Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11946396 | Liquid filter arrangement for no-mess liquid change | Adam Sylvester, Matt Olund, Justin Brinkman | 2024-04-02 |
| 9273585 | System and method for regenerating an auxiliary power unit exhaust filter | John Hiemstra, Wenzhong Zhang, Allan T. Hovda, Gary Dale Reeves, Josh Kundert +4 more | 2016-03-01 |
| 8776502 | System and method for regenerating an auxiliary power unit exhaust filter | John Hiemstra, Wenzhong Zhang, Allan T. Hovda, Gary Dale Reeves, Josh Kundert +2 more | 2014-07-15 |
| 8061129 | System and method to regenerate a diesel particulate filter | Jill N. Irlbeck, Erich Albert Lucht, John Hiemstra, Allan T. Hovda, John J. Shaw +7 more | 2011-11-22 |
| 7556155 | Fluid filter and methods | David B. Harder, Philip Edward Johnson, Curt A. Rausch, John R. Hacker | 2009-07-07 |
| 7138008 | Filter assemblies and systems for intake air for fuel cells | William Nyman, Richard Canepa | 2006-11-21 |
| 6984465 | Seal-leak detector arrangement for compressors and other equipment | Richard Canepa | 2006-01-10 |
| 6951697 | Integrated systems for use with fuel cells, and methods | — | 2005-10-04 |
| 6797027 | Filter assemblies and systems for intake air for fuel cells | William Nyman, Richard Canepa | 2004-09-28 |
| 6783881 | Filter assembly for intake air of fuel cell | William Nyman, Richard Canepa | 2004-08-31 |
| 6752924 | Bowl-cartridge filter having interlock mechanism and methods | Michael J. Gustafson, Bernard A. Matthys | 2004-06-22 |
| D470216 | Filter element | Michael J. Gustafson, Bernard A. Matthys, Brent A. Gulsvig | 2003-02-11 |
| 6384369 | Liquid filter construction and methods | David B. Harder, John R. Hacker, Gerald D. Kiral, Ronald W. Streitmatter, Kevin K. Socha | 2002-05-07 |
| 6354398 | Mufflers for use with engine retarders; and methods | Theodore G. Angelo, John Edward Hamrin, John Hiemstra, Wayne M. Wagner, Ted J. Wiegandt | 2002-03-12 |
| D442538 | Mounting arrangement for muffler | Wayne M. Wagner, David E. Winnes | 2001-05-22 |
| D434360 | Mounting arrangement for muffler | Wayne M. Wagner, David E. Winnes | 2000-11-28 |
| 6148519 | Apparatus for installing a packing material in a muffler assembly; and methods thereof | Wayne M. Wagner, Daniel T. Risch | 2000-11-21 |
| 6082487 | Mufflers for use with engine retarders; and methods | Theodore G. Angelo, John Edward Hamrin, John Hiemstra, Wayne M. Wagner, Ted J. Wiegandt | 2000-07-04 |
| 5880413 | Assembly for mounting of a muffler; combination and method | Wayne M. Wagner, David E. Winnes | 1999-03-09 |