Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11944925 | Liquid filter arrangement; components; and, methods | Brent A. Gulsvig, John R. Hacker | 2024-04-02 |
| 11207621 | Liquid filter arrangement; components; and, methods | Brent A. Gulsvig, John R. Hacker | 2021-12-28 |
| 10493386 | Liquid filter arrangement; components; and, methods | Brent A. Gulsvig, John R. Hacker | 2019-12-03 |
| 9751033 | Liquid filter arrangement; components; and, methods | Brent A. Gulsvig, John R. Hacker | 2017-09-05 |
| 8821724 | Liquid filter arrangement; components; and, methods | Brent A. Gulsvig, John R. Hacker | 2014-09-02 |
| 8535530 | Liquid filter arrangement; components; and, methods | Brent A. Gulsvig, John R. Hacker | 2013-09-17 |
| 7628280 | Liquid filter arrangement; components; and methods | Brent A. Gulsvig, John R. Hacker | 2009-12-08 |
| 7238285 | Liquid filter assembly for use with treatment agent; and, methods | John R. Hacker, Brent A. Gulsvig | 2007-07-03 |
| 7160451 | Liquid filter assembly for use with treatment agent and methods | John R. Hacker, Brent A. Gulsvig | 2007-01-09 |