Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D823444 | Flexible pipe joint | Shigeyoshi Hayashi | 2018-07-17 |
| 9541209 | Structure of check valve | Shigeyoshi Hayashi | 2017-01-10 |
| 7128095 | Vibration damping coupling | — | 2006-10-31 |
| 7111876 | Flange | Shigeyoshi Hayashi | 2006-09-26 |