Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8720465 | Device for work implementation without stopping flow, and method for work implementation without stopping flow | Toshiyuki Sato | 2014-05-13 |
| 8402992 | Branching unit for boring without stopping passage of fluid | Tamotsu Yamashita | 2013-03-26 |
| 8156959 | Branching unit for boring without stopping passage of fluid | Tamotsu Yamashita | 2012-04-17 |
| 8118331 | Non-bolt joint structure and method for producing non-bolt joint structure | Tamotsu Yamashita | 2012-02-21 |