Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4986898 | Method of removing mercury from hydrocarbon oils | Satoyuki Nisimura | 1991-01-22 |
| 4946582 | Method of removing mercury from hydrocarbon oils | Etsuko Kawashima | 1990-08-07 |