13 Utility Patents
#1,027 in Saitama 343-0827
#60,151 in Japan
#273,557 in the World
Forward Citations = 51
Company Filing History:
Tonen Corporation
Toray Battery Separator Film Co., Ltd.
Tonen Chemical Corporation
4. 1 out of 93
5. 1 out of 1,415
where one patent can have more than one assignee
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