KO

Kazuo Ookawa

HI Hitachi: 1 patents #17,742 of 28,497Top 65%
Overall (All Time): #3,542,444 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6378661 Elevator control system having an immersion proof structure Noboru Arabori, Tadashi Ariki, Sanho Gon, Hiroki Shinozuka, Tomofumi Hagiya 2002-04-30