Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D307470 | Electric fan | Toshiyuki Utsuki, Kenichi Watanabe | 1990-04-24 |
| D291486 | Electric fan | Hideki Sakae, Kazunori Yanagisawa, Yasuo Tsumurai | 1987-08-18 |
| D291352 | Electric fan | Toshiyuki Utsuki, Hideki Sakae, Kenichi Watanabe | 1987-08-11 |
| D290997 | Electric fan | Toshiyuki Utsuki, Kazunori Yanagisawa, Yasuo Tsumurai | 1987-07-21 |
| D290872 | Electric fan | Toshiyuki Utsuki, Hideki Sakae, Kenichi Watanabe | 1987-07-14 |
| D276550 | Electric fan | Katsuhiko Nishiwaki, Kenichi Watanabe | 1984-11-27 |