Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8545656 | Method of manufacturing resin pipe | Yoji Arakawa, Yasunori Sugihara, Munehito Kawakami, Hiroyuki Nakamura | 2013-10-01 |
| 8215341 | Resin pipe with mouthpiece and method of manufacturing the same | Yoji Arakawa, Yasunori Sugihara, Munehito Kawakami, Hiroyuki Nakamura | 2012-07-10 |