Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7028983 | Coupling member of a pipe coupling and valve body used in a coupling member | Kazutami Ishiwata | 2006-04-18 |
| 6655498 | Pipe coupling and drain plug for engine oil change | Takeya Sasa | 2003-12-02 |
| 5423515 | Socket of pipe joint | — | 1995-06-13 |
| 5144979 | Tube coupler and a valve for a tube coupler | Masaru Shobuzako | 1992-09-08 |