34 Utility Patents
#3,457 in Tokyo
#15,968 in Japan
#75,040 in the World
Forward Citations = 151
Company Filing History:
Sumitomo Metal Industries, Inc.


4. 5 out of 1,098
Nippon Steel & Sumitomo Metal Corporation
5. 4 out of 52,633

where one patent can have more than one assignee
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