Patents per Year
Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 9546896 | Method and apparatus for measuring ash deposit levels in a particular filter | Michael C. Gatz, Steven F. Meister | 2017-01-17 | $26,315,000 |
| 8979986 | Method and apparatus for measuring ash deposit levels in a particulate filter | Steven F. Meister, Michael C. Gatz | 2015-03-17 | $8,135,000 |
| 8568536 | Filter cleaning tool and method | Steven F. Meister, Dwain L. Kamphuis | 2013-10-29 | $32,161,000 |
| 8157897 | Filter purge system utilizing impact wave generating device and vacuum source | Steven F. Meister, Jamie Erin Frisch | 2012-04-17 | $47,317,000 |
| 8070857 | Particulate removal tool | Jim Jirele, Stan Norland, William Brown, Jamie Stringfield, Mark Alan Gasper +6 more | 2011-12-06 | $10,344,000 |