Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6109660 | Connecting structure of externally resin-coated small-diameter metallic pipe | Masaaki Akiyama, Kazunori Takikawa, Kazumi Fukaya | 2000-08-29 |
| 6041827 | Multi-layered metallic pipe and method of coating the metallic pipe | Teruhisa Takahashi, Masaaki Akiyama | 2000-03-28 |
| 4853297 | Multilayer coated corrosion resistant metal pipe | Teruhisa Takahashi | 1989-08-01 |