Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11702832 | Vacuum-assisted toilet systems and methods of using the same | Scott D. Sommerfeldt, Scott L. Thomson | 2023-07-18 |
| 11560704 | Noise reduction pipes, vacuum-assisted toilet systems including the same, and methods of using the same | Scott D. Sommerfeldt, Scott L. Thomson, Michael Rose | 2023-01-24 |
| 11408161 | Vacuum-assisted toilet systems and methods of using the same | Scott D. Sommerfeldt, Scott L. Thomson | 2022-08-09 |
| 10683652 | Multiple rinse injections to reduce sound in vacuum toilets | David Beach, John-Paul Jaewoon Yu, Scott D. Sommerfeldt, Garen Murray, Razmik B. Boodaghians +1 more | 2020-06-16 |
| 7272234 | Multi-channel active control system and method for the reduction of tonal noise from an axial fan | Scott D. Sommerfeldt | 2007-09-18 |