Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7182858 | Multiple barrier filter apparatus | Keith E. Brown, Paul Peterson, Stuart Park, Ron Kindel, John W. Miller +1 more | 2007-02-27 |
| 6878343 | Devices and housings for test sample preparation | Dean C. Delben, Daniel S. Vitkuske | 2005-04-12 |
| 5601711 | Selective separation filter device | Peter L. Graham, Jane Larson | 1997-02-11 |
| 5472606 | Self-supporting, pleated, spirally wound filter | William C. Steere | 1995-12-05 |
| 5403482 | Self-supporting, pleated, spirally wound filter and the corresponding process of making | William C. Steere | 1995-04-04 |
| 5308483 | Microporous filtration funnel assembly | Tod Borton | 1994-05-03 |