Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D471261 | Socket of pipe coupling | — | 2003-03-04 |
| D471262 | Plug of pipe coupling | — | 2003-03-04 |
| D463537 | Plug of pipe coupling | Tomoko Someya | 2002-09-24 |
| D462112 | Socket of pipe coupling | Tomoko Someya | 2002-08-27 |