87 Utility and 4 Design Patents
#518 in Tokyo
#2,182 in Japan
#12,773 in the World
rank by utility patentsForward Citations = 548
Company Filing History:



4. 2 out of 18
Sk Materials Jnc Co., Ltd.
5. 2 out of 170
Nec C Orporation
where one patent can have more than one assignee
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