Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6111159 | Hydrocarbon conversion process | George A. Huff, Jr., Robert L. Mehlberg, David B. Johnson | 2000-08-29 |
| 6025534 | Olefin polymerization process | David B. Johnson, George A. Huff, Jr., Robert L. Mehlberg | 2000-02-15 |
| 5932778 | Shutdown process for olefin polymerization reactor | David B. Johnson, George A. Huff, Jr. | 1999-08-03 |