30 Utility Patents
#162 in Hitachi
#19,778 in Japan
#92,354 in the World
Forward Citations = 421
Company Filing History:


Hitachi Engineering Co., Ltd.
where one patent can have more than one assignee
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#162 in Hitachi
#19,778 in Japan
#92,354 in the World
Company Filing History:


Get your Inventor Badge Today