13 Utility Patents
#65 in Tama
#63,483 in Japan
#297,277 in the World
Forward Citations = 66
Company Filing History:
Nippon Steel & Sumitomo Metal Corporation
Sumitomo Pipe & Tube Co., Ltd.
Sumitomo Metal Industries, Inc.
4. 2 out of 1,100
Kabushiki Kaisha Yaskawa Denki
5. 2 out of 7

where one patent can have more than one assignee
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