HK

Hirotsugu Kuwayama

IC Idemitsu Kosan Co.: 1 patents #699 of 1,237Top 60%
MW Meisei Chemical Works: 1 patents #2 of 19Top 15%
Overall (All Time): #4,051,297 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4382111 Method of treating fiber Hiroshi Ichikawa 1983-05-03