YK

Yasumi Katayama

SC Sumitomo Chemical: 1 patents #2,469 of 4,033Top 65%
📍 Niihama, JP: #299 of 473 inventorsTop 65%
Overall (All Time): #3,720,161 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5648543 Process for producing 4-Nitrosodiphenylamines or their salts Tetsuo Murata, Hiroyuki Takagi 1997-07-15