36 Utility and 1 Design Patents
#3,200 in Tokyo
#14,540 in Japan
#68,583 in the World
rank by utility patentsForward Citations = 489
Company Filing History:

Nippon Steel Corporation
Nippon Steel & Sumikin Materials Co., Ltd.
4. 3 out of 42,480

5. 2 out of 52,701

where one patent can have more than one assignee
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