Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4400604 | Heat treating method and apparatus using microwave | Katsuyuki Ohtsuka, Daisaku Hayashi | 1983-08-23 |
| 4338102 | Device for removing radioactive particles in moist gas | Katsuyuki Otsuka | 1982-07-06 |