10 Utility Patents
#16,113 in Tokyo
#85,603 in Japan
#407,791 in the World
Forward Citations = 35
Company Filing History:
Sumitomo Osaka Cement Co., Ltd.

where one patent can have more than one assignee
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#16,113 in Tokyo
#85,603 in Japan
#407,791 in the World
Company Filing History:

Get your Inventor Badge Today