Patents by Inventor Shuichiro Irie
Shuichiro Irie 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: 11441218Abstract: An object of the present invention is to provide a Mn-based alloy exhibiting metamagnetism over a wide temperature range. A Mn-based alloy according to the present invention is a MnAl alloy having metamagnetism. The metamagnetism refers to a property in which magnetism undergoes transition from paramagnetism or antiferromagnetism to ferromagnetism by a magnetic field. In the MnAl alloy, an antiferromagnetic state is adequately stable, so that by imparting AFM-FM transition type metamagnetism (the type of metamagnetism undergoing transition from antiferromagnetism to ferromagnetism), it is possible to obtain metamagnetism over a wide temperature range, particularly, over a temperature range of ?100° C. to 200° C.Type: GrantFiled: December 27, 2017Date of Patent: September 13, 2022Assignee: TDK CORPORATIONInventors: Suguru Satoh, Shuichiro Irie, Yasunao Miura
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Publication number: 20190338401Abstract: An object of the present invention is to reduce a variation in the component of a MnAl alloy deposited by a molten salt electrolysis method to thereby obtain high magnetic characteristics. In a MnAl alloy manufacturing method that electrolyzes molten salt containing a Mn compound and an Al compound to deposit a MnAl alloy, the MnAl alloy is additionally charged into the molten salt during electrolysis. According to the present invention, the concentration of the Mn compound is maintained by additional charging of the Mn compound, so that it is possible to reduce a variation in the composition of the MnAl alloy to be deposited to thereby maintain stable production conditions.Type: ApplicationFiled: December 27, 2017Publication date: November 7, 2019Applicant: TDK CORPORATIONInventors: Shuichiro IRIE, Suguru SATOH, Yasunao MIURA
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Publication number: 20190338406Abstract: An object of the present invention is to provide a Mn-based alloy exhibiting metamagnetism over a wide temperature range. A Mn-based alloy according to the present invention is a MnAl alloy having metamagnetism. The metamagnetism refers to a property in which magnetism undergoes transition from paramagnetism or antiferromagnetism to ferromagnetism by a magnetic field. In the MnAl alloy, an antiferromagnetic state is adequately stable, so that by imparting AFM-FM transition type metamagnetism (the type of metamagnetism undergoing transition from antiferromagnetism to ferromagnetism), it is possible to obtain metamagnetism over a wide temperature range, particularly, over a temperature range of ?100° C. to 200° C.Type: ApplicationFiled: December 27, 2017Publication date: November 7, 2019Applicant: TDK CORPORATIONInventors: Suguru SATOH, Shuichiro IRIE, Yasunao MIURA
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Patent number: 8540929Abstract: The present invention relates to a method for producing a rare earth sintered magnet including the steps of: molding a mixture of magnetic powder containing a rare earth compound and oil-extended rubber containing oil and rubber to produce a molded body; removing the oil-extended rubber from the molded body; and calcining the molded body from which the oil-extended rubber is removed to produce a rare earth sintered magnet 10.Type: GrantFiled: November 22, 2010Date of Patent: September 24, 2013Assignee: TDK CorporationInventors: Shuichiro Irie, Raitaro Masaoka, Toshiya Hozumi, Tetsuya Chiba
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Publication number: 20110121498Abstract: The present invention relates to a method for producing a rare earth sintered magnet including the steps of: molding a mixture of magnetic powder containing a rare earth compound and oil-extended rubber containing oil and rubber to produce a molded body; removing the oil-extended rubber from the molded body; and calcining the molded body from which the oil-extended rubber is removed to produce a rare earth sintered magnet 10.Type: ApplicationFiled: November 22, 2010Publication date: May 26, 2011Applicant: TDK CorporationInventors: Shuichiro IRIE, Raitaro Masaoka, Toshiya Hozumi, Tetsuya Chiba
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Patent number: 7851087Abstract: A high-capacity enclosed nickel-zinc primary battery excellent in characteristics such as capacity maintenance factor, energy density, and high-efficient discharge characteristics, an anode using it, and a production method for them. An enclosed nickel-zinc primary battery which uses as an anode an anode active material of nickel hydroxide compound, such as nickel oxyhydroxide, particles and uses zinc alloy gel as a cathode material, wherein a ratio of anode theoretical capacity to cathode theoretical capacity is 1.0-1.6, and a ratio of alkali electrolyte to anode theoretical capacity is 1.0-1.6 ml/Ah.Type: GrantFiled: May 5, 2009Date of Patent: December 14, 2010Assignee: Toshiba Battery Co., Ltd.Inventors: Kunihiko Miyamoto, Shuichiro Irie, Shinichi Miyamoto, Naomi Hadano, Teiji Okayama
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Patent number: 7763383Abstract: The object of the invention is to provide an alkali primary battery being excellent in high rate discharge characteristics with less increase of the inner pressure by generating hydrogen in the overdischarge process. The invention provides a sealed nickel zinc primary battery comprising at least a positive electrode having a higher oxide of nickel as a positive electrode active substance, a negative electrode having zinc or an alloy thereof as a negative electrode active substance, a separator and an electrolyte solution housed in a vessel, wherein manganese dioxide is added in a proportion of 3 to 7% by mass relative to the higher oxide of nickel in the positive electrode, and the ratio between the theoretical capacity of the negative electrode to the theoretical capacity of the positive electrode (the theoretical capacity of the negative electrode/theoretical capacity of the positive electrode) is in the range of 1.2 to 1.0.Type: GrantFiled: May 28, 2003Date of Patent: July 27, 2010Assignee: Toshiba Battery Co., Ltd.Inventors: Kunihiko Miyamoto, Shuichiro Irie, Eiki Kashiwazaki, Teiji Okayama
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Publication number: 20090274959Abstract: A high-capacity enclosed nickel-zinc primary battery excellent in characteristics such as capacity maintenance factor, energy density, and high-efficient discharge characteristics, an anode using it, and a production method for them. An enclosed nickel-zinc primary battery which uses as an anode an anode active material of nickel hydroxide compound, such as nickel oxyhydroxide, particles and uses zinc alloy gel as a cathode material, wherein a ratio of anode theoretical capacity to cathode theoretical capacity is 1.0-1.6, and a ratio of alkali electrolyte to anode theoretical capacity is 1.0-1.6 ml/Ah.Type: ApplicationFiled: May 5, 2009Publication date: November 5, 2009Applicant: TOSHIBA BATTERY CO., LTD.Inventors: Kunihiko Miyamoto, Shuichiro Irie, Shinichi Miyamoto, Naomi Hadano, Teiji Okayama
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Patent number: 7594938Abstract: A high-capacity enclosed nickel-zinc primary battery excellent in characteristics such as capacity maintenance factor, energy density, and high-efficient discharge characteristics, an anode using it, and a production method for them. An enclosed nickel-zinc primary battery which uses as an anode an anode active material of nickel hydroxide compound, such as nickel oxyhydroxide, particles and uses zinc alloy gel as a cathode material, wherein a ratio of anode theoretical capacity to cathode theoretical capacity is 1.0-1.6, and a ratio of alkali electrolyte to anode theoretical capacity is 1.0-1.6 ml/Ah.Type: GrantFiled: May 25, 2007Date of Patent: September 29, 2009Assignee: Toshiba Battery Co., Ltd.Inventors: Kunihiko Miyamoto, Shuichiro Irie, Shinichi Miyamoto, Naomi Hadano, Teiji Okayama
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Publication number: 20080096106Abstract: A high-capacity enclosed nickel-zinc primary battery excellent in characteristics such as capacity maintenance factor, energy density, and high-efficient discharge characteristics, an anode using it, and a production method for them. An enclosed nickel-zinc primary battery which uses as an anode an anode active material of nickel hydroxide compound, such as nickel oxyhydroxide, particles and uses zinc alloy gel as a cathode material, wherein a ratio of anode theoretical capacity to cathode theoretical capacity is 1.0-1.6, and a ratio of alkali electrolyte to anode theoretical capacity is 1.0-1.6 ml/Ah.Type: ApplicationFiled: May 25, 2007Publication date: April 24, 2008Applicant: TOSHIBA BATTERY CO., LTD.Inventors: Kunihiko Miyamoto, Shuichiro Irie, Shinichi Miyamoto, Naomi Hadano, Teiji Okayama
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Publication number: 20070298323Abstract: A high-capacity enclosed nickel-zinc primary battery excellent in characteristics such as capacity maintenance factor, energy density, and high-efficient discharge characteristics, an anode using it, and a production method for them. An enclosed nickel-zinc primary battery which uses as an anode an anode active material of nickel hydroxide compound, such as nickel oxyhydroxide, particles and uses zinc alloy gel as a cathode material, wherein a ratio of anode theoretical capacity to cathode theoretical capacity is 1.0-1.6, and a ratio of alkali electrolyte to anode theoretical capacity is 1.0-1.6 ml/Ah.Type: ApplicationFiled: May 25, 2007Publication date: December 27, 2007Applicant: TOSHIBA BATTERY CO., LTD.Inventors: Kunihiko Miyamoto, Shuichiro Irie, Shinichi Miyamoto, Naomi Hadano, Teiji Okayama
