65 Utility and 1 Design Patents
#22 in Hitachi
#4,379 in Japan
#22,933 in the World
rank by utility patentsForward Citations = 317
Company Filing History:

Hitachi Industrial Equipment Systems Co., Ltd.
Japan Servo Co.,ltd.
4. 9 out of 1,378

5. 8 out of 149
Hitachi Powdered Metals Co., Ltd.
where one patent can have more than one assignee
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