Patents by Inventor Jun Nunome
Jun Nunome 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: 9209431Abstract: In an alkaline battery in which a positive electrode 2 containing manganese dioxide, a negative electrode 3, and a separator 4 interposed therebetween are housed in a closed-end cylindrical battery case 1 whose opening is sealed with a gasket 5, a half-width of a 110 plane peak of the manganese dioxide measured by a powder X-ray diffraction analysis is in the range of 1.80-2.40 degrees, and anatase titanium dioxide is contained in the positive electrode such that a ratio of anatase titanium dioxide to the positive electrode is in the range of 0.10-1.50 mass %.Type: GrantFiled: February 25, 2013Date of Patent: December 8, 2015Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Jun Nunome, Fumio Kato
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Patent number: 9190655Abstract: A lithium primary battery includes a positive electrode 1 using iron sulfide as a positive electrode active material, a negative electrode 2 using a lithium alloy as a negative electrode active material, an electrode group 4 formed by winding the positive and negative electrodes 1, 2 with a separator 3 being interposed therebetween, and a non-aqueous electrolytic solution. The lithium alloy contains at least one of magnesium or tin in a range of 0.02-0.2 mol %.Type: GrantFiled: September 13, 2011Date of Patent: November 17, 2015Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Jun Nunome, Fumio Kato, Futoshi Tanigawa, Yoshiki Fukuhara
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Patent number: 9159993Abstract: In an alkaline battery, a positive electrode 2 containing manganese dioxide, a negative electrode 3, and a separator 4 interposed therebetween are housed in a closed-end cylindrical battery case 1 whose opening 1b is sealed with a gasket. The positive electrode contains graphite in such a manner that a ratio of graphite to the positive electrode is in the range of 2.5-4.3 mass %. A half-width of a 110 plane of the manganese dioxide measured by a powder X-ray diffraction analysis is in the range of 2.00-2.40 degrees.Type: GrantFiled: February 25, 2013Date of Patent: October 13, 2015Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Jun Nunome, Fumio Kato
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Publication number: 20140349174Abstract: In an alkaline battery in which a positive electrode 2 containing manganese dioxide, a negative electrode 3, and a separator 4 interposed therebetween are housed in a closed-end cylindrical battery case 1 whose opening is sealed with a gasket 5, a half-width of a 110 plane peak of the manganese dioxide measured by a powder X-ray diffraction analysis is in the range of 1.80-2.40 degrees, and anatase titanium dioxide is contained in the positive electrode such that a ratio of anatase titanium dioxide to the positive electrode is in the range of 0.10-1.50 mass %.Type: ApplicationFiled: February 25, 2013Publication date: November 27, 2014Applicant: PANASONIC CORPORATIONInventors: Jun Nunome, Fumio Kato
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Patent number: 8790806Abstract: In an alkaline battery in which an opening of a battery case 1 containing a power-generating element is sealed via a sealing plate 7 with a gasket 5 interposed between the battery case 1 and the sealing plate 7, the sealing plate 7 has a vent 7a, the gasket 5 has an explosion-proof valve 5a, an electrolyte filter 9 made of a porous membrane is disposed in a space defined by the sealing plate 7 and the gasket 5, a volume of a space defined by the sealing plate 7 and the electrolyte filter 9 is greater than or equal to 0.25 cm3, and a tensile stress of the electrolyte filter 9 at 100% tensile elongation in at least one direction is in a range of 60-4000 N/m.Type: GrantFiled: April 3, 2012Date of Patent: July 29, 2014Assignee: Panasonic CorporationInventors: Jun Nunome, Fumio Kato, Fumiharu Sakashita, Isamu Saruwatari
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Publication number: 20140186711Abstract: In an alkaline secondary battery including a gelled negative electrode containing zinc alloy powder, an aspect ratio of a particle of the zinc alloy powder is within a range of 2.0-2.4, and the zinc alloy contains 150-350 ppm of bismuth, and 600-1500 ppm of indium.Type: ApplicationFiled: December 5, 2011Publication date: July 3, 2014Inventors: Jun Nunome, Fumio Kato, Machiko Tsukiji
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Patent number: 8709646Abstract: In an alkaline battery in which a positive electrode 2 made of manganese dioxide and a negative electrode 3 are contained in a cylindrical battery case 1 having a closed bottom with a separator 4 interposed between the positive and negative electrodes 2 and 3, and an opening 1b of the battery case 1 is sealed via a sealing plate with a gasket 5 interposed between the battery case 1 and the sealing plate, a thickness of a body 1a of the battery case 1 is in a range of 0.10-0.17 mm, and a half-width of a 110 plane of the manganese dioxide measured by powder X-ray diffraction is in a range of 2.30-2.70 degrees.Type: GrantFiled: August 21, 2012Date of Patent: April 29, 2014Assignee: Panasonic CorporationInventors: Jun Nunome, Fumio Kato, Machiko Tsukiji
