Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879973 | Automatic tube circumference scanning apparatus | Takuzo Maeyama, Kenichi Nii, Shigeru Shimojo, Keiichi Iwamoto, Masaaki Torichigai | 1989-11-14 |
| 4872347 | Automated ultrasonic examination system for heat transfer tubes in a boiler | Yoshimi Okabe, Keiichi Iwamoto, Masaaki Torichigai, Shozo Kaneko, Joji Ichinari | 1989-10-10 |