33 Utility Patents
#3,653 in Tokyo
#16,915 in Japan
#79,290 in the World
Forward Citations = 246
Company Filing History:


Nippon Steel Corporation
4. 4 out of 4,224

5. 3 out of 1,098
Nippon Steel & Sumitomo Metal Corporation
where one patent can have more than one assignee
Get your Inventor Badge Today