Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6248687 | Process for presulfurizing a desulfurization catalyst used in a hydrodesulfurization unit of petroleum refinery and presulfurization promoter | Hirokazu Itoh, Kazuaki Abe, Yoshihiro Arita, Kazuya Hata, Tetsushi Kawamura | 2001-06-19 |