Issued Patents All Time
Showing 1–25 of 69 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11318408 | Air cleaner arrangements; serviceable filter elements; and, methods | Randall Allen Engelland, Thomas R. Olson, Jim C. Rothman, Richard Lawrence Suydam | 2022-05-03 |
| 10967320 | Pulse jet air cleaner systems; components; and, methods | Fred H. Wahlquist, Thomas R. Olson, Charles Jensen, Ervin Fuchs, Eugene Wilson +1 more | 2021-04-06 |
| 10589209 | Air cleaner arrangements; serviceable filter elements; and, methods | Randall Allen Engelland, Thomas R. Olson, Jim C. Rothman, Richard Lawrence Suydam | 2020-03-17 |
| 10512870 | Pulse jet air cleaner systems, components, and, methods | Fred H. Wahlquist, Thomas R. Olson, Charles Jensen, Ervin Fuchs, Eugene Wilson +1 more | 2019-12-24 |
| 10010825 | Air cleaner arrangements; serviceable filter elements; and, methods | Randall Allen Engelland, Thomas R. Olson, Jim C. Rothman, Richard Lawrence Suydam | 2018-07-03 |
| 9757673 | Pulse jet air cleaner systems, components, and, methods | Fred H. Wahlquist, Thomas R. Olson, Charles Jensen, Ervin Fuchs, Eugene Wilson +1 more | 2017-09-12 |
| 9217399 | Air cleaner arrangements; serviceable filter elements; and, methods | Randall Allen Engelland, Thomas R. Olson, Jim C. Rothman, Richard Lawrence Suydam | 2015-12-22 |
| 9108135 | Pulse jet air cleaner systems; components; and, methods | Fred H. Wahlquist, Thomas R. Olson, Charles Jensen, Ervin Fuchs, Eugene Wilson +1 more | 2015-08-18 |
| RE45588 | Air cleaner arrangements; serviceable filter elements; and, methods | Randall Allen Engelland, Thomas R. Olson, Jim C. Rothman, Richard Lawrence Suydam | 2015-06-30 |
| 8951321 | Pulse jet air cleaner components; features; assemblies; and, methods | Fred H. Wahlquist | 2015-02-10 |
| 8808417 | Air cleaner arrangements; serviceable filter elements; and, methods | Randall Allen Engelland, Thomas R. Olson, Jim C. Rothman, Richard Lawrence Suydam | 2014-08-19 |
| 8460442 | Fluted filter media | Wayne M. Wagner, Joseph C. Tokar, Daniel T. Risch, Jim C. Rothman, Fred H. Wahlquist +4 more | 2013-06-11 |
| 8444748 | Multistage air cleaner including pulse cleaning system | Stan M. Koehler, William J. Krisko, Thomas Miller, Winston E. Olson, Fred H. Wahlquist +2 more | 2013-05-21 |
| 8404021 | Pulse jet air cleaner system; components; and, methods | Fred H. Wahlquist, Thomas R. Olson, Charles Jensen, Ervin Fuchs, Eugene Wilson +1 more | 2013-03-26 |
| 8382876 | Air cleaner arrangement; serviceable filter cartridge; and, methods | Robert Widerski, Randall Allen Engelland, Thomas R. Olson, Richard Lawrence Suydam | 2013-02-26 |
| 8268053 | Fluted filter media | Wayne M. Wagner, Joseph C. Tokar, Daniel T. Risch, Jim C. Rothman, Fred H. Wahlquist +4 more | 2012-09-18 |
| 8262762 | Evacuation valve arrangements; pulse jet air cleaner systems using same; and, methods | Thomas R. Olson, Fred H. Wahlquist | 2012-09-11 |
| 8147582 | Air cleaner arrangements; serviceable filter elements; and, methods | Randall Allen Engelland, Thomas R. Olson, Jim C. Rothman, Richard Lawrence Suydam | 2012-04-03 |
| 8048188 | Air cleaner arrangements; serviceable filter cartridge; and, methods | Robert Widerski, Randall Allen Engelland, Thomas R. Olson, Richard Lawrence Suydam | 2011-11-01 |
| 7972405 | Air cleaner arrangements; serviceable filter elements; and, methods | Randall Allen Engelland, Thomas R. Olson, Jim C. Rothman, Richard Lawrence Suydam | 2011-07-05 |
| 7927396 | Evacuation value arrangements; pulse jet air cleaner systems using same; and, method | Thomas R. Olson, Fred H. Wahlquist | 2011-04-19 |
| 7682416 | Air cleaner arrangements; serviceable filter elements; and, methods | Randall Allen Engelland, Thomas R. Olson, Jim C. Rothman, Richard Lawrence Suydam | 2010-03-23 |
| 7351270 | Air cleaner arrangements; serviceable filter elements; and, methods | Randall Allen Engelland, Thomas R. Olson, Jim C. Rothman, Richard Lawrence Suydam | 2008-04-01 |
| 7329326 | Method of making a fluted filter media for air filter | Wayne M. Wagner, Joseph C. Tokar, Daniel T. Risch, Jim C. Rothman, Fred H. Wahlquist +4 more | 2008-02-12 |
| 7323029 | Air cleaner arrangements; serviceable filter elements; and, methods | Randall Allen Engelland, Thomas R. Olson, Jim C. Rothman, Richard Lawrence Suydam | 2008-01-29 |