Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10023790 | Dust free proppant and method of making same | Feipeng Liu | 2018-07-17 |
| 5814143 | Zirconium modified synthetic alkali metal silicate pigment and method of making | Gary M. Freeman | 1998-09-29 |