15 Utility Patents
#10,270 in Tokyo
#53,140 in Japan
#247,062 in the World
Forward Citations = 119
Company Filing History:
Nippon Steel Corporation

Sakai Chemical Industry Co., Ltd.
4. 1 out of 98
Asahi Denka Kogyo Kabushiki Kaisha
5. 1 out of 65
Toagosei Chemical Industry, Co., Ltd.
where one patent can have more than one assignee
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