111 Utility and 5 Design Patents
#2 in Miyagi
#1,158 in Japan
#7,715 in the World
rank by utility patentsForward Citations = 2,957
Company Filing History:






4. 3 out of 929
Sumitomo Metal Industries, Inc.
5. 2 out of 93
Tokyo Electron Limi Ted
where one patent can have more than one assignee
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