YH

Youichirou Hamada

SC Sumitomo Metal Mining Co.: 2 patents #253 of 736Top 35%
Overall (All Time): #2,134,172 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
7521295 Leadframe and method of manufacturing the same Ichinori Iitani 2009-04-21
7235868 Lead frame and its manufacturing method Ichi Iitani 2007-06-26