15 Utility Patents
#10,242 in Tokyo
#53,086 in Japan
#246,625 in the World
Forward Citations = 281
Company Filing History:

Sumitomo Osaka Cement Co., Ltd.
Sumitomo Cement Co., Ltd.
4. 3 out of 336

5. 3 out of 3
Astrodesign, Inc.
where one patent can have more than one assignee
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