Patents by Inventor Hideo Kaiya
Hideo Kaiya 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: 6805995Abstract: The present invention provides a high-capacity sealed nickel-metal hydride storage battery superior in high-current discharge, without extending the injection time of an electrolyte. This battery includes an electrode group, a metal case for accommodating the electrode group, and a seal plate provided with a safety vent, for sealing an opening of the case, and the electrode group has a structure in which, round a non-sintered type cylindrical electrode of one polarity, a non-sintered type hollow cylindrical electrode of the other polarity and a non-sintered type hollow cylindrical electrode of the one polarity are layered alternately in the form of concentric circles with a separator between the electrodes.Type: GrantFiled: April 9, 2001Date of Patent: October 19, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Takeshi Yoshinaka, Shogo Yamamoto, Toru Inagaki, Yasushi Nakamura, Futoshi Tanigawa, Hideo Kaiya, Hiroki Takeshima
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Patent number: 6803148Abstract: In order to provide a nickel-metal hydride storage battery capable of preventing the formation of a minute chemical short circuit between the positive and negative electrodes while exhibiting an excellent self-discharge resistance, a nickel positive electrode plate is formed by filling an active material mainly composed of a hydroxide of nickel into a porous sintered nickel substrate, followed by further forming a layer of a manganese compound containing manganese with a valence of 2 or more on the surface thereof, and an alkaline storage battery is configured by using this nickel positive electrode plate.Type: GrantFiled: December 4, 2001Date of Patent: October 12, 2004Assignee: Matsushita Electric Industrial, Co., Ltd.Inventors: Soryu Nakayama, Kohji Yuasa, Hideo Kaiya
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Publication number: 20040041537Abstract: A non-aqueous electrolyte secondary battery comprising: a positive electrode plate including an outer jacket comprising a sheet-shaped positive electrode current collector and a positive electrode active material layer formed on an inner surface of the outer jacket except for a peripheral portion thereof; a negative electrode plate including an outer jacket comprising a sheet-shaped negative electrode current collector and a negative electrode active material layer formed on an inner surface of the outer jacket except for a peripheral portion thereof; a separator layer comprising a polymer electrolyte interposed between the positive electrode active material layer and the negative electrode active material layer, wherein the peripheral portion of the positive electrode current collector and the peripheral portion of the negative electrode current collector are bonded together, with an insulating material interposed therebetween.Type: ApplicationFiled: June 12, 2003Publication date: March 4, 2004Inventors: Sumihito Ishida, Keisuke Tanaka, Yoshio Moriwaki, Hideo Kaiya
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Patent number: 6596434Abstract: A cylindrical type alkaline storage battery includes a metallic case, a sealing plate for the metallic case, and a spiral-shaped group of electrodes. The group of electrodes includes a positive electrode plate, a negative electrode plate and a separator. The sealing plate includes a cap-shaped terminal plate, which includes a cap part and a flange, and a disc-shaped filter on the underside of the flange. The disc shaped filter has a gas venting hole in its center. A safety valve is included between the flange and the filter. A space between the metallic case and the rims of the flange and of the filter is sealed with a gasket.Type: GrantFiled: January 19, 2001Date of Patent: July 22, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Takeshi Yoshinaka, Norio Suzuki, Hideo Kaiya
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Publication number: 20030134190Abstract: Disclosed is a non-aqueous electrolyte battery comprising: a flat outer jacket comprising a metal sheet and having two primary flat portions facing each other; two active material layers of a first polarity respectively carried on inner surfaces of the flat portions; an electrode plate of a second polarity disposed in a position facing with each of the active material layers; and a separator layer interposed between each of the active material layers and the electrode plate of a second polarity, with the outer jacket serving as a current collector of the active material layers.Type: ApplicationFiled: October 4, 2002Publication date: July 17, 2003Inventors: Sumihito Ishida, Keisuke Tanaka, Hideo Kaiya, Shoichiro Watanabe
