Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7465387 | Coal tar and hydrocarbon mixture pitch and the preparation and use thereof | Thomas A. Golubic, Kenneth C. Krupinski, David R. Snyder, Robert H. Wombles | 2008-12-16 |
| 7066997 | Coal tar and hydrocarbon mixture pitch and the preparation and use thereof | Thomas A. Golubic, Kenneth C. Krupinski, David R. Snyder, Robert H. Wombles | 2006-06-27 |
| 7033485 | Coal tar and hydrocarbon mixture pitch production using a high efficiency evaporative distillation process | E. Ronald McHenry | 2006-04-25 |
| 5746906 | Coal tar pitch blend having low polycyclic aromatic hydrocarbon content and method of making thereof | E. Ronald McHenry | 1998-05-05 |