18 Utility Patents
#7,622 in Tokyo
#39,794 in Japan
#179,398 in the World
Forward Citations = 307
Company Filing History:
Showa Shell Sekiyu K.k.
4. 1 out of 828,785 patents
Other
5. 1 out of 4,268
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#7,622 in Tokyo
#39,794 in Japan
#179,398 in the World
Company Filing History:
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