19 Utility Patents
#1,907 in Kawasaki
#39,252 in Japan
#181,495 in the World
Forward Citations = 80
Company Filing History:
Riken Technos Corporation
Riken Vinyl Industry Co., Ltd

4. 2 out of 36,401

5. 2 out of 47
Tonen Chemical Corporation
where one patent can have more than one assignee
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