Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855106 | Low alloy steels for use in pressure vessel | Masaaki Katsumata, Isamu Takagi, Eiji Takahashi, Tadamichi Sakai, Hideaki Ohtsu +2 more | 1989-08-08 |
| 4412453 | Method for detecting brazing defects in plate-fin type heat exchangers | Nobuyuki Nagai, Eiji Takahashi, Hideaki Ohtsu | 1983-11-01 |