13 Utility Patents
#12,146 in Tokyo
#63,300 in Japan
#296,119 in the World
Forward Citations = 99
Company Filing History:
Showa Shell Sekiyu Kabushiki Kaisha
Showa Shell Sekiyu K.k.
Teikoku Chemical Industry Co., Ltd.
4. 1 out of 1
Showa Sheel Sekiyu Kabushiki Kaisha
where one patent can have more than one assignee
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