Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6248236 | Double pass fuel filter assembly | — | 2001-06-19 |
| 6174438 | Dual pass fuel filter assembly and element therefor | Walter H. Stone | 2001-01-16 |
| 6171491 | Fuel filter assembly with standpipe having valve element | Peter Popoff, Michael D. Clausen, Russell D. Jensen, Walter H. Stone, Victor A. Oelschlaegel | 2001-01-09 |
| 6113781 | Fuel filter with dual flow | Peter Popoff, Michael D. Clausen, Russell D. Jensen, Walter H. Stone, Victor A. Oelschlaegel | 2000-09-05 |
| 6053334 | Fuel filter with valve device | Peter Popoff, Michael D. Clausen, Russell D. Jensen, Walter H. Stone, Victor A. Oelschlaegel | 2000-04-25 |
| 6015492 | Fuel filter assembly with replaceable element | Peter Popoff, Michael D. Clausen, Victor R. Oelschlaegel | 2000-01-18 |
| 5922199 | Double pass fuel filter assembly | — | 1999-07-13 |
| 5807481 | Oil filter assembly with support for removable planar filter | Dale M. Giva | 1998-09-15 |
| 5770065 | Fuel filter assembly with replacement element | Peter Popoff, Michael D. Clausen, Victor R. Oelschlaegel | 1998-06-23 |
| 5207898 | Filter head with integral priming pump and valved bypass passage | — | 1993-05-04 |
| 5197443 | Fuel system for diesel truck | — | 1993-03-30 |
| 5035729 | Liquid separation and recovery apparatus for fuel tank vent line | — | 1991-07-30 |
| 5019141 | Vent line separator | Jeffrey H. Granville, John P. Church | 1991-05-28 |
| 4971528 | Lube oil pump with relief valve | Leon P. Janik | 1990-11-20 |
| 4956081 | Fuel filter with diaphragm pump | M. Craig Maxwell | 1990-09-11 |
| 4938036 | Combination air conditioning accumulator and fuel cooler | John J. Foley | 1990-07-03 |
| 4901679 | Spray nozzle assembly for piston cooling | Leon P. Jahik | 1990-02-20 |
| 4898668 | Fuel filter with heater | Alex Shinkevich | 1990-02-06 |
| 4876990 | Spray nozzle assembly for piston cooling | Leon P. Janik | 1989-10-31 |
| 4862838 | Crankcase oil spray nozzle for piston cooling | Leon P. Janik | 1989-09-05 |
| 4860713 | Back-to-back fuel filter and water separator | — | 1989-08-29 |
| 4618423 | Disposable fuel filter/water separator element | — | 1986-10-21 |
| D284300 | Filter cartridge | — | 1986-06-17 |
| 4491120 | Fuel conditioner | — | 1985-01-01 |
| D254086 | Fuel oil filter | — | 1980-01-29 |