22 Utility Patents
#1,700 in Osaka
#31,879 in Japan
#147,706 in the World
Forward Citations = 417
Company Filing History:

Sumitomo Chemical Company, Limited
Hosokawa Seisakusho Co., Ltd.
4. 2 out of 2
Kabushiki Kaisha Hosokawaseisakusho
5. 1 out of 1
Hosokawa Seisakushi Company, Ltd.
where one patent can have more than one assignee
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