Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5779992 | Process for hydrotreating heavy oil and hydrotreating apparatus | — | 1998-07-14 |
| 5591325 | Process for hydrotreating heavy oil and hydrotreating apparatus | — | 1997-01-07 |
| 4925554 | Hydrotreating process for heavy hydrocarbon oils | Goro Sato, Katsuhiro Shirono, Yoshio Eto | 1990-05-15 |
| 4789654 | Hydrotreating catalysts | Tetsuji Hirano, Goro Sato, Teruo Migita, Yoshio Eto | 1988-12-06 |
| 4668649 | Modified zeolite | Shinichi Yoshida, Takemithu Yano, Jun Fuchikami | 1987-05-26 |
| 4613425 | Process for hydrotreating heavy hydrocarbon oils | Katsuhiro Shirono, Yuusaku Arima, Yoichi Nishimura, Shinichi Yoshida | 1986-09-23 |
| 4500645 | Hydrocracking catalyst composition and method of making same | Jun Fuchikami, Takashi Inoue, Hiroyuki Oba | 1985-02-19 |
| 4419275 | Method of hydrorefining catalyst manufacture | Shin Yoshida, Takemitu Yano | 1983-12-06 |