20 Utility Patents
#586 in Saitama 343-0827
#36,582 in Japan
#169,030 in the World
Forward Citations = 227
Company Filing History:
Toa Nenryo Kogyo Kabushiki Kaisha
Tonen Corporation
Petroleum Energy Center
4. 1 out of 506

5. 1 out of 1
Tao Nenryo Kogyo K.k.
where one patent can have more than one assignee
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