Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5280506 | Steam isolation valve | Katsumi Yamada, Hiroshi Miyano, Noboru Saito, Tetsuzo Yamamoto, Hideaki Takahashi +1 more | 1994-01-18 |
| D317780 | Multi-function programmable electronic calculator | — | 1991-06-25 |