12 Utility and 1 Design Patents
#34 in Sanda
#69,780 in Japan
#327,270 in the World
rank by utility patentsForward Citations = 56
Company Filing History:
Nippon Steel & Sumitomo Metal Corporation
Fine Sinter Co., Ltd
Nippon Steel Corporation
4. 2 out of 65

5. 2 out of 929
Sumitomo Metal Industries, Inc.
where one patent can have more than one assignee
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