38 Utility Patents
#49 in Itami
#13,170 in Japan
#62,770 in the World
Forward Citations = 642
Company Filing History:

Sumitomo Electric Hardmetal Corp.

4. 3 out of 12
Osaka Municipal Technical Research Institute
5. 2 out of 832,680 patents
Other
where one patent can have more than one assignee
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