Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6444121 | Fuel filter system with water bleed and water trap | — | 2002-09-03 |
| 5766463 | Fuel filter cartridge | Leon P. Janik | 1998-06-16 |
| 5614091 | Fuel filter master module with optional diverter capability | Leon P. Janik, Robert W. Zeiner | 1997-03-25 |
| 5489384 | Single stage fuel filter with seal control air purge | Leon P. Janik | 1996-02-06 |
| 5484527 | Module for filter assembly base | Leon P. Janik | 1996-01-16 |
| D356852 | Fuel filter cartridge | Leon P. Janik | 1995-03-28 |
| 5302284 | Fuel filter with spring-loaded retention system | Robert W. Zeiner | 1994-04-12 |
| 5271836 | Disposal plug for filter cartridge | Leon P. Janik, C. Eugene Brady | 1993-12-21 |
| 5084170 | Fuel filter | Leon P. Janik | 1992-01-28 |
| 5017285 | Fuel filter and cartridge assembly | Leon P. Janik | 1991-05-21 |
| 4976852 | Fuel filter | Leon P. Janik | 1990-12-11 |
| 4956081 | Fuel filter with diaphragm pump | David H. Hodgkins | 1990-09-11 |