Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1090791 | Filter tube holding grommet | David E. Sisk, Peter Kemp, Andrew Boyer, Roger Breakfield | 2025-08-26 |
| 12337269 | Vacuum filter assembly for processing bulk granular material and filter mounting assembly therefore | David E. Sisk, Peter Kemp, Roger Breakfield, Andrew Boyer | 2025-06-24 |
| 12280327 | Vacuum filter assembly for cleansing air for use in transfer of bulk, granular material as in conveying vehicles | David E. Sisk, Peter Kemp, Roger Breakfield, Andrew Boyer | 2025-04-22 |
| 12115473 | Pressure and heat molded polymer tube with interlocking grommet | David E. Sisk, Peter Kemp, Roger Breakfield, Andrew Boyer, Todd Watkins +1 more | 2024-10-15 |