Patents by Inventor Teruhito Nagae
Teruhito Nagae 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: 8802292Abstract: A hydrogen-absorbing alloy for an alkaline storage battery with high power characteristics and excellent output power stability and a method for manufacturing the same are provided. The hydrogen-absorbing alloy for an alkaline storage battery of the invention is represented by ABn (A: LaxReyMg1-x-y, B: Nin-zTz, Re: at least one element selected from rare earth elements including Y (other than La), T: at least one element selected from Co, Mn, Zn, and Al, and z>0) and has a stoichiometric ratio n of 3.5 to 3.8, a ratio of La to Re (x/y) of 3.5 or less, at least an A5B19 type structure, and an average C axis length ? of crystal lattice of 30 to 41 ?.Type: GrantFiled: June 16, 2010Date of Patent: August 12, 2014Assignee: SANYO Electric Co., Ltd.Inventors: Shuhei Yoshida, Kazuaki Tamura, Yoshinobu Katayama, Teruhito Nagae
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Publication number: 20130122352Abstract: Disclosed is a sintered nickel positive electrode that has an expanded usable range to a low charging region by using nickel hydroxide having a particular crystal structure as a main component of a positive electrode active material. In the sintered nickel positive electrode of the invention, a nickel sintered substrate is filled, through a plurality of impregnation steps, with a positive electrode active material containing nickel hydroxide (?-Ni(OH)2) as a main component. In addition, the nickel hydroxide (?-Ni(OH)2) has an integrated intensity ratio of a peak intensity in a (001) face of 1.8 or more with respect to a peak intensity in a (100) face, where the peak intensities are determined by X-ray diffraction analysis, while an integrated intensity ratio of a peak intensity in a (001) face with respect to a peak intensity in a (100) face is about 1.5 in the related art. Using the nickel hydroxide having an integrated intensity ratio of the peak intensity in the (001) face of 1.Type: ApplicationFiled: July 26, 2011Publication date: May 16, 2013Applicant: SANYO ELECTRIC CO., LTD.Inventors: Yasuyuki Harada, Yasuhiro Kudo, Kenji Fujita, Toshihiro Sakatani, Makoto Mori, Teruhito Nagae
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Patent number: 8409753Abstract: An alkaline storage battery in which an actual reaction area is not reduced after increasing a reaction area is provided. A hydrogen storage alloy negative electrode 11 of an alkaline storage battery 10 of the present invention is formed in a strip form including a long axis and a short axis, in which the ratio (A/B) of a length A (cm) of the long axis to a length B (cm) of the short axis is 20 or more and 30 or less (20?A/B?30), and the ratio (X/Y) of an electrolyte volume X (g) retained in the hydrogen storage alloy negative electrode 11 to an electrolyte volume Y (g) retained in a separator 13 is 0.8 or more and 1.1 or less (0.8?X/Y?1.1). With this arrangement, an alkaline storage battery with high output characteristics and long-term durability performance is obtained.Type: GrantFiled: January 27, 2009Date of Patent: April 2, 2013Assignee: SANYO Electric Co., Ltd.Inventors: Shuhei Yoshida, Yoshinobu Katayama, Kazuaki Tamura, Teruhito Nagae
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Patent number: 8124281Abstract: A hydrogen storage alloy used in a hydrogen storage alloy electrode 11 has a crystalline structure having a mixed phase made up of at least an A2B7 type structure and an A5B19 type structure, and a surface layer of hydrogen storage alloy particles is so formed as to have a nickel content ratio greater than that of a bulk. The ratio (X/Y) of the nickel content ratio X (% by mass) of the surface layer to the nickel content ratio Y (% by mass) of the bulk is greater than 1.0 but no more than 1.2 (1.0<X/Y?1.2). The gradient between the content ratio of the nickel in the surface layer of the hydrogen storage alloy particles and the content ratio of the nickel in the bulk is alleviated and a hydrogen storage alloy electrode with high output characteristics is obtained.Type: GrantFiled: August 27, 2008Date of Patent: February 28, 2012Assignee: SANYO Electric Co., Ltd.Inventors: Shuhei Yoshida, Kazuaki Tamura, Yoshinobu Katayama, Teruhito Nagae, Masao Takee
