Patents by Inventor Mikito Nagata
Mikito Nagata 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: 7348099Abstract: A nonaqueous secondary electrolytic battery comprising an electricity-generating element formed by spirally winding a laminate of a positive electrode plate, a separating material and a negative electrode plate, and an electrolytic solution with which the separating material, if it is a separator, is impregnated. The electricity-generating element is sealed in a battery case formed by a resin-laminated sheet comprising a metal layer as a barrier layer. Only a pair of lead terminals are drawn to the exterior of the battery case. The resin sheet comprises an oriented resin layer laminated on both surfaces of the metal layer. The inner heat-fused layers are opposed and heat-fused to each other. A molten and solidified resin mass is formed protruding from the inner end of the welded portion toward the inner space of the battery by 0.1 mm or more. Alternatively, the welded portion is formed thinner at the outer end thereof than at the inner end thereof.Type: GrantFiled: October 26, 2006Date of Patent: March 25, 2008Assignee: GS Yuasa CorporationInventors: Hiroshi Mukai, Tetsuya Murai, Shinya Kitano, Mikio Okada, Hiroshi Nakahara, Mikito Nagata, Hiroyuki Yumoto
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Patent number: 7267904Abstract: A nonaqueous secondary electrolytic battery comprising an electricity-generating element formed by spirally winding a laminate of a positive electrode plate, a separating material and a negative electrode plate, and an electrolytic solution with which the separating material, if it is a separator, is impregnated. The electricity-generating element is sealed in a battery case formed by a resin-laminated sheet comprising a metal layer as a barrier layer. Only a pair of lead terminals are drawn to the exterior of the battery case. The resin sheet comprises an oriented resin layer laminated on both surfaces of the metal layer. The inner heat-fused layers are opposed and heat-fused to each other. A molten and solidified resin mass is formed protruding from the inner end of the welded portion toward the inner space of the battery by 0.1 mm or more. Alternatively, the welded portion is formed thinner at the outer end thereof than at the inner end thereof.Type: GrantFiled: November 14, 2003Date of Patent: September 11, 2007Assignee: GS Yuasa CorporationInventors: Shigeo Komatsu, Hiroshi Mukai, Tetsuya Murai, Shinya Kitano, Mikio Okada, Hiroshi Nakahara, Mikito Nagata, Hiroyuki Yumoto
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Patent number: 7205068Abstract: An energy storage device, such as an electrical storage battery, having a unique terminal structure, sealing arrangement and an S-shaped mandrel for the electrode assembly. The battery generally includes a case in which an electrode assembly is dispose, and a cover provided with a fill hole and fill plug, and a terminal structure that forms a battery terminal. The terminal hole and the fill hole have counter bore structure to provide tighter sealing. A nickel layer is provided on the aluminum fill plug to facilitate electrical contact with the external circuit. A mandrel is provided for the rolled electrode assembly, and is electrically coupled to the terminal structure via a push-in tab inserted into a space in the S-shape of the mandrel.Type: GrantFiled: October 27, 2003Date of Patent: April 17, 2007Assignee: Quallion LLCInventors: Wendy Fong, Mikito Nagata, Andrew Szyszkowski, Hisashi Tsukamoto
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Publication number: 20070065728Abstract: The battery includes an electrolyte activating one or more cathodes and one or more anodes. The electrolyte includes one or more salts in a solvent. The solvent includes one or more organic solvents and one or more silanes and/or one or more siloxanes.Type: ApplicationFiled: February 2, 2006Publication date: March 22, 2007Inventors: Zhengcheng Zhang, Phuong-Nghi Lam, Mikito Nagata, Hisashi Tsukamoto
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Publication number: 20070059596Abstract: A nonaqueous secondary electrolytic battery comprising an electricity-generating element formed by spirally winding a laminate of a positive electrode plate, a separating material and a negative electrode plate, and an electrolytic solution with which the separating material, if it is a separator, is impregnated. The electricity-generating element is sealed in a battery case formed by a resin-laminated sheet comprising a metal layer as a barrier layer. Only a pair of lead terminals are drawn to the exterior of the battery case. The resin sheet comprises an oriented resin layer laminated on both surfaces of the metal layer. The inner heat-fused layers are opposed and heat-fused to each other. A molten and solidified resin mass is formed protruding from the inner end of the welded portion toward the inner space of the battery by 0.1 mm or more. Alternatively, the welded portion is formed thinner at the outer end thereof than at the inner end thereof.Type: ApplicationFiled: October 26, 2006Publication date: March 15, 2007Applicant: GS YUASA CORPORATIONInventors: Hiroshi MUKAI, Tetsuya MURAI, Shinya KITANO, Mikio OKADA, Hiroshi NAKAHARA, Mikito NAGATA, Hiroyuki YUMOTO
