Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6394281 | Ceramic filter element | Marcus A. Ritland, Dennis W. Readey, Richard N. Kleiner, Jack D. Sibold, Steven Landin +1 more | 2002-05-28 |
| 6247221 | Method for sealing and/or joining an end of a ceramic filter | Marcus A. Ritland, Dennis W. Readey, Richard N. Kleiner, Jack D. Sibold, Steven Landin +1 more | 2001-06-19 |