TO

Toshiaki Okuyama

HI Hitachi: 2 patents #622 of 3,771Top 20%
Overall (2004): #36,900 of 270,089Top 15%
2
Patents 2004

Issued Patents 2004

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6741063 Inverter apparatus Keijiro Sakai, Kinya Nakatsu, Hiroyuki Tomita, Junji Kato, Teiichi Furukawa 2004-05-25
6704212 PWM inverter with long carrier wave insertion Teiichi Furukawa, Masahiro Hiraga, Hiroyuki Tomita, Seiji Ishida 2004-03-09