15 Utility Patents
#2 in Muroran
#51,964 in Japan
#238,595 in the World
Forward Citations = 77
Company Filing History:
Nippon Steel Corporation
Other

4. 1 out of 72
Aoyama Seisakusho Co., Ltd.
5. 1 out of 1
Nippon Steel Corporation Muroran Works
where one patent can have more than one assignee
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