Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9168536 | Vertical vortex generating sluice/slurry separator | — | 2015-10-27 |
| 8777190 | Wet scrubber tray | Ronald B. Johnson, Ronald Dureiko, J. Jeffrey Kidwell | 2014-07-15 |
| 8413967 | Wet scrubber tray | Ronald B. Johnson, Ronald Dureiko, J. Jeffrey Kidwell | 2013-04-09 |
| 7707782 | Absorber tower metal hood to concrete shell attachment | Ronald Dureiko, Gary W. Diefendorff, Bruce P. Guilliams | 2010-05-04 |
| 4288027 | Openable cardboard lid for extendable popcorn pans | — | 1981-09-08 |
| D260370 | Popcorn container lid | — | 1981-08-25 |