Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6039680 | Tool changing mechanism | Tetsuya Oketani | 2000-03-21 |
| 5893687 | Plate suppressing device for drilling apparatus | Tetsuya Oketani | 1999-04-13 |
| 5035742 | Reduced chromium-ore bearing powder and method for producing the same | Tsutomu Minagawa, Sadahiro Saito | 1991-07-30 |
| 4978294 | External heating rotary furnace | Shirou Hayashi | 1990-12-18 |