12 Utility Patents
#320 in Hiroshima, 729-3431
#69,780 in Japan
#327,272 in the World
Forward Citations = 33
Company Filing History:



4. 2 out of 929
Sumitomo Metal Industries, Inc.
5. 1 out of 17
Mitsubishi-hitachi Metals Machinery, Inc.
where one patent can have more than one assignee
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