Patents by Inventor Masuhiro Onishi
Masuhiro Onishi 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: 11569489Abstract: Provided is a technique relating to a slurry for a non-aqueous secondary battery that can stably be applied onto a battery member surface even in a situation in which an inkjet method is adopted. A method of producing the slurry for a non-aqueous secondary battery includes a degassing step of reducing the dissolved carbon dioxide gas concentration of a mixture containing a particulate polymer (A) and water.Type: GrantFiled: July 23, 2019Date of Patent: January 31, 2023Assignee: ZEON CORPORATIONInventors: Masuhiro Onishi, Masanobu Sato, Hiroshi Koga
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Publication number: 20230006262Abstract: A secondary battery includes a laminate in which a positive electrode, a separator, and a negative electrode are stacked in stated order. Resistance A per unit area of a central region P that has a similar shape to a shape of a surface Z that is either or both of an affixing surface X of the positive electrode and the separator and an affixing surface Y of the negative electrode and the separator, that has a center at the same position as a center of the surface Z, and that has an area equivalent to 10% of area of the surface Z is larger than resistance B per unit area of a region Q other than the central region P at the surface Z.Type: ApplicationFiled: December 15, 2020Publication date: January 5, 2023Applicant: ZEON CORPORATIONInventors: Yutaka MARUHASHI, Masuhiro ONISHI
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Publication number: 20210344048Abstract: Provided is a laminate for a secondary battery in which separator curling up is inhibited. A method of producing a laminate for a secondary battery includes: a step (A) of producing an affixed body including a negative electrode material and separator webs affixed to both surfaces of the negative electrode material or an affixed body including a negative electrode material, a first separator web, a positive electrode, and a second separator web affixed in stated order; and a step (B) of cutting the affixed body. The step (A) includes a step (a1) of applying an adhesive material at affixing surfaces of the negative electrode material and the separator webs. The adhesive material is applied in the step (a1) such that a first coated section including a region where the adhesive material is applied with a coating weight M1 and a second coated section including a region where the adhesive material is applied with a coating weight M2 (?M1+0.02 g/m2) are located alternately in a longitudinal direction.Type: ApplicationFiled: September 12, 2019Publication date: November 4, 2021Applicant: ZEON CORPORATIONInventors: Masanobu SATO, Hiroshi KOGA, Masuhiro ONISHI, Koji ANNAKA
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Publication number: 20210218009Abstract: Provided is a technique relating to a slurry for a non-aqueous secondary battery that can stably be applied onto a battery member surface even in a situation in which an inkjet method is adopted. A method of producing the slurry for a non-aqueous secondary battery includes a degassing step of reducing the dissolved carbon dioxide gas concentration of a mixture containing a particulate polymer (A) and water.Type: ApplicationFiled: July 23, 2019Publication date: July 15, 2021Applicant: ZEON CORPORATIONInventors: Masuhiro ONISHI, Masanobu SATO, Hiroshi KOGA
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Patent number: 9065124Abstract: A battery pack with a reduced resistance connection arrangement in which battery cells are arranged in rows in an insulating case and an electrode of each battery cell is coupled to an electrode of another battery cell through a connecting metallic plate. The connecting metallic plate is made of copper and is disposed on a positive electrode of one battery cell and a negative electrode of another battery cell to form a lap joint. Welds are formed in predetermined positions on the connecting metallic plate above the positive and negative electrodes by arc spot welding. The electrodes are formed of nickel-coated steel. The depth h of weld penetration in the weld is greater than the thickness T1 of the connecting metallic plate and smaller than the thickness T1 plus the thickness T2 of one of the electrodes, that is, T1<h?(T1+T2×4/5).Type: GrantFiled: November 9, 2007Date of Patent: June 23, 2015Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Shoji Imanaga, Kinya Aota, Yoshihisa Tsurumi, Masuhiro Onishi
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Patent number: 8440339Abstract: A battery module is configured so that the first cell string and the second cell string are arranged between the first plate member and the second plate member and the second cell string is arranged closer to the second plate member side than the first cell string is and is arranged closer to the outlet side than the first cell string is. At the inlet side of the housing, the inlet is arranged closer to the first plate member than to the second cell string, at least a part between the inlet side of the second cell string and the second plate member is covered by the inlet-side guide plate, and the cooling air is introduced into the housing through the inlet so as to form a flow of the cooling air along the first plate member and a flow of the cooling air along the inlet-side guide plate.Type: GrantFiled: April 2, 2009Date of Patent: May 14, 2013Assignees: Hitachi, Ltd., Hitachi Vehicle Energy, Ltd.Inventors: Susumu Harada, Masuhiro Onishi, Seiichi Sato, Yoshihisa Tsurumi
