Issued Patents All Time
Showing 51–61 of 61 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7014761 | Environmentally friendly dual lube venturi filter cartridge | Gene W. Brown | 2006-03-21 |
| 6984319 | Environmentally friendly acid neutralizing full flow cartridge | Gene W. Brown | 2006-01-10 |
| 6919023 | Acid neutralizing filter canister | Gene W. Brown, Allan Roush, John H. Beard | 2005-07-19 |
| 6579218 | Centrifugal filter utilizing a partial vacuum condition to effect reduced air drag on the centrifuge rotor | David F. May, Louis A. Krempel | 2003-06-17 |
| 6520902 | Centrifuge cartridge for removing soot from engine oil | Gene W. Brown | 2003-02-18 |
| 6517475 | Centrifugal filter for removing soot from engine oil | Gene W. Brown, Farrell F. Calcaterra, John H. Beard, David F. May, Louis A. Krempel | 2003-02-11 |
| 6428700 | Disposable centrifuge cartridge backed up by reusable cartridge casing in a centrifugal filter for removing soot from engine oil | Gene W. Brown | 2002-08-06 |
| 6296765 | Centrifuge housing for receiving centrifuge cartridge and method for removing soot from engine oil | Gene W. Brown, Farrell F. Calcaterra | 2001-10-02 |
| 6261455 | Centrifuge cartridge for removing soot from oil in vehicle engine applications | Gene W. Brown, Farrell F. Calcaterra | 2001-07-17 |
| 5919279 | Self contained heavy-duty air filter | Allen J. Liibbe | 1999-07-06 |
| 5766468 | Dual media primary/secondary fuel filter | Gene W. Brown, David A. Biere | 1998-06-16 |