Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4347117 | Donor solvent coal liquefaction with bottoms recycle at elevated pressure | Richard F. Bauman, George H. Anderson, Ken Lee TRACHTE, Steve J. Hsia | 1982-08-31 |
| 4227989 | Liquefaction of calcium-containing subbituminous coals and coals of lower rank | Martin L. Gorbaty | 1980-10-14 |