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Masaki Hirooka
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Ibaragi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Alkaline battery separator and process for producing the same
Patent number
RE41203
Issue date
Apr 6, 2010
Japan Vilene Company, Ltd.
Masanao Tanaka
429 - Chemistry: electrical current producing apparatus, product, and process
Information
Patent Grant
Alkaline battery separator and process for producing the same
Patent number
6,607,859
Issue date
Aug 19, 2003
Japan Vilene Company, Ltd.
Masanao Tanaka
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Grant
Alkaline battery separator and process for producing the same
Patent number
6,348,286
Issue date
Feb 19, 2002
Japan Vilene Co., Ltd.
Masanao Tanaka
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Battery separator and a battery
Patent number
5,290,645
Issue date
Mar 1, 1994
Japan Vilene Co., Ltd.
Masanao Tanaka
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Separator for an alkaline battery
Patent number
4,699,858
Issue date
Oct 13, 1987
Firma Carl Freudenberg
Etsurou Nakao
H01 - BASIC ELECTRIC ELEMENTS