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Publication number: 20020184743Abstract: In order to provide a nickel-metal hydride storage battery capable of preventing the formation of a minute chemical short circuit between the positive and negative electrodes while exhibiting an excellent self-discharge resistance, a nickel positive electrode plate is formed by filling an active material mainly composed of a hydroxide of nickel into a porous sintered nickel substrate, followed by further forming a layer of a manganese compound containing manganese with a valence of 2 or more on the surface thereof, and an alkaline storage battery is configured by using this nickel positive electrode plate.Type: ApplicationFiled: December 4, 2001Publication date: December 12, 2002Inventors: Soryu Nakayama, Kohji Yuasa, Hideo Kaiya
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Publication number: 20020009631Abstract: The present invention provides a high-capacity sealed nickel-metal hydride storage battery superior in high-current discharge, without extending the injection time of an electrolyte. This battery includes an electrode group, a metal case for accommodating the electrode group, and a seal plate provided with a safety vent, for sealing an opening of the case, and the electrode group has a structure in which, round a non-sintered type cylindrical electrode of one polarity, a non-sintered type hollow cylindrical electrode of the other polarity and a non-sintered type hollow cylindrical electrode of the one polarity are layered alternately in the form of concentric circles with a separator between the electrodes.Type: ApplicationFiled: April 9, 2001Publication date: January 24, 2002Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Takeshi Yoshinaka, Shogo Yamamoto, Toru Inagaki, Yasushi Nakamura, Futoshi Tanigawa, Hideo Kaiya, Hiroki Takeshima
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Patent number: 6156455Abstract: The present invention provides an alkaline storage battery comprising a positive electrode containing a nickel hydroxide active material and a compound oxide in a range of 2 wt % to 30 wt % to the amount of the nickel hydroxide. The compound oxide contains at least one transition metal element and at least one rare earth element or alkaline earth metal element. The compound oxide has conductivity of 10.sup.-2 S/cm or higher at 25.degree. C. and stability in an alkaline electrolyte. Consequently, the alkaline storage battery shows excellent characteristics in a long-term preservation at a high temperature, capacity restoration, and charge/discharge cycle life.Type: GrantFiled: June 11, 1998Date of Patent: December 5, 2000Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yasuharu Yamamura, Masumi Katsumoto, Hideo Kaiya
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Patent number: 6103319Abstract: A battery electrode substrate which is constituted of a porous metallic body structure having communicating pores at a porosity of at least 90% and an Fe/Ni multilayer structure wherein the skeletal portion of the porous metallic body is composed mainly of Fe and has an Ni covering layer on the surface thereof while pores communicating with the inside and outside of Fe skeletal portion exist in the Fe skeletal portion and the inside of the pores is covered with Ni. The electrode substrate is produced by applying an iron oxide powder of at most 20 .mu.m in an average particle size on a porous resin core body; heat treating the core to remove an organic resin component while simultaneously sintering Fe to obtain a porous Fe body; and then covering the Fe skeletal portion with Ni by electroplating. In this process, the iron oxide can be used in combination with carbon powder. Further, a nickel porous sintered body can also be produced using nickel oxide in place of iron oxide.Type: GrantFiled: August 18, 1998Date of Patent: August 15, 2000Assignees: Sumitomo Electric Industries, Ltd., Matsushita Electric Industrial Co., Ltd.Inventors: Keizo Harada, Kenichi Watanabe, Shosaku Yamanaka, Kiyoshi Hayashi, Nobuyasu Morishita, Hiroki Takeshima, Hideo Kaiya, Munehisa Ikoma
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Patent number: 6099991Abstract: An electrode excellent in high-rate discharge characteristics is provided by increasing the adhesive strength of the conductive core material to the sintered nickel porous body which form the sintered type substrate. The electrode of the present invention uses a sintered substrate containing a part wherein the diameter of the pores of the sintered nickel porous body becomes successively smaller from the joining interfaces of the conductive core material toward the outside surfaces of the substrate. The region wherein the diameter is greater than in other parts preferably ranges within about 1/5 of the substrate thickness starting from both surfaces of the core material toward the outside surfaces of the substrate.Type: GrantFiled: March 19, 1998Date of Patent: August 8, 2000Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Toru Inagaki, Hiroki Takeshima, Kazushige Sugimoto, Hideo Kaiya
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Patent number: 5968685Abstract: A battery electrode substrate which is constituted of a porous metallic body structure having communicating pores at a porosity of at least 90% and an Fe/Ni multilayer structure wherein the skeletal portion of the porous metallic body is composed mainly of Fe and has an Ni covering layer on the surface thereof while pores communicating with the inside and outside of Fe skeletal portion exist in the Fe skeletal portion and the inside of the pores is covered with Ni. The electrode substrate is produced by applying an iron oxide powder of at most 20 .mu.m in an average particle size on a porous resin core body; heat treating the core to remove an organic resin component while simultaneously sintering Fe to obtain a porous Fe body; and then covering the Fe skeletal portion with Ni by electroplating. In this process, the iron oxide can be used in combination with carbon powder. Further, a nickel porous sintered body can also be produced using nickel oxide in place of iron oxide.Type: GrantFiled: August 18, 1998Date of Patent: October 19, 1999Assignees: Sumitomo Electric Industries, Ltd., Matsushita Electric Industrial Co., Ltd.Inventors: Keizo Harada, Kenichi Watanabe, Shosaku Yamanaka, Kiyoshi Hayashi, Nobuyasu Morishita, Hiroki Takeshima, Hideo Kaiya, Munehisa Ikoma
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Patent number: 5888658Abstract: A battery electrode substrate which is constituted of a porous metallic body structure having communicating pores at a porosity of at least 90% and an Fe/Ni multilayer structure wherein the skeletal portion of the porous metallic body is composed mainly of Fe and has an Ni covering layer on the surface thereof while pores communicating with the inside and outside of Fe skeletal portion exist in the Fe skeletal portion and the inside of the pores is covered with Ni. The electrode substrate is produced by applying an iron oxide powder of at most 20 .mu.m in an average particle size on a porous resin core body; heat treating the core to remove an organic resin component while simultaneously sintering Fe to obtain a porous Fe body; and then covering the Fe skeletal portion with Ni by electroplating. In this process, the iron oxide can be used in combination with carbon powder. Further, a nickel porous sintered body can also be produced using nickel oxide in place of iron oxide.Type: GrantFiled: February 27, 1998Date of Patent: March 30, 1999Assignees: Sumitomo Electric Industries, Ltd., Matsushita Electric Industrial Co., Ltd.Inventors: Keizo Harada, Kenichi Watanabe, Shosaku Yamanaka, Kiyoshi Hayashi, Nobuyasu Morishita, Hiroki Takeshima, Hideo Kaiya, Munehisa Ikoma
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Patent number: 5851599Abstract: A battery electrode substrate which is constituted of a porous metallic body structure having communicating pores at a porosity of at least 90% and an Fe/Ni multilayer structure wherein the skeletal portion of the porous metallic body is composed mainly of Fe and has an Ni covering layer on the surface thereof while pores communicating with the inside and outside of Fe skeletal portion exist in the Fe skeletal portion and the inside of the pores is covered with Ni. The electrode substrate is produced by applying an iron oxide powder of at most 20 .mu.m in an average particle size on a porous resin core body; heat treating the core to remove an organic resin component while simultaneously sintering Fe to obtain a porous Fe body; and then covering the Fe skeletal portion with Ni by electroplating. In this process, the iron oxide can be used in combination with carbon powder. Further, a nickel porous sintered body can also be produced using nickel oxide in place of iron oxide.Type: GrantFiled: September 20, 1996Date of Patent: December 22, 1998Assignees: Sumitomo Electric Industries Co., Ltd., Matsushita Electric Industrial Co., Ltd.Inventors: Keizo Harada, Kenichi Watanabe, Shosaku Yamanaka, Kiyoshi Hayashi, Nobuyasu Morishita, Hiroki Takeshima, Hideo Kaiya, Munehisa Ikoma
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Patent number: 5837317Abstract: The present invention provides a method of producing a hydrogen storage alloy low in cobalt content which can restrains a decrease in cycle life characteristic and preservation characteristic of an alkaline storage battery when the alloy is used as a negative electrode. The method includes the following steps. An Mm-Ni system hydrogen storage alloy which has a crystal structure of CaCu.sub.5 and contains 15 atom % or less of cobalt is powdered to have an average particle diameter of 10-100 .mu.m. Then, the powdered alloy is immersed in a treatment solution at 80.degree.-130.degree. C., the treatment solution comprising an alkaline aqueous solution containing 10 g/l or more of lithium hydroxide and having a specific gravity of 1.1 or higher, and cobalt ions which is contained in the alkaline aqueous solution, thereby forming a layer containing nickel and cobalt in higher concentration than in the bulk of the powdered alloy onto the alloy surface.Type: GrantFiled: March 7, 1997Date of Patent: November 17, 1998Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yoshio Moriwaki, Yoichi Izumi, Yasuharu Yamamura, Hideo Kaiya
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Patent number: 5804334Abstract: The present invention provides an alkaline storage battery comprising a positive electrode containing a nickel hydroxide active material and a compound oxide in a range of 2 wt % to 30 wt % to the amount of the nickel hydroxide. The compound oxide contains at least one transition metal element and at least one rare earth element or alkaline earth metal element. The compound oxide has conductivity of 10.sup.-2 S/cm or higher at 25.degree. C. and stability in an alkaline electrolyte. Consequently, the alkaline storage battery shows excellent characteristics in a long-term preservation at a high temperature, capacity restoration, and charge/discharge cycle life.Type: GrantFiled: November 14, 1996Date of Patent: September 8, 1998Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yasuharu Yamamura, Masumi Katsumoto, Hideo Kaiya
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Patent number: 5700596Abstract: The tap density of nickel hydroxide powders is improved, the expansion of a positive electrode is inhibited and the energy density of the positive electrode and the cycle life characteristics are improved by specifying the shape of the nickel hydroxide powders and besides, adding to the nickel hydroxide powders at least one of Cd, Ca, Zn, Mg, Fe, Co and Mn. The nickel hydroxide active material powders contain 1-7 wt % of at least one of Cd, Ca, Zn, Mg, Fe, Co and Mn and comprise a mixture of spherical or nearly spherical particles and non-spherical particles.Type: GrantFiled: November 21, 1991Date of Patent: December 23, 1997Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Munehisa Ikoma, Norikatsu Akutsu, Masashi Enokido, Fumihiko Yoshii, Hideo Kaiya, Shingo Tsuda
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Patent number: 5681673Abstract: The present invention relates to an alkaline secondary battery improved in the structure of the plate substrate, and provides an alkaline secondary battery which uses a three-dimensional porous substrate which is inexpensive, improved in stability in electrolyte and inhibited from shrinkage at sintering. The battery has such a construction comprising a sealed case containing positive electrodes mainly composed of a nickel oxide, negative electrodes mainly composed of a hydrogen-absorbing alloy or a cadmium oxide, an alkaline electrolyte containing at least one component selected from the group consisting of potassium hydroxide, lithium hydroxide and sodium hydroxide and separators, the substrate used for at least one of the positive electrode and the negative electrode being a three-dimensional porous iron sintered body on the surface of which is provided a nickel coating layer.Type: GrantFiled: December 12, 1995Date of Patent: October 28, 1997Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yohei Hattori, Nobuyasu Morishita, Hiroki Takeshima, Hideo Kaiya, Munehisa Ikoma
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Patent number: 4938780Abstract: The present invention provides a paste type cadmium anode for alkali storage batteries which comprises an electrically conductive core material, an active material layer mainly composed of cadmium compounds and coated on the core material, an electrically conductive porous layer mainly composed of metallic nickel and provided on the surface of the active material layer, and an organic compound present between the active material layer mainly composed of cadmium compounds and the electrically conductive porous layer mainly composed of metallic nickel. This anode is improved in a cycle life owing to improvement in oxygen gas absorption and prevention of distortion of electrode plate.A method for making the anode is also provided.Type: GrantFiled: September 15, 1989Date of Patent: July 3, 1990Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hideo Kaiya, Katumi Yamashita, Masako Kusaka