13 Utility Patents
#24 in Omiya
#63,450 in Japan
#297,024 in the World
Forward Citations = 216
Company Filing History:
Toa Nenryo Kogyo Kabushiki Kaisha
Toa Nenryo Kogyo, K. K.
Petroleum Energy Center
4. 1 out of 141
Tonen Corporation
where one patent can have more than one assignee
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