Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9101856 | Purge exhaust processor | Leonard A. Quinn, Randall W. Nichols, Fred W. Hoffman, Richard J. Conklin | 2015-08-11 |
| 8557030 | Air dryer assembly | Leonard A. Quinn | 2013-10-15 |
| 7789925 | Purge exhaust processor | Fred W. Hoffman, Leonard A. Quinn, Randall W. Nichols | 2010-09-07 |
| 7789950 | Air dryer with oil removal filter | Fred W. Hoffman, Leonard A. Quinn | 2010-09-07 |
| 7708793 | Purge exhaust processor | Fred W. Hoffman, Leonard A. Quinn, Randall W. Nichols | 2010-05-04 |
| 7608132 | Vehicle air system and method with forced purging | Paul Reisinger | 2009-10-27 |
| 7544234 | Vehicle air system having an indicator device and method | — | 2009-06-09 |
| 7484480 | Apparatus and method for removing crankcase gases | Paul Reisinger | 2009-02-03 |
| 7434571 | Closed crankcase ventilation system | D. Craig Young, Anthony Cazzato, Paul Reisinger, Michael E. Moncelle | 2008-10-14 |
| 7320316 | Closed crankcase ventilation system | D. Craig Young, Anthony Cazzato, Paul Reisinger, Michael E. Moncelle | 2008-01-22 |
| 7305838 | Cooling compressor intake air | — | 2007-12-11 |
| 7285149 | Oil separator for vehicle air system | Gregory R. Ashley, Leonard A. Quinn, Fred W. Hoffman, Gregory C. Smith | 2007-10-23 |
| 7008472 | Spin-on filtering oil removal cartridge | Gregory R. Ashley, Leonard A. Quinn | 2006-03-07 |
| 6951581 | Spin-on desiccant cartridge with integral oil removal filter | James P. Koenig, Leonard A. Quinn | 2005-10-04 |
| 6883321 | Filter assembly for exhaust gases | — | 2005-04-26 |
| 6786953 | Spin-on desiccant cartridge with integral oil removal filter | James P. Koenig, Leonard A. Quinn | 2004-09-07 |
| 6527839 | Spin-on filtering oil removal cartridge | James P. Koenig | 2003-03-04 |
| 6514051 | Oil filter used in combination with a heat generating element | James P. Koenig | 2003-02-04 |
| 6358300 | Lithium chloride desiccant for trailer air dryer and pressure swing dehydration | Richard J. Conklin | 2002-03-19 |
| 6319296 | Air system bypass for oil separator | — | 2001-11-20 |