54 Utility Patents
#4 in Ryugasaki
#6,534 in Japan
#32,866 in the World
Forward Citations = 1,764
Company Filing History:


Hitachi Plant Technologies, Ltd.
4. 1 out of 7
Hitachi Air Conditioning Systems Co., Ltd.
5. 1 out of 1,112
Hitachi Maxell, Limited
where one patent can have more than one assignee
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