Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10980186 | Artificial lighting device and power supply method therefor | — | 2021-04-20 |
| 4824035 | Cage mill | Hidekazu Takahashi, Shunzo Shimai, Toshio Watanabe, Yasuji Otsuka | 1989-04-25 |
| 4580736 | Cage mill | Hidekazu Takahashi, Junya Yamano, Toshio Watanabe, Tomeyoshi Nakajo | 1986-04-08 |