HS

Hiromi Sonta

DC Dowa Mining Co.: 1 patents #157 of 324Top 50%
📍 Akita, JP: #165 of 283 inventorsTop 60%
Overall (All Time): #3,904,447 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4931262 Method of treating H.sub.2 S containing gases Toshikazu Shiratori 1990-06-05