HN

Hiroyuki Niijima

DI Daicel Chemical Industries: 1 patents #476 of 893Top 55%
📍 Himeji, JP: #968 of 1,500 inventorsTop 65%
Overall (All Time): #3,810,539 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5362365 Purification of acetic anhydride or acetic anhydride and acetic acid using ozone Kazuyuki Akita 1994-11-08