Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6858132 | Hydrofining catalyst and hydrofining process | Hiroki Koyama, Kenji Nakamura, Naoharu Igarashi, Masayuki Mori, Takayuki Tsukada | 2005-02-22 |
| 6780817 | Catalyst for hydrofining and method for preparation thereof | Hiroki Koyama, Toru Saito | 2004-08-24 |