Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4458723 | Heat insulating pipe | Akio Nojiri, Toshio Koreeda | 1984-07-10 |
| 4397797 | Method for extrusion coating of a pipe with a foamed cover layer having three integrally formed cellular sub-layers | Akio Nojiri, Toshio Koreeda | 1983-08-09 |