Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6905286 | Porous pipe and apparatus and method of producing the same | Hiroyuki Masui, Syoji Hirao, Akihiro Fujii, Keiji Nakamata | 2005-06-14 |
| 6659510 | Pipe-end-connecting joint | Hiroshi Ikegami, Yasuhiro Kikumori, Toshihiro Nakanishi, Susumu Okairi, Nobuo Shindo | 2003-12-09 |