Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6638354 | Precipitated silicas, silica gels with and free of deposited carbon from caustic biomass ash solutions and processes | Douglas K. Stephens, Clyde W. Wellen, Jeffrey B. Smith | 2003-10-28 |