Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6659510 | Pipe-end-connecting joint | Hiroshi Ikegami, Yasuhiro Kikumori, Toshihiro Nakanishi, Nobuo Shindo, Tatsuya Machino | 2003-12-09 |
| 6250339 | Sound-absorbing and heat-insulating duct | Hiroshi Ikegami | 2001-06-26 |