Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4597171 | Tube-enlarging press for use in heat exchanger fabrication | Yukio Kitayama, Izumi Ochiai, Yoshio Nozawa, Masahiro Miyagi, Katsuharu Uehara | 1986-07-01 |
| 4583675 | Method of production of a part formed with an opening | Izumi Ochiai, Katuo Matui | 1986-04-22 |