Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879973 | Automatic tube circumference scanning apparatus | Takuzo Maeyama, Kenichi Nii, Shigeru Shimojo, Masaaki Torichigai, Kiyoshi Koizumi | 1989-11-14 |
| 4872347 | Automated ultrasonic examination system for heat transfer tubes in a boiler | Yoshimi Okabe, Masaaki Torichigai, Shozo Kaneko, Joji Ichinari, Kiyoshi Koizumi | 1989-10-10 |
| 4854614 | Cable insert nozzle | Masaaki Torichigai | 1989-08-08 |
| 4800927 | Cable insertion nozzle | Masaaki Torichigai | 1989-01-31 |