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Publication number: 20140087240Abstract: In an alkaline battery, a positive electrode 2 containing manganese dioxide, a negative electrode 3, and a separator 4 interposed therebetween are housed in a closed-end cylindrical battery case 1 whose opening 1b is sealed with a gasket. The positive electrode contains graphite in such a manner that a ratio of graphite to the positive electrode is in the range of 2.5-4.3 mass %. A half-width of a 110 plane of the manganese dioxide measured by a powder X-ray diffraction analysis is in the range of 2.00-2.40 degrees.Type: ApplicationFiled: February 25, 2013Publication date: March 27, 2014Applicant: PANASONIC CORPORATIONInventors: Jun Nunome, Fumio Kato
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Patent number: 8668999Abstract: A lithium primary battery 10 includes an electrode group in which a positive electrode 1 having iron disulfide as a positive electrode active material and a negative electrode 2 having lithium as a negative electrode active material are wound, with a separator 3 interposed between the positive electrode 1 and the negative electrode, wherein a density of the iron disulfide in a positive electrode mixture containing the positive electrode active material is in a range of 2.2-2.9 g/cm3, and the separator 3 is made of a non-woven fabric whose tensile strength is in a range of 6-30 N/mm2.Type: GrantFiled: November 10, 2010Date of Patent: March 11, 2014Assignee: Panasonic CorporationInventors: Jun Nunome, Fumio Kato, Kenichi Morigaki, Shinichiro Tahara
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Patent number: 8652690Abstract: Reducing an initial voltage degrades intermediate-load discharge performance. In a lithium primary battery containing iron disulfide as a positive electrode active material, a solvent of a nonaqueous electrolyte contains DIOX and DME as main components, and further contains THF. Moreover, the content of THF is 20 vol. % or lower.Type: GrantFiled: November 1, 2011Date of Patent: February 18, 2014Assignee: Panasonic CorporationInventors: Jun Nunome, Fumio Kato, Toshiyuki Shimizu
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Publication number: 20130236775Abstract: In an alkaline battery in which a positive electrode 2 made of manganese dioxide and a negative electrode 3 are contained in a cylindrical battery case 1 having a closed bottom with a separator 4 interposed between the positive and negative electrodes 2 and 3, and an opening 1b of the battery case 1 is sealed via a sealing plate with a gasket 5 interposed between the battery case 1 and the sealing plate, a thickness of a body 1a of the battery case 1 is in a range of 0.10-0.17 mm, and a half-width of a 110 plane of the manganese dioxide measured by powder X-ray diffraction is in a range of 2.30-2.70 degrees.Type: ApplicationFiled: August 21, 2012Publication date: September 12, 2013Applicant: PANASONIC CORPORATIONInventors: Jun Nunome, Fumio Kato, Machiko Tsukiji
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Publication number: 20130209842Abstract: In an alkaline battery in which an opening of a battery case 1 containing a power-generating element is sealed via a sealing plate 7 with a gasket 5 interposed between the battery case 1 and the sealing plate 7, the sealing plate 7 has a vent 7a, the gasket 5 has an explosion-proof valve 5a, an electrolyte filter 9 made of a porous membrane is disposed in a space defined by the sealing plate 7 and the gasket 5, a volume of a space defined by the sealing plate 7 and the electrolyte filter 9 is greater than or equal to 0.25 cm3, and a tensile stress of the electrolyte filter 9 at 100% tensile elongation in at least one direction is in a range of 60-4000 N/m.Type: ApplicationFiled: April 3, 2012Publication date: August 15, 2013Applicant: PANASONIC CORPORATIONInventors: Jun Nunome, Fumio Kato, Fumiharu Sakashita, Isamu Saruwatari
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Publication number: 20130202933Abstract: A lithium primary battery includes a positive electrode 1 using iron sulfide as a positive electrode active material, a negative electrode 2 using a lithium alloy as a negative electrode active material, an electrode group 4 formed by winding the positive and negative electrodes 1, 2 with a separator 3 being interposed therebetween, and a non-aqueous electrolytic solution. The lithium alloy contains at least one of magnesium or tin in a range of 0.02-0.2 mol %.Type: ApplicationFiled: September 13, 2011Publication date: August 8, 2013Applicant: PANASONIC CORPORATIONInventors: Jun Nunome, Fumio Kato, Futoshi Tanigawa, Yoshiki Fukuhara
