Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6398270 | Corrugated pipe joint | Kouki Fukui, Yasuhiro Kikumori | 2002-06-04 |
| 6347646 | Flexible hose | Kouki Fukui | 2002-02-19 |
| 6340181 | Bellmouth with joint block body with the bellmouth and hand hole with the bellmouth | — | 2002-01-22 |
| 6338507 | Synthetic resin pipe with joint | — | 2002-01-15 |