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Patent number: 7174207Abstract: A defibrillator is disclosed. The defibrillator includes a secondary battery having a volume less than 5 cc. One or more capacitors are configured to store electrical energy from the battery in an amount sufficient to provide a patient with one or more defibrillation shocks. A processing unit is configured to control the storage of electrical energy in the one or more capacitors and to control the discharge of the electrical energy from the one or more capacitors. The battery can have a total volume of less than 4 cc or less than 3 cc.Type: GrantFiled: September 23, 2004Date of Patent: February 6, 2007Assignee: Quallion LLCInventors: Joanna Dodd, Hisashi Tsukamoto, Mikito Nagata
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Publication number: 20060251968Abstract: The battery includes a positive electrode having a first active material on a positive substrate. The first active material includes LiNixCo1-x-yMyO2 wherein M is chosen from the group consisting of Mn, Al, Mg, B, Ti, and Li, and wherein 0.5?x?1 and 0?y?0.3. The battery also includes a negative electrode having a second active material on a negative substrate. The second active material includes carbon. The negative electrode is susceptible to damage when a voltage exceeding a Damage Potential Threshold (DPT) is applied to the negative electrode. The DPT is lower than the maximum positive operating potential of the battery. The positive and negative electrodes define a Zero Volt Crossing Potential (ZCP) relative to a reference level when the voltage between the positive electrode and the negative electrode is zero. The positive electrode and the negative electrode are configured such that the value of the ZCP is less than the value of the DPT at a predetermined temperature.Type: ApplicationFiled: July 6, 2006Publication date: November 9, 2006Inventors: Hisashi Tsukamoto, Clay Kishiyama, Mikito Nagata, Hiroshi Nakahara, Tiehua Piao
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Patent number: 7101642Abstract: A lithium ion battery particularly configured to be able to discharge to a very low voltage, e.g. zero volts, without causing permanent damage to the battery. More particularly, the battery is configured to define a Zero Volt Crossing Potential (ZCP) which is lower than a Damage Potential Threshold (DPT). A method for using a battery capable of tolerating discharge to zero volts is also disclosed.Type: GrantFiled: September 30, 2002Date of Patent: September 5, 2006Assignee: Quallion LLCInventors: Hisashi Tsukamoto, Clay Kishiyama, Mikito Nagata, Hiroshi Nakahara, Tiehua Piao
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Publication number: 20060064130Abstract: A defibrillator is disclosed. The defibrillator includes a secondary battery having a volume less than 5 cc. One or more capacitors are configured to store electrical energy from the battery in an amount sufficient to provide a patient with one or more defibrillation shocks. A processing unit is configured to control the storage of electrical energy in the one or more capacitors and to control the discharge of the electrical energy from the one or more capacitors. The battery can have a total volume of less than 4 cc or less than 3 cc.Type: ApplicationFiled: September 23, 2004Publication date: March 23, 2006Inventors: Joanna Dodd, Hisashi Tsukamoto, Mikito Nagata
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Patent number: 7003356Abstract: The present invention is an efficient and economical battery sealing and supporting device and method. Among a variety of possible applications, the present invention may be utilized as an improved device and method that facilitates the use of cochlear stimulators designed to allow deaf and near deaf patients to experience the sensation of sound waves through electromechanical stimulation. The present invention eliminates the introduction of sweat, body fluid and other contaminants to the battery terminal connection area, which results in corrosion and eventually disables the connected device. Given its broad scope, the technology associated with the present invention is useful in medical and other areas, such as in military applications, hand-held computer and Internet systems and personal entertainment devices.Type: GrantFiled: April 17, 2002Date of Patent: February 21, 2006Assignee: Quallion LLCInventors: Hisashi Tsukamoto, Mikito Nagata, David DeMuth, Michael Bowers
