Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9101856 | Purge exhaust processor | Leonard A. Quinn, William P. Fornof, Fred W. Hoffman, Richard J. Conklin | 2015-08-11 |
| 8707862 | Cooking apparatus and method | William H. Oliver | 2014-04-29 |
| 8114199 | Sweep air system for membrane air dryer | — | 2012-02-14 |
| 8066801 | Sweep air system for membrane air dryer | — | 2011-11-29 |
| 7819958 | Purge valve | Fred W. Hoffman, Leonard A. Quinn | 2010-10-26 |
| 7789925 | Purge exhaust processor | William P. Fornof, Fred W. Hoffman, Leonard A. Quinn | 2010-09-07 |
| 7753069 | Drain valve | Fred W. Hoffman, Leonard A. Quinn | 2010-07-13 |
| 7731784 | Membrane air dryer with sweep air control | Eric C. Wright, Richard Kohar | 2010-06-08 |
| 7708793 | Purge exhaust processor | William P. Fornof, Fred W. Hoffman, Leonard A. Quinn | 2010-05-04 |
| 7678177 | Membrane air dryer and sweep valve | — | 2010-03-16 |
| 7637985 | Dry compressed air supply module | Fred W. Hoffman | 2009-12-29 |
| 6923845 | Membrane air dryer for vehicle air brake system | Richard Jacobs | 2005-08-02 |
| 6881245 | Membrane air dryer and method of mounting a membrane dryer to a vehicle | Fred W. Hoffman, Leonard A. Quinn | 2005-04-19 |
| 6764529 | Membrane gas dehydrating apparatus for gas controlled and powered systems | Jeff Malarik | 2004-07-20 |
| 6730143 | Truck air dryer purge air cleaner | Jeff Malarik | 2004-05-04 |
| 6563575 | Optical sensing system for detecting welds and defects in metal | Kenneth W. Maydew | 2003-05-13 |
| 6083297 | Gas dehydration membrane with low oxygen and nitrogen permeability | Ronald J. Valus, James Davis | 2000-07-04 |
| 5853884 | Method for producing unsupported fiber bundles for HME and other filtration applications | James Davis | 1998-12-29 |
| 5174900 | Apparatus for separation and for treatment of fluid feedstreams, wafers for use therein and related methods | James C. Davis, Robert D. Littler | 1992-12-29 |
| 5164081 | Apparatus for separation and for treatment of fluid feedstreams, wafers for use therein and related methods | James C. Davis, Robert D. Littler | 1992-11-17 |
| 5100556 | Transverse sheet membrane separation module, components thereof and related methods | — | 1992-03-31 |
| 5000855 | Transverse sheet membrane separation module, components thereof and related methods | — | 1991-03-19 |
| 4959152 | Hollow fiber separation module and method for the use thereof | — | 1990-09-25 |