12 Utility Patents
#4,159 in Yokohama
#69,852 in Japan
#327,802 in the World
Forward Citations = 115
Company Filing History:
Showa Highpolymer Co., Ltd.

Rengo Co., Ltd.
where one patent can have more than one assignee
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#4,159 in Yokohama
#69,852 in Japan
#327,802 in the World
Company Filing History:

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