36 Utility Patents
#2,999 in Tokyo
#13,979 in Japan
#64,837 in the World
Forward Citations = 932
Company Filing History:
Hitachi, Ltd.


4. 2 out of 7
Hitachi Kenki Fine Tech Co., Ltd.
5. 1 out of 830,757 patents
Other
where one patent can have more than one assignee
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