Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5685900 | Method for beneficiating discolored kaolin to produce high brightness coating clay | Jun Yuan, Windell R. Andrews | 1997-11-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5685900 | Method for beneficiating discolored kaolin to produce high brightness coating clay | Jun Yuan, Windell R. Andrews | 1997-11-11 |