Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5328035 | Lithium metatungstate | Willem P. C. Duyvesteyn, Houyuan Liu, Purusotam L. Shrestha | 1994-07-12 |
| 5178848 | Lithium metatungstate | Willem P. C. Duyvesteyn, Houyuan Liu, Purusotam L. Shrestha | 1993-01-12 |