Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5711612 | Dynamic pressure bearing | Masao Itoh, Toyotsugu Itoh | 1998-01-27 |
| 5538347 | Dynamic pressure bearing | Masao Itoh, Yuko Takahashi, Toyotsugu Itoh | 1996-07-23 |
| 5463503 | Method for producing a polygon mirror | Sunao Kawada, Masataka Inagi, Toyotsugu Itoh, Takayoshi Hashimoto | 1995-10-31 |
| 4696452 | Trip throttle valve | Teiji Miyagawa, Masao Hayakawa | 1987-09-29 |