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Patent number: 6998192Abstract: A negative electrode for use in secondary battery with nonaqueous electrolyte having a high voltage and energy density and a superior cycle property, characterized in that the active material comprises composite carbon materials containing massive ball-shaped graphite particles, carbon fibers, and graphite flakes. The massive ball-shaped graphite particles provide porosity to the composite, the carbon fibers improve packing density, conductivity, and stiffness to prevent the body made thereof from swelling and decomposing, and the graphite flakes reduce friction in the mixture. An aqueous, non-fluorine-containing binder is used, along with a titanium negative substrate.Type: GrantFiled: August 28, 2003Date of Patent: February 14, 2006Assignee: Quallion LLCInventors: Hiroyuki Yumoto, Joanna Dodd, Mikito Nagata, Phuong-Nghi Lam
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Publication number: 20050031960Abstract: An electric storage battery and method of manufacture thereof. Active material (78) is removed from both sides of the outer end (88) of the negative electrode (70) in a jellyroll (84) to allow room for adhesive tape (96) to secure the jellyroll.Type: ApplicationFiled: January 15, 2003Publication date: February 10, 2005Inventors: Hiroshi Nakahara, Mikito Nagata, David Skinlo, Hisashi Tsukamoto, Hiroyuki Yumoto
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Patent number: 6852449Abstract: A negative electrode for use in secondary battery with nonaqueous electrolyte having a high voltage and energy density and a superior cycle property, characterized in that the active material comprises composite carbon materials containing hard spherical particles, carbon fibers, and graphite flakes. The hard spheres provide structure to the composite, the carbon fibers improve packing density, conductivity, and stiffness to prevent the body made thereof from swelling and decomposing, and the graphite flakes reduce friction in the mixture. An aqueous, non-fluorine-containing binder is used, along with a titanium negative substrate.Type: GrantFiled: October 3, 2002Date of Patent: February 8, 2005Assignee: Quallion LLCInventors: Mikito Nagata, Hiroyuki Yumoto, Hisashi Tsukamoto
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Publication number: 20040214076Abstract: An electric storage battery and method of manufacture thereof characterized by a feed through pin (12) which is internally directly physically and electrically connected to an inner end of a positive electrode substrate (32). A C-shaped mandrel (48) extends around the pin and substrate end enabling the pin/mandrel to be used during the manufacturing process as an arbor to facilitate winding layers of a spiral jellyroll electrode assembly. The pin additionally extends from the battery case (101) and in the final product constitutes one of the battery terminals (14) with the battery case comprising the other terminal. The electrolyte is injected through the open end of the case after the end cap is welded to the negative electrode but before sealing the end cap to the case. The electrolyte is preferably injected through the C-shaped mandrel to facilitate and speed filling.Type: ApplicationFiled: January 20, 2004Publication date: October 28, 2004Inventors: Hisashi Tsukamoto, Andrew Szyszkowski, David M. Skinlo, Mikito Nagata, Hiroyuki Yumoto
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Publication number: 20040121230Abstract: An energy storage device, such as an electrical storage battery, having a unique terminal structure, sealing arrangement and an S-shaped mandrel for the electrode assembly. The battery generally includes a case in which an electrode assembly is dispose, and a cover provided with a fill hole and fill plug, and a terminal structure that forms a battery terminal. The terminal hole and the fill hole have counter bore structure to provide tighter sealing. A nickel layer is provided on the aluminum fill plug to facilitate electrical contact with the external circuit. A mandrel is provided for the rolled electrode assembly, and is electrically coupled to the terminal structure via a push-in tab inserted into a space in the S-shape of the mandrel.Type: ApplicationFiled: October 27, 2003Publication date: June 24, 2004Inventors: Wendy Fong, Mikito Nagata, Andrew Szyszkowski, Hisashi Tsukamoto
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Publication number: 20040096735Abstract: A nonaqueous secondary electrolytic battery comprising an electricity-generating element formed by spirally winding a laminate of a positive electrode plate, a separating material and a negative electrode plate, and an electrolytic solution with which the separating material, if it is a separator, is impregnated. The electricity-generating element is sealed in a battery case formed by a resin-laminated sheet comprising a metal layer as a barrier layer. Only a pair of lead terminals are drawn to the exterior of the battery case. The resin sheet comprises an oriented resin layer laminated on both surfaces of the metal layer. The inner heat-fused layers are opposed and heat-fused to each other. A molten and solidified resin mass is formed protruding from the inner end of the welded portion toward the inner space of the battery by 0.1 mm or more. Alternatively, the welded portion is formed thinner at the outer end thereof than at the inner end thereof.Type: ApplicationFiled: November 14, 2003Publication date: May 20, 2004Applicant: JAPAN STORAGE BATTERY CO., LTD.Inventors: Shigeo Komatsu, Hiroshi Mukai, Tetsuya Murai, Shinya Kitano, Mikio Okada, Minoru Mizutani, Hiroshi Nakahara, Mikito Nagata, Hiroyuki Yumoto
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Publication number: 20040086783Abstract: An energy storage device, such as an electrical storage battery, having a unique terminal structure, sealing arrangement and an S-shaped mandrel for the electrode assembly. The battery generally includes a case in which an electrode assembly is dispose, and a cover provided with a fill hole and fill plug, and a terminal structure that forms a battery terminal. The terminal hole and the fill hole have counter bore structure to provide tighter sealing. A nickel layer is provided on the aluminum fill plug to facilitate electrical contact with the external circuit. A mandrel is provided for the rolled electrode assembly, and is electrically coupled to the terminal structure via a push-in tab inserted into a space in the S-shape of the mandrel.Type: ApplicationFiled: October 27, 2003Publication date: May 6, 2004Inventors: Wendy Fong, Mikito Nagata, Andrew Szyszkowski, Hisashi Tsukamoto
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Publication number: 20040043293Abstract: A negative electrode for use in secondary battery with nonaqueous electrolyte having a high voltage and energy density and a superior cycle property, characterized in that the active material comprises composite carbon materials containing hard spherical particles, carbon fibers, and graphite flakes. The hard spheres provide structure to the composite, the carbon fibers improve packing density, conductivity, and stiffness to prevent the body made thereof from swelling and decomposing, and the graphite flakes reduce friction in the mixture. An aqueous, non-fluorine-containing binder is used, along with a titanium negative substrate.Type: ApplicationFiled: October 3, 2002Publication date: March 4, 2004Applicant: Quallion LLC,Inventors: Mikito Nagata, Hiroyuki Yumoto, Hisashi Tsukamoto
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Patent number: 6677076Abstract: An electric storage battery and method of manufacture thereof characterized by a feedthrough pin which is internally directly physically and electrically connected to an inner end of a positive electrode substrate. A C-shaped mandrel extends around the pin and substrate end enabling the pin/mandrel to be used during the manufacturing process as an arbor to facilitate winding layers of a spiral jellyroll electrode assembly. The pin additionally extends from the battery case and in the final product constitutes one of the battery terminals with the battery case comprising the other terminal. Active material is removed from both sides of the outer end of the negative electrode in the jellyroll to allow room for adhesive tape to secure the jellyroll. The electrolyte is injected through the open end of the case after the endcap is welded to the negative electrode but before sealing the endcap to the case. The electrolyte is preferably injected through the C-shaped mandrel to facilitate and speed filling.Type: GrantFiled: June 12, 2002Date of Patent: January 13, 2004Assignee: Quallion LLCInventors: Hiroshi Nakahara, David M. Skinlo, Hisashi Tsukamoto, Mikito Nagata
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Patent number: 6673489Abstract: An energy storage device, such as an electrical storage battery, having a unique terminal structure, sealing arrangement and an S-shaped mandrel for the electrode assembly. The battery generally includes a case in which an electrode assembly is dispose, and a cover provided with a fill hole and fill plug, and a terminal structure that forms a battery terminal. The terminal hole and the fill hole have counter bore structure to provide tighter sealing. A nickel layer is provided on the aluminum fill plug to facilitate electrical contact with the external circuit. A mandrel is provided for the rolled electrode assembly, and is electrically coupled to the terminal structure via a push-in tab inserted into a space in the S-shape of the mandrel.Type: GrantFiled: December 28, 2001Date of Patent: January 6, 2004Assignee: Quallion LLCInventors: Wendy Fong, Mikito Nagata, Andrew Szyszkowski, Hisashi Tsukamoto