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Publication number: 20130017423Abstract: An alkaline secondary battery including: a hollow cylindrical positive electrode; a negative electrode containing zinc as an active material; a separator arranged between the positive electrode and the negative electrode; an alkaline electrolytic solution; and a battery case containing the positive electrode, the negative electrode, the separator, and the alkaline electrolytic solution, wherein the positive electrode has a porosity of 34% or higher, and the separator is a hydrophilized microporous polyolefin film.Type: ApplicationFiled: May 29, 2012Publication date: January 17, 2013Inventors: Machiko TSUKIJI, Jun Nunome, Miyuki Nakai, Fumio Kato
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Publication number: 20120308901Abstract: Reducing an initial voltage degrades intermediate-load discharge performance. In a lithium primary battery containing iron disulfide as a positive electrode active material, a solvent of a nonaqueous electrolyte contains DIOX and DME as main components, and further contains THF. Moreover, the content of THF is 20 vol. % or lower.Type: ApplicationFiled: November 1, 2011Publication date: December 6, 2012Inventors: Jun Nunome, Fumio Kato, Toshiyuki Shimizu
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Publication number: 20120202118Abstract: A lithium primary battery including: a positive electrode 1 using iron disulfide as a positive electrode active material, wherein the positive electrode 1 includes a positive electrode mixture containing the positive electrode active material and a conductive agent, and a positive electrode core which is made of a porous metal member, and is filled with the positive electrode mixture, the iron disulfide has an average particle size of 20-50 ?m, the conductive agent has a specific surface area of 300 m2/g or larger, and the iron disulfide and the conductive agent in the positive electrode mixture are mixed in a mass ratio of 97:3-93:7.Type: ApplicationFiled: September 28, 2010Publication date: August 9, 2012Inventors: Fumio Kato, Jun Nunome, Yoshiki Fukuhara, Toshiyuki Shimizu
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Patent number: 8206851Abstract: An AA alkaline battery includes a positive electrode containing larger than or equal to 9.30 g of manganese dioxide. An AAA alkaline battery includes a positive electrode containing larger than or equal to 4.09 g of manganese dioxide. The cumulative pore volume of pores having diameters from 0.97 ?m to 10.2 ?m, both inclusive, is in the range from 0.0035 ml/g to 0.0070 ml/g, both inclusive, in measurement of pore size distribution in the positive electrode performed by mercury intrusion porosimetry.Type: GrantFiled: April 1, 2009Date of Patent: June 26, 2012Assignee: Panasonic CorporationInventors: Jun Nunome, Kato Fumio, Harunari Shimamura
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Publication number: 20120028092Abstract: An AA lithium primary battery includes: an electrode group 4 including a positive electrode 1 containing iron sulfide as a positive electrode active material, and a negative electrode 2 containing lithium as a negative electrode active material which are wound with a separator 3 interposed therebetween. Part of the negative electrode 2 facing the positive electrode 1 has a mass of 0.86-1.1 g, a total volume of pores in the separator 3 having a pore size of 0.1-10 ?m is 0.25 ml/g or lower, and a Gurley number of the separator 3 is 100-1000 sec/100 ml.Type: ApplicationFiled: December 17, 2010Publication date: February 2, 2012Inventors: Jun Nunome, Kato Fumio, Fukuhara Yoshiki, Tahara Shinichiro
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Publication number: 20120009465Abstract: An alkaline battery which is superior in high-rate discharge characteristics and in moderate- and low-rate discharge characteristics is provided. An alkaline battery according to the present invention includes a closed-end cylindrical battery case 8 housing a hollow cylindrical positive electrode 2, a negative electrode 3 disposed in a hollow portion of the positive electrode 2, a separator 4 sandwiched between the positive electrode 2 and the negative electrode 3, and an alkaline electrolyte. The negative electrode 3 is made of a zinc porous body made of a collection of zinc fibers. The alkaline electrolyte includes 0.05% to 0.5% by mass, both inclusive, of at least one of polyacrylate and polyacrylic acid with respect to a mass of zinc in the negative electrode 3.Type: ApplicationFiled: October 2, 2009Publication date: January 12, 2012Inventors: Fumio Kato, Jun Nunome, Harunari Shimamura
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Publication number: 20110269003Abstract: A lithium primary battery 10 includes an electrode group in which a positive electrode 1 having iron disulfide as a positive electrode active material and a negative electrode 2 having lithium as a negative electrode active material are wound, with a separator 3 interposed between the positive electrode 1 and the negative electrode, wherein a density of the iron disulfide in a positive electrode mixture containing the positive electrode active material is in a range of 2.2-2.9 g/cm3, and the separator 3 is made of a non-woven fabric whose tensile strength is in a range of 6-30 N/mm2.Type: ApplicationFiled: November 10, 2010Publication date: November 3, 2011Inventors: Jun Nunome, Fumio Kato, Kenichi Morigaki, Shinichiro Tahara