92 Utility Patents
#452 in Tokyo
#1,922 in Japan
#11,481 in the World
Forward Citations = 160
Company Filing History:
Nippon Steel Corporation
Nippon Steel & Sumitomo Metal Corporation
Sumitomo Metal Industries, Inc.
4. 4 out of 153
Toyoda Iron Works Co., Ltd.
5. 1 out of 4,216

where one patent can have more than one assignee
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