Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5607575 | Process for removing iron impurities from petroleum oil distillation residues | Kozo Kamiya, Yuichiro Fujiyama, Masaru Ushio | 1997-03-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5607575 | Process for removing iron impurities from petroleum oil distillation residues | Kozo Kamiya, Yuichiro Fujiyama, Masaru Ushio | 1997-03-04 |