65 Utility and 11 Design Patents
#1,024 in Tokyo
#4,379 in Japan
#22,933 in the World
rank by utility patentsForward Citations = 566
Company Filing History:



4. 8 out of 405
Showa Denko Kabushiki Kaisha
5. 5 out of 163,598

where one patent can have more than one assignee
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