66 Utility and 1 Design Patents
#347 in Yokohama
#4,232 in Japan
#22,279 in the World
rank by utility patentsForward Citations = 306
Company Filing History:

Konoshima Chemical Co., Ltd.

4. 3 out of 174
Sumitomo Pharmaceuticals Company Limited
5. 2 out of 328
Sumitomo Electric Device Innovations, Inc.
where one patent can have more than one assignee
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