Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5647612 | Coupling for pipes | Satohisa Yoshida, Akihito Namikawa, Masayoshi Enomoto | 1997-07-15 |
| 5625948 | Method for producing a pipe and apparatus for the same | Yoshitaka Kuroda, Makoto Ito, Nobuyuki Morikawa, Ryoiti Izumi | 1997-05-06 |