32 Utility Patents
#932 in Osaka
#17,728 in Japan
#83,047 in the World
Forward Citations = 282
Company Filing History:
Sumitomo Chemical Company, Limited
Sumitomo Pharmaceuticals Company Limited
Other
4. 1 out of 191
Seikagaku Corporation
5. 1 out of 1
Masahiko Yamamoto
where one patent can have more than one assignee
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