4 Utility Patents
#1,339 in Hitachi
#193,086 in Japan
Forward Citations = 90
Company Filing History:

Hitachi Engineering Co., Ltd.
Hitachi Service Engineering Co., Ltd.
where one patent can have more than one assignee
Get your Inventor Badge Today
#1,339 in Hitachi
#193,086 in Japan
Company Filing History:

Get your Inventor Badge Today