Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5889749 | Optical pickup apparatus | Toshiaki Katsuma, Takayuki Saito | 1999-03-30 |
| 5530496 | Overhead projector | Shigeo Mizukawa, Masaaki Morizumi | 1996-06-25 |
| 4431608 | Gas purification system | Kiyotaka Shimazu | 1984-02-14 |
| 4375450 | Gas purification system | Kiyotaka Shimazu | 1983-03-01 |