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Publication number: 20100323243Abstract: A hydrogen-absorbing alloy for an alkaline storage battery with high power characteristics and excellent output power stability and a method for manufacturing the same are provided. The hydrogen-absorbing alloy for an alkaline storage battery of the invention is represented by ABn (A: LaxReyMg1-x-y, B: Nin-zTz, Re: at least one element selected from rare earth elements including Y (other than La), T: at least one element selected from Co, Mn, Zn, and Al, and z>0) and has a stoichiometric ratio n of 3.5 to 3.8, a ratio of La to Re (x/y) of 3.5 or less, at least an A5B19 type structure, and an average C axis length ? of crystal lattice of 30 to 41 ?.Type: ApplicationFiled: June 16, 2010Publication date: December 23, 2010Applicant: SANYO ELECTRIC CO., LTD.Inventors: Shuhei Yoshida, Kazuaki Tamura, Yoshinobu Katayama, Teruhito Nagae
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Patent number: 7829220Abstract: To provide a hydrogen storage alloy for an alkaline battery capable of having high performance of power characteristics much more beyond the related-art range, and a production method thereof, as well as an alkaline battery by investigating the constituent ratios of the A2B7-type structure and the A5B19-type structure. The hydrogen storage alloy for an alkaline battery of the present invention includes: an element R selected from the Group IV and the rare earth elements including Y and excluding La; and an element M consisting of at least one of Co, Mn, and Zn. The hydrogen storage alloy is represented by general formula: La?R1????Mg?Ni?????Al?M? (wherein ?, ?, ?, ?, ? satisfy numerical formulae: 0???0.5, 0.1???0.2, 3.7???3.9, 0.1???0.3, 0???0.2); and the constituent ratio of the A5B19-type structure is 40% or more in the crystal structure thereof.Type: GrantFiled: May 29, 2008Date of Patent: November 9, 2010Assignee: Sanyo Electric Co., Ltd.Inventors: Shuhei Yoshida, Kazuaki Tamura, Yoshinobu Katayama, Teruhito Nagae, Masao Takee
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Publication number: 20090191449Abstract: An alkaline storage battery in which an actual reaction area is not reduced after increasing a reaction area is provided. A hydrogen storage alloy negative electrode 11 of an alkaline storage battery 10 of the present invention is formed in a strip form including a long axis and a short axis, in which the ratio (A/B) of a length A (cm) of the long axis to a length B (cm) of the short axis is 20 or more and 30 or less (20?A/B?30), and the ratio (X/Y) of an electrolyte volume X (g) retained in the hydrogen storage alloy negative electrode 11 to an electrolyte volume Y (g) retained in a separator 13 is 0.8 or more and 1.1 or less (0.8?X/Y?1.1). With this arrangement, an alkaline storage battery with high output characteristics and long-term durability performance is obtained.Type: ApplicationFiled: January 27, 2009Publication date: July 30, 2009Applicant: SANYO ELECTRIC CO., LTD.Inventors: Shuhei YOSHIDA, Yoshinobu KATAYAMA, Kazuaki TAMURA, Teruhito NAGAE
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Publication number: 20090169995Abstract: A hydrogen storage alloy of the present invention includes component A including a rare earth element represented by Ln and magnesium and component B including elements containing at least nickel and aluminum, wherein a primary alloy phase of a hydrogen storage alloy represents an A5B19 type structure; a general formula is represented as Ln1-xMgxNiy-a-bAlaMb (wherein M represents at least one element selected from Co, Mn, and Zn; and 0.1?x?0.2, 3.6?y?3.9, 0.1?a?0.2, and 0?b?0.1); a rare earth element Ln includes maximally two elements containing at least La; and absorption hydrogen equilibrium pressure (Pa) is 0.03-0.17 MPa when the hydrogen amount absorbed in the hydrogen storage alloy (H/M (atomic ratio)) at 40° C. is 0.5.Type: ApplicationFiled: December 22, 2008Publication date: July 2, 2009Applicant: SANYO ELECTRIC CO., LTD.Inventors: Shuhei YOSHIDA, Kazuaki TAMURA, Yoshinobu KATAYAMA, Teruhito NAGAE
