Issued Patents All Time
Showing 1–25 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11596878 | Underdrain assembly and method of manufacturing same | — | 2023-03-07 |
| 10981089 | Underdrain assembly and method of manufacturing same | — | 2021-04-20 |
| 10722846 | Method and system for cleaning membrane filters | Donald F. Bersell | 2020-07-28 |
| 10625183 | Underdrain assembly and method of manufacturing same | — | 2020-04-21 |
| 10307714 | Method and system for cleaning membrane filters | Donald F. Bersell | 2019-06-04 |
| 10238996 | Underdrain assembly and method of manufacturing same | — | 2019-03-26 |
| 10080994 | Method and system for cleaning membrane filters | Donald F. Bersell | 2018-09-25 |
| 9931588 | Underdrain assembly and method of manufacturing the same | — | 2018-04-03 |
| 9821275 | Method and system for cleaning membrane filters | Donald F. Bersell | 2017-11-21 |
| 9656190 | Underdrain assembly and method of manufacturing the same | — | 2017-05-23 |
| 9320991 | Underdrain assembly and method of manufacturing the same | — | 2016-04-26 |
| 9192895 | Cascade aerator assembly | — | 2015-11-24 |
| 8074810 | Methods of and sludge collector with adjacent opposed oppositely-moving blades for moving sludge in a basin | Joseph Karl Brauch | 2011-12-13 |
| 7981302 | Method and apparatus for enhanced settling and collection of settled material | Joseph Karl Brauch | 2011-07-19 |
| 7780015 | Methods of and sludge collector with adjacent opposed oppositely-moving blades for moving sludge in a basin | Joseph Karl Brauch | 2010-08-24 |
| 7718076 | Methods of and common gantry drive for single-pass cleaning of multiple stages of a material separation and removal system | — | 2010-05-18 |
| 7560035 | Overhead trough with constant trough flow velocity configuration and methods of regulating trough flow velocity | — | 2009-07-14 |
| 7314572 | Methods of and apparatus for low-angle-tray settling with multi-zone configuration | — | 2008-01-01 |
| 7169312 | Methods of and apparatus for collecting sludge from the floor of a settler basin | — | 2007-01-30 |
| 7159724 | Apparatus for collecting sludge from the floor of a settler basin | