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Narashino, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Frequency converter
Patent number
7,272,004
Issue date
Sep 18, 2007
Hitachi Industrial Equipment Systems Co. Ltd.
Masayuki Hirota
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Frequency converter
Patent number
7,054,157
Issue date
May 30, 2006
Hitachi Industrial Equipment Systems Co., Ltd.
Masayuki Hirota
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Patents Applications
last 30 patents
Information
Patent Application
Frequency Converter
Publication number
20080212279
Publication date
Sep 4, 2008
Masayuki Hirota
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
Frequency converter
Publication number
20060181847
Publication date
Aug 17, 2006
Masayuki Hirota
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
Frequency converter
Publication number
20050030715
Publication date
Feb 10, 2005
Masayuki Hirota
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR