Patents by Inventor Kuniyasu Oya
Kuniyasu Oya 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: 7659031Abstract: A size AA alkaline battery includes an anode principally composed of zinc functioning as an active material, a cathode principally composed of manganese dioxide or nickel oxyhydroxide functioning as an active material, a separator composed of a nonwoven fabric, an electrolyte composed of an aqueous solution of potassium hydroxide, and zinc oxide.Type: GrantFiled: November 8, 2005Date of Patent: February 9, 2010Assignee: Sony CorporationInventors: Kuniyasu Oya, Kenta Yamamoto, Naoko Yamakawa
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Patent number: 7122169Abstract: The present invention provides a nickel-zinc battery of an inside-out structure, that is, a battery comprising a positive electrode containing beta-type nickel oxyhydroxide and a negative electrode containing zinc and having a similar structure to an alkali manganese battery, in which the beta-type nickel oxyhydroxide consists of substantially spherical particles, mean particle size of which is within a range from 19 ?m to a maximum of 40 ?m, the bulk density of which is within a range from 1.6 g/cm3 to a maximum of 2.2 g/cm3, tap density of which is within a range from 2.2 g/cm3 to a maximum of 2.7 g/cm3, specific surface area which based on BET method is within a range from 3 m2/g to a maximum of 50 m2/g, and the positive electrode of the nickel zinc battery contains graphite powder, where the weight ratio of graphite powder against a total weight of the positive electrode is defined within a range from 4% to a maximum of 8%.Type: GrantFiled: June 9, 2003Date of Patent: October 17, 2006Assignee: Sony CorporationInventors: Kenta Yamamoto, Osamu Takahashi, Kazuo Honda, Kuniyasu Oya
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Publication number: 20060115731Abstract: A size AA alkaline battery includes an anode principally composed of zinc functioning as an active material, a cathode principally composed of manganese dioxide or nickel oxyhydroxide functioning as an active material, a separator composed of a nonwoven fabric, an electrolyte composed of an aqueous solution of potassium hydroxide, and zinc oxide.Type: ApplicationFiled: November 8, 2005Publication date: June 1, 2006Inventors: Kuniyasu Oya, Kenta Yamamoto, Naoko Yamakawa
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Patent number: 6908707Abstract: The present invention provides a nickel-zinc battery of an inside-out structure, that is, a battery comprising a positive electrode containing beta-type nickel oxyhydroxide and a negative electrode containing zinc and having a similar structure to an alkali manganese battery, in which the beta-type nickel oxyhydroxide consists of substantially spherical particles, mean particle size of which is within a range from 19 ?m to a maximum of 40 ?m, the bulk density of which is within a range from 1.6 g/cm3 to a maximum of 2.2 g/cm3, tap density of which is within a range from 2.2 g/cm3 to a maximum of 2.7 g/cm3, specific surface area which based on BET method is within a range from 3 m2/g to a maximum of 50 m2/g, and the positive electrode of the nickel zinc battery contains graphite powder, where the weight ratio of graphite powder against a total weight of the positive electrode is defined within a range from 4% to a maximum of 8%.Type: GrantFiled: June 9, 2003Date of Patent: June 21, 2005Assignee: Sony CorporationInventors: Kenta Yamamoto, Osamu Takahashi, Kazuo Honda, Kuniyasu Oya
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Publication number: 20050008936Abstract: The present invention provides an alkaline battery suitable for use as a primary or secondary battery as a power source of electronic appliances. The battery is excellent in discharge characteristics under a heavy load and in cycle characteristics. The alkaline battery (100) comprises a cathode mix (3) containing ?-nickel oxy-hydroxide, an anode mix (5) containing zinc as a main component of anode active material, and an alkali solution as an electrolyte, wherein the cathode mix (3) includes a mixture of ?-nickel oxy-hydroxide, graphite powder, and a potassium hydroxide solution in a given weight ratio. The ?-nickel oxy-hydroxide is prepared by chemical oxidation and has an approximately spherical shape of particle with a mean particle size in the range of 5 to 50 ?m.Type: ApplicationFiled: April 15, 2004Publication date: January 13, 2005Inventors: Akio Takahashi, Shinichiro Morikawa, Naoki Hayashi, Kazuo Honda, Kuniyasu Oya, Kenta Yamamoto, Noriyuki Kobayashi
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Patent number: 6686091Abstract: The present invention provides a nickel-zinc battery of an inside-out structure, that is, a battery comprising a positive electrode containing beta-type nickel oxyhydroxide and a negative electrode containing zinc and having a similar structure to an alkali manganese battery, in which the beta-type nickel oxyhydroxide consists of substantially spherical particles, mean particle size of which is within a range from 19 &mgr;m to a maximum of 40 &mgr;m, the bulk density of which is within a range from 1.6 g/cm3 to a maximum of 2.2 g/cm3, tap density of which is within a range from 2.2 g/cm3 to a maximum of 2.7 g/cm3, specific surface area which based on BET method is within a range from 3 m2/g to a maximum of 50 m2/g, and the positive electrode of the nickel zinc battery contains graphite powder, where the weight ratio of graphite powder against a total weight of the positive electrode is defined within a range from 4% to a maximum of 8%.Type: GrantFiled: April 19, 2001Date of Patent: February 3, 2004Assignee: Sony CorporationInventors: Kenta Yamamoto, Osamu Takahashi, Kazuo Honda, Kuniyasu Oya
