Issued Patents All Time
Showing 1–25 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8460442 | Fluted filter media | Wayne M. Wagner, Gary R. Gillingham, Daniel T. Risch, Jim C. Rothman, Fred H. Wahlquist +4 more | 2013-06-11 |
| 8268053 | Fluted filter media | Wayne M. Wagner, Gary R. Gillingham, Daniel T. Risch, Jim C. Rothman, Fred H. Wahlquist +4 more | 2012-09-18 |
| 7329326 | Method of making a fluted filter media for air filter | Wayne M. Wagner, Gary R. Gillingham, Daniel T. Risch, Jim C. Rothman, Fred H. Wahlquist +4 more | 2008-02-12 |
| 7252704 | Filter arrangement and methods | James A. LeBlanc | 2007-08-07 |
| 6994744 | Filter arrangement and methods | James A. LeBlanc | 2006-02-07 |
| 6960245 | Filter arrangement and methods | James A. LeBlanc | 2005-11-01 |
| 6599344 | Filter arrangement and methods | Ryan E. McVay | 2003-07-29 |
| 6533845 | Filter arrangement and methods | James A. LeBlanc | 2003-03-18 |
| 6368374 | Filter arrangement and methods | Ryan E. McVay | 2002-04-09 |
| 6348085 | Filter arrangement and methods | James A. LeBlanc | 2002-02-19 |
| D450828 | Fluted filter element having a handle | — | 2001-11-20 |
| 6235195 | Filter element incorporating a handle member | — | 2001-05-22 |
| 6213146 | Valve assembly for preventing liquid ingestion and methods | Daniel T. Risch, Gary R. Gillingham, Fred H. Wahlquist, Wayne M. Wagner, Bernard A. Matthys +1 more | 2001-04-10 |
| 6210469 | Air filter arrangement having first and second filter media dividing a housing and methods | — | 2001-04-03 |
| 6209559 | Valve assembly for preventing liquid ingestion and methods | Daniel T. Risch, Gary R. Gillingham, Fred H. Wahlquist, Wayne M. Wagner, Bernard A. Matthys +1 more | 2001-04-03 |
| D428128 | Conical filter | Gary R. Gillingham, Wayne M. Wagner, Daniel T. Risch, Jim C. Rothman, Steven A. Carter | 2000-07-11 |
| D425189 | Combined filter element and frame therefor | Gary R. Gillingham, Bernard A. Matthys, Daniel T. Risch | 2000-05-16 |
| 6048386 | Integrated resonator and filter apparatus | Gary R. Gillingham, Daniel T. Risch, Wayne M. Wagner, Bernard A. Matthys, Edward A. Steinbrueck | 2000-04-11 |
| 6009898 | Valve assembly for preventing liquid ingestion and methods | Daniel T. Risch, Gary R. Gillingham, Fred H. Wahlquist, Wayne M. Wagner, Bernard A. Matthys +1 more | 2000-01-04 |
| 5935284 | Filter cartridge | Mervin E. Wright, Timothy H. Grafe, James A. LeBlanc | 1999-08-10 |
| 5931988 | Cabinet filter assembly and methods | James A. LeBlanc, Daniel T. Risch | 1999-08-03 |
| 5902364 | Conical filter | Gary R. Gillingham, Wayne M. Wagner, Daniel T. Risch, Jim C. Rothman, Fred H. Wahlquist +2 more | 1999-05-11 |
| 5871557 | Mist collector cartridge | Mervin E. Wright, Timothy H. Grape, James A. LeBlanc | 1999-02-16 |
| D399944 | Conical filter | Gary R. Gillingham, Wayne M. Wagner, Daniel T. Risch, Jim C. Rothman, Steven A. Carter | 1998-10-20 |
| 5820646 | Inline filter apparatus | Gary R. Gillingham, Wayne M. Wagner, Daniel T. Risch, Jim C. Rothman, Fred H. Wahlquist | 1998-10-13 |