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Publication number: 20090258282Abstract: A battery module is configured so that the first cell string and the second cell string are arranged between the first plate member and the second plate member and the second cell string is arranged closer to the second plate member side than the first cell string is and is arranged closer to the outlet side than the first cell string is. At the inlet side of the housing, the inlet is arranged closer to the first plate member than to the second cell string, at least a part between the inlet side of the second cell string and the second plate member is covered by the inlet-side guide plate, and the cooling air is introduced into the housing through the inlet so as to form a flow of the cooling air along the first plate member and a flow of the cooling air along the inlet-side guide plate.Type: ApplicationFiled: April 2, 2009Publication date: October 15, 2009Applicants: Hitachi, Ltd., Hitachi Vehicle Energy, Ltd.Inventors: Susumu HARADA, Masuhiro ONISHI, Seiichi SATO, Yoshihisa TSURUMI
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Publication number: 20080131765Abstract: In a battery pack in which multiple battery cells are arranged in one or multiple rows in an electrically insulating case and an electrode of each battery cell is coupled to an electrode of another battery cell through a connecting metallic plate, the connecting metallic plate made of copper is disposed on a positive electrode of each battery cell and on a negative electrode of another battery cell to form a lap joint, and a weld is formed in each of one predetermined position on the connecting metallic plate 3 above the positive electrode and another predetermined position on the connecting metallic plate above the negative electrode by applying arc spot welding. The depth h of weld penetration in the weld is greater than the thickness T1 of the connecting metallic plate and smaller than the thickness T1 plus the thickness T2 of the positive electrode or the negative electrode, that is, T1<h?(T1+T2×4/5).Type: ApplicationFiled: November 9, 2007Publication date: June 5, 2008Inventors: Shoji Imanaga, Kinya Aota, Yoshihisa Tsurumi, Masuhiro Onishi
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Publication number: 20060073387Abstract: A lithium secondary battery includes a positive electrode, a negative electrode and nonaqueous electrolyte, wherein the negative electrode includes a negative active material and a binder, the negative active material comprises graphite A and graphite B, shapes of primary particles of the graphite A are spherical or elliptical, an average particle diameter of the primary particles of the graphite A ranges between 10 ?m and 30 ?m inclusive, sizes of crystallites of the graphite A in a direction of a c-axis are smaller than 100 nm and tap density of the graphite A is 1.0 g/cm3 or higher, shapes of primary particles of the graphite B are flat, an average particle diameter of the primary particles of the graphite B ranges between 1 ?m and 10 ?m inclusive, and sizes of crystallites of the graphite B in a direction of a c-axis are 100 nm or larger, which has a large capacity and excellent cycle characteristics.Type: ApplicationFiled: January 21, 2004Publication date: April 6, 2006Applicant: Hitachi Maxell, Ltd.Inventors: Haruo Sakagoshi, Masuhiro Onishi, Hyo Azuma, Seiji Ishizawa, Fumio Togawa, Shuichi Wada
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Patent number: 6593031Abstract: A nickel metal-hydride cell having a paste type nickel positive electrode containing nickel hydroxide and a cobalt conducting aid selected from the group consisting of metal cobalt and cobalt compounds, a negative electrode which comprises a hydrogen absorbing alloy having a composition of the formula: MmNi5−x+yMx in which Mm is a rare earth element, M is a metal element, 0<x<2, and −0.2<y<0.6, a separator interposed between two electrodes, and an alkaline electrolytic solution, where a ratio of C—H to C—Co(II) is 1.3 or less, wherein C—H is a quantity of electricity of a discharge reserve formed in the negative electrode, and C—Co(II) is a quantity of electricity necessary for reducing cobalt oxide in the positive electrode to cobalt(II) oxide.Type: GrantFiled: August 11, 2000Date of Patent: July 15, 2003Assignee: Hitachi Maxell, Ltd.Inventors: Masuhiro Onishi, Hiroshi Fukunaga, Masato Isogai, Ryo Nagai
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Patent number: 5366831Abstract: In a paste-type nickel electrode using nickel hydroxide powder controlled to under 0.1 ml/g incl. as an active material so as to be increased in its density, a nickel electrode for alkaline battery in which II-group elements and cobalt are included in the nickel hydroxide powder in solid solution state, so that swelling of electrode can be prevented and charge efficiency at a high temperature can be improved.Type: GrantFiled: February 9, 1993Date of Patent: November 22, 1994Assignee: Yuasa CorporationInventors: Masaharu Watada, Masahiko Oshitani, Masuhiro Onishi