Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6659510 | Pipe-end-connecting joint | Hiroshi Ikegami, Toshihiro Nakanishi, Susumu Okairi, Nobuo Shindo, Tatsuya Machino | 2003-12-09 |
| 6435567 | Coupling structure for tube | Yoshiyuki Koizumi | 2002-08-20 |
| 6398270 | Corrugated pipe joint | Kouki Fukui, Hiroyuki Amatsutsu | 2002-06-04 |
| 6209929 | Connector for mounting a spiral pipe onto a wall member | Hiroshi Ikegami, Noboru Someda, Yoshiaki Tatsuta, Toshifumi Fujiwara, Toshio Morimatsu | 2001-04-03 |
| 6076992 | Underdrain pipe | Kouki Fukui | 2000-06-20 |
| 5950369 | Connecting tubular body for handhole or manhole, block body for the tubular body, and handhole or handhole structure | Hiroyuki Amatsutsu | 1999-09-14 |
| 5832960 | Wire harness protector | Hiroyuki Amatsutsu | 1998-11-10 |