59 Utility Patents
#3 in Sanda
#5,544 in Japan
#28,175 in the World
Forward Citations = 354
Company Filing History:
Sumitomo Metal Industries, Inc.
Nippon Steel & Sumitomo Metal Corporation

4. 4 out of 98

5. 2 out of 832,492 patents
Other
where one patent can have more than one assignee
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