HM

Hitoshi Masuda

DC Dowa Mining Co.: 1 patents #6 of 34Top 20%
Overall (2002): #206,033 of 266,432Top 80%
1
Patents 2002

Issued Patents 2002

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6475450 Method of leaching zinc concentrate Kaoru Saruta, Norihito Ishimori 2002-11-05