5 Utility Patents
#29,051 in Tokyo
#162,692 in Japan
#828,843 in the World
Forward Citations = 100
Company Filing History:

Rikagaku Kenkyusho

4. 1 out of 1
Rikagaku Kenkyusho and Mitsubishi Petrochemical Company Limited
5. 1 out of 2
Riken Vitamin Oil Co., Ltd.
where one patent can have more than one assignee
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