11 Utility Patents
#14,598 in Tokyo
#77,051 in Japan
#363,721 in the World
Forward Citations = 311
Company Filing History:
Sumitomo Osaka Cement Co., Ltd.

Sumitomo Cement Co., Ltd.
4. 1 out of 53
Freund Industrial Co., Ltd.
5. 1 out of 2,896

where one patent can have more than one assignee
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