Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6558484 | High strength screw | Tetsuo Shiraga, Katsuhiko Kikuchi | 2003-05-06 |
| 6386810 | High strength screw | — | 2002-05-14 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6558484 | High strength screw | Tetsuo Shiraga, Katsuhiko Kikuchi | 2003-05-06 |
| 6386810 | High strength screw | — | 2002-05-14 |