42 Utility Patents
#2,445 in Tokyo
#10,959 in Japan
#52,629 in the World
Forward Citations = 61
Company Filing History:

Hitachi Chemical Company, Ltd.
Hitachi Powdered Metals Co., Ltd.
4. 2 out of 2,028

5. 1 out of 2,874

where one patent can have more than one assignee
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