25 Utility and 1 Design Patents
#1,348 in Osaka
#25,553 in Japan
#116,864 in the World
rank by utility patentsForward Citations = 240
Company Filing History:



4. 3 out of 27,375

5. 2 out of 26
Sumitomo Special Metal Co. Ltd.
where one patent can have more than one assignee
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