Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5928954 | Tagging hydrocarbons for subsequent identification | Michael J. Rutledge, Robert T. Roginski | 1999-07-27 |
| 5843783 | Tagging hydrocarbons for subsequent identification | Michael J. Rutledge, Robert T. Roginski | 1998-12-01 |
| 5723338 | Tagging hydrocarbons for subsequent identification | Michael J. Rutledge, Robert T. Roginski | 1998-03-03 |
| 5710046 | Tagging hydrocarbons for subsequent identification | Michael J. Rutledge, Robert T. Roginski | 1998-01-20 |