Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5328596 | Lubricating oil refining process | — | 1994-07-12 |
| 5096673 | Natural gas treating system including mercury trap | Tsoung Y. Yan | 1992-03-17 |
| 4982050 | Natural gas treating system including mercury trap | Tsoung Y. Yan | 1991-01-01 |