Issued Patents All Time
Showing 26–47 of 47 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7412896 | Filter change indicator | Leon P. Janik, Stephen Vardion | 2008-08-19 |
| 7360433 | Filter change indicator | Leon P. Janik, Stephen Vardion | 2008-04-22 |
| 7278420 | Oropharyngeal airway | Arjunan Ganesh, Valerie Armstead | 2007-10-09 |
| 7137303 | Filter change indicator | Leon P. Janik, Stephen Vardion | 2006-11-21 |
| 6843911 | Base receptacle with fixed retainer for filter cartridge incorporating a peripheral compatibility matrix | Leon P. Janik | 2005-01-18 |
| 6755308 | Filter cartridge with grommet spring | Leon P. Janik | 2004-06-29 |
| 6740234 | Key track system | Thomas Tornatore, Leon P. Janik | 2004-05-25 |
| D484568 | Filter cartridge | Leon P. Janik | 2003-12-30 |
| 6658931 | Fluid flow sensing and control method and apparatus | Daniel M. Plumb, Benjamin E. Pettit | 2003-12-09 |
| D479300 | Filter cartridge | Leon P. Janik | 2003-09-02 |
| 6500335 | Filter system base module with self-locking cartridge retainer | Leon P. Janik | 2002-12-31 |
| 6388732 | Method and apparatus for producing digital photographic prints | Kevin W. Raber | 2002-05-14 |
| 6364121 | Filter cartridge with grommet spring | Leon P. Janik | 2002-04-02 |
| 6187188 | Filter cartridge retention system | Leon P. Janik | 2001-02-13 |
| D435631 | Filter cartridge | Leon P. Janik | 2000-12-26 |
| 6019890 | Fuel filter with hand primer | Leon P. Janik, Larry Cote | 2000-02-01 |
| 5985144 | Reverse flow cartridge | Leon P. Janik, Larry Cote | 1999-11-16 |
| 5938921 | Water baffle for filter cartridge | Leon P. Janik | 1999-08-17 |
| 5915926 | Lift pump for filter module | Leon P. Janik | 1999-06-29 |
| 5887573 | Fuel filter with cold start circuit | Leon P. Janik, Richard E. Atwood | 1999-03-30 |
| 5868931 | Primer system for filter assembly | Leon P. Janik | 1999-02-09 |
| 5794598 | Fuel circuit and circulation method for fuel injection system | Leon P. Janik | 1998-08-18 |