12 Utility Patents
#3,639 in Osaka
#69,486 in Japan
#325,348 in the World
Forward Citations = 11
Company Filing History:
Sanko Kaihatsu Kagaku Kenkyusho
Kanzaki Paper Manufacturing Co., Ltd.
Sanko Co., Ltd.
4. 1 out of 1
Sanko Kaihatsu Kagaku Kenyusho
5. 1 out of 1
Sanko Haihatsu Kagaku Kenkyusho
where one patent can have more than one assignee
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