HY

Hiroyasu Yokoyama

NC Nkk Co.: 1 patents #25 of 133Top 20%
Overall (2002): #204,051 of 266,432Top 80%
1
Patents 2002

Issued Patents 2002

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6375763 Pearlitic steel railroad rail Shinji Mitao 2002-04-23