Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |