Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6186128 | Apparatus for treatment of crankcase emissions materials in a positive crankcase ventilation system | Charles T. Nachtman, James R. Edwards, Robert L. Gregory, Frank Winter | 2001-02-13 |
| 6000383 | Apparatus for the treatment of crankcase emissions materials in a positive crankcase ventilation system | Charles T. Nachtman, James R. Edwards, Robert L. Gregory | 1999-12-14 |