30 Utility Patents
#165 in Hyogo
#19,609 in Japan
#91,523 in the World
Forward Citations = 683
Company Filing History:
Sumitomo Special Metals Co., Ltd.

Sumitomo Metal Industries, Inc.
4. 1 out of 847

5. 1 out of 26
Sumitomo Special Metal Co. Ltd.
where one patent can have more than one assignee
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