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Alkaline battery
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Patent number 5,721,072
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Issue date Feb 24, 1998
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Matsushita Electric Industrial Co., Ltd.
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Yuji Mototani
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H01 - BASIC ELECTRIC ELEMENTS
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Alkaline manganese battery
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Patent number 5,482,798
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Issue date Jan 9, 1996
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Matsushita Electric Industrial Co., Ltd.
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Yuji Mototani
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H01 - BASIC ELECTRIC ELEMENTS
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Alkaline cell with gelled anode
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Patent number 4,963,447
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Issue date Oct 16, 1990
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Matsushita Electric Industrial Co., Ltd.
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Joji Nishimura
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H01 - BASIC ELECTRIC ELEMENTS
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Cylindrical alkaline batteries
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Patent number 4,869,978
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Issue date Sep 26, 1989
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Matsushita Electric Industrial, Co., Ltd.
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Isao Kubo
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL