83 Utility and 1 Design Patents
#15 in Hitachi
#2,464 in Japan
#14,052 in the World
rank by utility patentsForward Citations = 2,046
Company Filing History:

Hitachi Industrial Equipment Systems Co., Ltd.
Hitachi Powdered Metals Co., Ltd.
4. 6 out of 151
Japan Servo Co.,ltd.
5. 5 out of 2,333

where one patent can have more than one assignee
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