IM

Isao Matsumoto

Pioneer Electronic: 1 patents #88 of 240Top 40%
Sumitomo Electric Industries: 1 patents #327 of 1,127Top 30%
Overall (1989): #25,165 of 140,708Top 20%
2
Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4837119 Sealed storage battery and method for making its electrode Munehisa Ikoma, Hiroshi Kawano, Nobuyuki Yanagihara 1989-06-06
4823056 Pulse-width modulation drive circuit Yoshihiko Watanabe, Tsuneyoshi Nagashita, Susumi Niinuma, Isamu Nomura, Kimito Kobayashi +7 more 1989-04-18