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Publication number: 20090061316Abstract: A hydrogen storage alloy used in a hydrogen storage alloy electrode 11 has a crystalline structure having a mixed phase made up of at least an A2B7 type structure and an A5B19 type structure, and a surface layer of hydrogen storage alloy particles is so formed as to have a nickel content ratio greater than that of a bulk. The ratio (X/Y) of the nickel content ratio X (% by mass) of the surface layer to the nickel content ratio Y (% by mass) of the bulk is greater than 1.0 but no more than 1.2 (1.0<X/Y?1.2). The gradient between the content ratio of the nickel in the surface layer of the hydrogen storage alloy particles and the content ratio of the nickel in the bulk is alleviated and a hydrogen storage alloy electrode with high output characteristics is obtained.Type: ApplicationFiled: August 27, 2008Publication date: March 5, 2009Applicant: SANYO ELECTRIC CO., LTD.Inventors: Shuhei YOSHIDA, Kazuaki TAMURA, Yoshinobu KATAYAMA, Teruhito NAGAE, Masao TAKEE
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Publication number: 20080299458Abstract: To provide a hydrogen storage alloy for an alkaline battery capable of having high performance of power characteristics much more beyond the related-art range, and a production method thereof, as well as an alkaline battery by investigating the constituent ratios of the A2B7-type structure and the A5B19-type structure. The hydrogen storage alloy for an alkaline battery of the present invention includes: an element R selected from the Group IV and the rare earth elements including Y and excluding La; and an element M consisting of at least one of Co, Mn, and Zn. The hydrogen storage alloy is represented by general formula: La?R1-?-?Mg?Ni?-?-?Al?M? (wherein ?, ?, ?, ?, ? satisfy numerical formulae: 0???0.5, 0.1???0.2, 3.7???3.9, 0.1???0.3, 0???0.2); and the constituent ratio of the A5B19-type structure is 40% or more in the crystal structure thereof.Type: ApplicationFiled: May 29, 2008Publication date: December 4, 2008Applicant: SANYO ELECTRIC CO., LTD.Inventors: Shuhei YOSHIDA, Kazuaki TAMURA, Yoshinobu KATAYAMA, Teruhito NAGAE, Masao TAKEE
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Patent number: 6468687Abstract: An alkaline storage battery has a group of spiral electrodes composed of positive and negative electrode plates spirally wound with first and second separators respectively located at the outside of the positive electrode plate and at the inside of the positive electrode plate. The weight per unit area of the first separator is greater than that of the second separator.Type: GrantFiled: March 20, 2000Date of Patent: October 22, 2002Assignee: Sanyo Electric Co., Ltd.Inventors: Teruhito Nagae, Kenji Arisawa, Etsuya Fujisaka, Masao Takee, Takeo Hamamatsu, Taishi Maeda, Satoru Kometani
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Publication number: 20020045097Abstract: After coating a hydrogen absorbing alloy slurry obtained by kneading a hydrogen absorbing alloy powder 12a, a polyethylene oxide (PEO) powder as a binder 12b, and a suitable amount of water (a solvent for binder) to both surfaces of a metal core plate (active material holder) made of a punching metal, the core plate is dried. Then, after removing the active material layer 13 from the core plate 11 by a means such as cutting and the like, a definite amount of water (a solvent for binder) is sprayed to the cut surface (the exposed surface of the core plate 11) to attach the water to the cur surface followed by drying to provide a hydrogen absorbing alloy electrode 10, which is disposed at the outermost side of the electrode group.Type: ApplicationFiled: August 17, 2001Publication date: April 18, 2002Inventors: Yasuhiko Ikeda, Makoto Ochi, Motoo Tadokoro, Teruhiko Imoto, Tetsuyuki Murata, Takashi Yamaguchi, Yasumasa Kondou, Kiyoshi Morita, Kousuke Satoguchi, Masao Takee, Teruhito Nagae, Satoshi Wada