: October 30, 2001Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yoichiro Tsuji, Osamu Yamamoto, Yoshinori Toyoguchi, Hiromu Matsuda
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Patent number: 6287726Abstract: Disclosed is a nickel positive electrode for alkaline storage batteries with superb utilization of nickel hydroxide in an atmosphere from room temperature to high temperature. The positive electrode comprises a nickel hydroxide particle or a nickel hydroxide particle with one or more elements other than Ni incorporated therein, a coating layer which comprises a compound of cobalt having a mean valence over 2 and which coats the nickel hydroxide particle, and a compound of at least one element selected from the group consisting of Ca, Sr, Ba, Cu, Ag, Cd, Y, Yb, Ce, Sm, Gd and Er.Type: GrantFiled: December 30, 1997Date of Patent: September 11, 2001Assignee: Matsushita Electric Industrial Co., L.t.d.Inventors: Kazuhiro Ohta, Yukihiro Okada, Hiromu Matsuda, Yoshinori Toyoguchi
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Publication number: 20010018148Abstract: Disclosed is a nickel positive electrode for alkaline storage batteries with superb utilization of nickel hydroxide in an atmosphere from room temperature to high temperature. The positive electrode comprises a nickel hydroxide particle or a nickel hydroxide particle with one or more elements other than Ni incorporated therein, a coating layer which comprises a compound of cobalt having a mean valence over 2 and which coats the nickel hydroxide particle, and a compound of at least one element selected from the group consisting of Ca, Sr, Ba, Cu, Ag, Cd, Y, Yb, Ce, Sm, Gd and Er.Type: ApplicationFiled: March 6, 2001Publication date: August 30, 2001Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Kazuhiro Ohta, Yukihiro Okada, Hiromu Matsuda, Yoshinori Toyoguchi
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Patent number: 6270923Abstract: The disclosure is a non-aqueous electrolyte secondary battery of high energy density and long life exhibiting an excellent charge and discharge cycle life. The battery comprises a rechargeable positive electrode, a rechargeable negative electrode, and a non-aqueous electrolyte, the negative electrode including a compound represented by the formula Li&kgr;MX&agr;, where X represents at least one selected from the group consisting of fluorine, chlorine, bromine and iodine and M represents at least one selected from the group consisting of Sn, Si, Ge, Pb, Bi, P, B, Ga, In, Al, As, Sb, Zn, Ir, Mg, Ca, Sr, and Ba and where 0≦&kgr;<10 and 2<&agr;<12.Type: GrantFiled: March 31, 1999Date of Patent: August 7, 2001Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yasuhiko Bito, Toshitada Sato, Hiromu Matsuda, Yoshinori Toyoguchi
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Patent number: 6265111Abstract: A non-aqueous electrolyte secondary battery having an improved negative electrode is disclosed. The negative electrode comprises alloy particles having a composition represented by the formula: LixM1aM2 (1) wherein M1 represents at least one element selected from the element group m1 consisting of Ti, Zr, V, Sr, Ba, Y, La, Cr, Mo, W, Mn, Co, Ir, Ni, Cu and Fe, M2 represents at least one element selected from the element group m2 consisting of Mg, Ca, Al, In, Si, Sn, Pb, Sb and Bi, M1 and M2 represent different elements each other, and wherein 0≦x≦10, 0.1≦a≦10, with the proviso that 2≦a≦10 when M1 is composed only of Fe, and having at least two phases which are different in composition each other.Type: GrantFiled: June 21, 2000Date of Patent: July 24, 2001Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yasuhiko Bito, Toshitada Sato, Hiromu Matsuda, Yoshinori Toyoguchi, Yasushi Nakagiri, Hideharu Takezawa