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Publication number: 20030211033Abstract: The present invention provides a nickel-zinc battery of an inside-out structure, that is, a battery comprising a positive electrode containing beta-type nickel oxyhydroxide and a negative electrode containing zinc and having a similar structure to an alkali manganese battery, in which the beta-type nickel oxyhydroxide consists of substantially spherical particles, mean particle size of which is within a range from 19 &mgr;m to a maximum of 40 &mgr;m, the bulk density of which is within a range from 1.6 g/cm3 to a maximum of 2.2 g/cm3, tap density of which is within a range from 2.2 g/cm3 to a maximum of 2.7 g/cm3, specific surface area which based on BET method is within a range from 3 m2/g to a maximum of 50 m2/g, and the positive electrode of the nickel zinc battery contains graphite powder, where the weight ratio of graphite powder against a total weight of the positive electrode is defined within a range from 4% to a maximum of 8%.Type: ApplicationFiled: June 9, 2003Publication date: November 13, 2003Inventors: Kenta Yamamoto, Osamu Takahashi, Kazuo Honda, Kuniyasu Oya
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Publication number: 20030211393Abstract: The present invention provides a nickel-zinc battery of an inside-out structure, that is, a battery comprising a positive electrode containing beta-type nickel oxyhydroxide and a negative electrode containing zinc and having a similar structure to an alkali manganese battery, in which the beta-type nickel oxyhydroxide consists of substantially spherical particles, mean particle size of which is within a range from 19 &mgr;m to a maximum of 40 &mgr;m, the bulk density of which is within a range from 1.6 g/cm3 to a maximum of 2.2 g/cm3, tap density of which is within a range from 2.2 g/cm3 to a maximum of 2.7 g/cm3, specific surface area which based on BET method is within a range from 3 m2/g to a maximum of 50 m2/g, and the positive electrode of the nickel zinc battery contains graphite powder, where the weight ratio of graphite powder against a total weight of the positive electrode is defined within a range from 4% to a maximum of 8%.Type: ApplicationFiled: June 9, 2003Publication date: November 13, 2003Inventors: Kenta Yamamoto, Osamu Takahashi, Kazuo Honda, Kuniyasu Oya
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Patent number: 6413666Abstract: A battery in which an electrolytic solution may be prevented from leakage. Within a battery case in the form of a bottomed tube, a positive electrode, a negative electrode and an electrolyte are arranged. An opening in the battery case is sealed by a battery lid having a degassing hole, which degassing hole is covered by a sheathing member.Type: GrantFiled: October 27, 2000Date of Patent: July 2, 2002Assignee: Sony CorporationInventor: Kuniyasu Oya
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Publication number: 20020034470Abstract: The present invention provides a nickel-zinc battery of an inside-out structure, that is, a battery comprising a positive electrode containing beta-type nickel oxyhydroxide and a negative electrode containing zinc and having a similar structure to an alkali manganese battery, in which the beta-type nickel oxyhydroxide consists of substantially spherical particles, mean particle size of which is within a range from l9 &mgr;m to a maximum of 40 &mgr;m, the bulk density of which is within a range from 1.6 g/cm3 to a maximum of 2.2 g/cm3, tap density of which is within a range from 2.2 g/cm3 to a maximum of 2.7 g/cm3, specific surface area which based on BET method is within a range from 3 m2/g to a maximum of 50 m2/g, and the positive electrode of the nickel zinc battery contains graphite powder, where the weight ratio of graphite powder against a total weight of the positive electrode is defined within a range from 4% to a maximum of 8%.Type: ApplicationFiled: April 19, 2001Publication date: March 21, 2002Inventors: Kenta Yamamoto, Osamu Takahashi, Kazuo Honda, Kuniyasu Oya
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Patent number: 5173379Abstract: A battery including a sealing member 10 for sealing an opening 7 of a battery housing 1, a current collecting pin 5 press-fitted in a through hole 11 formed through the sealing member 10, and a reinforcing member 20 for reinforcing the sealing member 10. The reinforcing member 20 is constituted of a thick-walled portion 21 for covering an outer circumferential surface of a cylindrical portion 12 of the sealing member 10 forming the through hole 11 and a disk portion 22 extending radially outwardly from the thick-walled portion 21. A space 8 is defined between the sealing member 10 and the reinforcing member 20, and a thin-walled portion 13 for preventing an increase in internal pressure in the battery housing 1 is formed in the sealing member 10 at a position opposed to the space 8. The sealing member 10 is reinforced by the thick-walled portion 21 to thereby prevent generation of cracks in the sealing member 10 and electrolyte leakage accompanied thereby.Type: GrantFiled: January 10, 1992Date of Patent: December 22, 1992Assignee: Sony CorporationInventors: Yoshinari Ichinose, Kuniyasu Oya, Shinichi Ando, Kazuhiro Hashimoto