15 Utility and 1 Design Patents
#10,081 in Tokyo
#52,693 in Japan
#244,391 in the World
rank by utility patentsForward Citations = 84
Company Filing History:
Hitachi Plant Engineering & Construction Co., Ltd.

Hitachi Plant Technologies, Ltd.
4. 2 out of 831,952 patents
Other
5. 1 out of 3,437

where one patent can have more than one assignee
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