Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5961678 | Filter drainage layer attachment | Allan Thomas | 1999-10-05 |
| 5725621 | Filter end cap attachment | Allan Thomas | 1998-03-10 |
| 5591338 | Fluid filter | Stephen E. Larson | 1997-01-07 |
| 4915714 | Fiber bed element and process for removing small particles of liquids and solids from a gas stream | Richard Teague, Jeffrey L. Parks | 1990-04-10 |