Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE42174 | Filter with efficiently sealed end | Larry T. Gunderson, Gregory J. Schoenmann, Kelly R. Schmitz | 2011-03-01 |
| RE41713 | Filter with efficiently sealed end | Larry T. Gunderson, Gregory J. Schoenmann, Kelly R. Schmitz | 2010-09-21 |
| 7070641 | Carbon media filter element | Larry T. Gunderson, Eric Schroeder, Mark C. Schroeder, Eric A. Janikowski | 2006-07-04 |
| 6902598 | Filter with efficiently sealed end | Larry T. Gunderson, Gregory J. Schoenmann, Kelly R. Schmitz | 2005-06-07 |
| 6887343 | Filter coating, winding, finishing and manufacturing system | Murray R. Schukar, Brian K. Fillbach, Gary J. Frank, Craig A. Clayton, Douglas P. Marquis +9 more | 2005-05-03 |