Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8973953 | Seal between pipe sections | Katsuo Ueno | 2015-03-10 |
| 8840151 | Seal between pipe sections | Katsuo Ueno | 2014-09-23 |
| 7614667 | Pipe connection | — | 2009-11-10 |
| 6595557 | Screw-threaded pipe joint | — | 2003-07-22 |