Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5849375 | Candle filter | Robert Smith, Joseph H. Eaton, Edward M. Fischer, Venecia M. Grobelny, Kevin D. McVicker | 1998-12-15 |
| 5780126 | Filter material | Robert Smith, Joseph H. Eaton, Edward M. Fischer, Venecia M. Grobelny, Kevin D. McVicker | 1998-07-14 |