IA

Isamu Amatsu

DC Dowa Mining Co.: 2 patents #92 of 324Top 30%
📍 Hamura, JP: #146 of 277 inventorsTop 55%
Overall (All Time): #2,301,465 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5205878 Copper-based electric and electronic parts having high strength and high electric conductivity Toshihiro Kanzaki, Akira Sugawara, Kouichi Hatakeyama 1993-04-27
5147469 Process for producing copper-based alloys having high strength and high electric conductivity Toshihiro Kanzaki, Akira Sugawara, Kouichi Hatakeyama 1992-09-15