II

Ikuko Ihara

HC Hodogaya Chemical Co.: 2 patents #141 of 359Top 40%
Sumitomo Electric Industries: 2 patents #9,741 of 21,551Top 50%
📍 Ibaraki, JP: #3,280 of 6,779 inventorsTop 50%
Overall (All Time): #2,256,539 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5707747 Amine compound and electro-luminescence device comprising same Hiromitsu Tomiyama, Masahiko Oshino, Naoko Nakanishi, Mutsumi Suzuki, Masao Fukuyama +2 more 1998-01-13
5639914 Tetraaryl benzidines Hiromitsu Tomiyama, Masahiko Oshino, Naoko Nakanishi 1997-06-17