MN

Masaomi Nakamura

SI Sumitomo Metal Industries: 3 patents #222 of 1,462Top 20%
Overall (All Time): #1,623,407 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6266987 Disk roll exchanging apparatus for vertical piercing mill and disk roll exchanging method Hisao Goto 2001-07-31
6253593 Piercer roll exchanging apparatus for vertical piercing mill and piercer roll exchanging method Hisao Goto 2001-07-03
6158262 Piercing mill and cannon exchange method Hisao Goto 2000-12-12