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Publication number: 20070243320Abstract: A high-capacity enclosed nickel-zinc primary battery excellent in characteristics such as capacity maintenance factor, energy density, and high-efficient discharge characteristics, an anode using it, and a production method for them. An enclosed nickel-zinc primary battery which uses as an anode an anode active material of nickel hydroxide compound, such as nickel oxyhydroxide, particles and uses zinc alloy gel as a cathode material, wherein a ratio of anode theoretical capacity to cathode theoretical capacity is 1.0-1.6, and a ratio of alkali electrolyte to anode theoretical capacity is 1.0-1.6 ml/Ah.Type: ApplicationFiled: May 25, 2007Publication date: October 18, 2007Applicant: TOSHIBA BATTERY CO., LTD.Inventors: Kunihiko MIYAMOTO, Shuichiro Irie, Shinichi Miyamoto, Naomi Hadano, Teiji Okayama
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Patent number: 7238447Abstract: A high-capacity enclosed nickel-zinc primary battery excellent in characteristics such as capacity maintenance factor, energy density, and high-efficient discharge characteristics, an anode using it, and a production method for them. An enclosed nickel-zinc primary battery which uses as an anode an anode active material of nickel hydroxide compound, such as nickel oxyhydroxide, particles and uses zinc alloy gel as a cathode material, wherein a ratio of anode theoretical capacity to cathode theoretical capacity is 1.0-1.6, and a ratio of alkali electrolyte to anode theoretical capacity is 1.0-1.6 ml/Ah.Type: GrantFiled: November 16, 2001Date of Patent: July 3, 2007Assignee: Toshiba Battery Co., Ltd.Inventors: Kunihiko Miyamoto, Shuichiro Irie, Shinichi Miyamoto, Naomi Hadano, Teiji Okayama
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Publication number: 20050244712Abstract: The object of the invention is to provide an alkali primary battery being excellent in high rate discharge characteristics with less increase of the inner pressure by generating hydrogen in the overdischarge process. The invention provides a sealed nickel zinc primary battery comprising at least a positive electrode having a higher oxide of nickel as a positive electrode active substance, a negative electrode having zinc or an alloy thereof as a negative electrode active substance, a separator and an electrolyte solution housed in a vessel, wherein manganese dioxide is added in a proportion of 3 to 7% by mass relative to the higher oxide of nickel in the positive electrode, and the ratio between the theoretical capacity of the negative electrode to the theoretical capacity of the positive electrode (the theoretical capacity of the negative electrode/theoretical capacity of the positive electrode) is in the range of 1.2 to 1.0.Type: ApplicationFiled: May 28, 2003Publication date: November 3, 2005Applicant: Toshiba Battery Co., Ltd.Inventors: Kunihiko Miyamoto, Shuichiro Irie, Eiki Kashiwazaki, Teiji Okayama
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Publication number: 20040072070Abstract: A high-capacity enclosed nickel-zinc primary battery excellent in characteristics such as capacity maintenance factor, energy density, and high-efficient discharge characteristics, an anode using it, and a production method for them. An enclosed nickel-zinc primary battery which uses as an anode an anode active material of nickel hydroxide compound, such as nickel oxyhydroxide, particles and uses zinc alloy gel as a cathode material, wherein a ratio of anode theoretical capacity to cathode theoretical capacity is 1.0-1.6, and a ratio of alkali electrolyte to anode theoretical capacity is 1.0-1.6 ml/Ah.Type: ApplicationFiled: October 14, 2003Publication date: April 15, 2004Inventors: Kunihiko Miyamoto, Shuichiro Irie, Shinichi Miyamoto, Naomi Hadano, Teiji Okayama
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Patent number: 6338916Abstract: Provided is a hydrogen absorbing alloy superior to the MmNi5 system hydrogen absorbing alloy and the TiFe system hydrogen absorbing alloy that are widely put to practical use in both the capacity density per unit volume and the capacity density per unit weight. The hydrogen absorbing alloy of the present invention is also superior to the conventional TiMn2 system hydrogen absorbing alloy in the initial activation. The hydrogen absorbing alloy of the present invention is represented by a general formula AMx, where A is at least one element selected from IA group, IIA group, IIIB group, and IVB group of the periodic table, and M is at least one element selected from VB group, VIB group, VIIB group, VIIIB group, IB group, IIB group, IIIA group, IVA group and VA group of the periodic table, x meets the relationship of 2.7<x<3.8, and an average atomic radius r meets the relationship 1.36 Å≦r≦1.39 Å.Type: GrantFiled: February 2, 2000Date of Patent: January 15, 2002Assignee: Toshiba Battery Co., Ltd.Inventors: Shuichiro Irie, Hideharu Suzuki, Reiji Nishikawa, Kazuta Takeno