Issued Patents All Time
Showing 1–25 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9932943 | Filter element | Steven J. Merritt | 2018-04-03 |
| 9890750 | Filter element | Steven J. Merritt | 2018-02-13 |
| 8551375 | Filter element | Steven J. Merritt | 2013-10-08 |
| 8540790 | Filter element | Steven J. Merritt | 2013-09-24 |
| 8277531 | Filter element | Steven J. Merritt | 2012-10-02 |
| 8206625 | Filter element | Steven J. Merritt | 2012-06-26 |
| 8038384 | Omni-directional turbine and method | — | 2011-10-18 |
| 7931725 | Fluted filter apparatus | Robert M. Wydeven, Steven J. Merritt | 2011-04-26 |
| 7361271 | Environmentally friendly dual lube venturi filter cartridge | Steven J. Merritt | 2008-04-22 |
| 7318851 | Filter element | Steven J. Merritt | 2008-01-15 |
| 7311208 | Environmentally friendly filter cartridge | Steven J. Merritt | 2007-12-25 |
| 7232521 | Environmentally friendly acid neutralizing cartridge | Steven J. Merritt | 2007-06-19 |
| 7182864 | Housing for environmentally friendly filter cartridge | Steven J. Merritt | 2007-02-27 |
| 7179380 | Environmentally friendly dual lube venturi filter cartridge | Steven J. Merritt | 2007-02-20 |
| 7168573 | Environmentally friendly filter cartridge | Steven J. Merritt | 2007-01-30 |
| 7014761 | Environmentally friendly dual lube venturi filter cartridge | Steven J. Merritt | 2006-03-21 |
| 6984319 | Environmentally friendly acid neutralizing full flow cartridge | Steven J. Merritt | 2006-01-10 |
| 6919023 | Acid neutralizing filter canister | Steven J. Merritt, Allan Roush, John H. Beard | 2005-07-19 |
| 6626299 | Environmentally friendly filter cartridge | Jeffrey E.D. Rogers | 2003-09-30 |
| 6615989 | Method of assembling an improved bead-lock high-pressure filter utilizing a stamped metal cover, and filter obtained thereby | Steven C. Julson | 2003-09-09 |
| 6607665 | Fuel filter element and cover assembly | Walter Fick, David A. Biere | 2003-08-19 |
| 6520902 | Centrifuge cartridge for removing soot from engine oil | Steven J. Merritt | 2003-02-18 |
| 6517475 | Centrifugal filter for removing soot from engine oil | Steven J. Merritt, 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 | Steven J. Merritt | 2002-08-06 |
| 6296765 | Centrifuge housing for receiving centrifuge cartridge and method for removing soot from engine oil | Steven J. Merritt, Farrell F. Calcaterra | 2001-10-02 |