79 Utility Patents
#1 in Katsuta
#2,791 in Japan
#15,589 in the World
Forward Citations = 717
Company Filing History:

Aida Engineering Co., Ltd.
Hitachi Automotive Engineering Co., Ltd.
4. 2 out of 6
M.h. Center Limited
5. 2 out of 149
Hitachi Powdered Metals Co., Ltd.
where one patent can have more than one assignee
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