YI

Yosio Isii

KK Kureha Kagaku Kogyo: 1 patents #332 of 607Top 55%
SI Sumitomo Metal Industries: 1 patents #630 of 1,462Top 45%
Overall (All Time): #4,044,114 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4482452 Process for preparing raw material for producing carbon material Masatomo Shigeta, Akio Hoshi 1984-11-13