Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5227352 | Catalyst composition for catalytic cracking of hydrocarbon oil and process for producing the same | Mitsugu Tsujii, Nobuki Sekine, Yoshihiro Mizutani, Mitsuru Ohi, Seiichi Harima +1 more | 1993-07-13 |
| 4376528 | Steel pipe hardening apparatus | Toshio Ohshimatani, Kengo Nozawa, Tatsuo Maguchi, Keiichiro Takitani | 1983-03-15 |