Issued Patents 2011
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7993532 | Method of filtration using cloth media and self-aligning backwash assembly | Peter G. Baumann, Lloyd W. Johnson, Eugen O. Bergmann | 2011-08-09 |
| 7981290 | Backwash assembly having a rotating backwash arm for cleaning cloth filter media | Peter G. Baumann | 2011-07-19 |
| 7976597 | Cyclonic separation apparatus | — | 2011-07-12 |
| 7955406 | Cyclonic separation apparatus | — | 2011-06-07 |
| 7955405 | Cyclonic separation apparatus | — | 2011-06-07 |
| 7892421 | Stationary cloth media filtration and self-aligning backwash assembly | Peter G. Baumann, Lloyd W. Johnson, Eugen O. Bergmann | 2011-02-22 |
| 7871527 | Processes for water and wastewater treatment, including stationary cloth media filtration | Paul Anthony Hughes, Lloyd W. Johnson, Peter G. Baumann | 2011-01-18 |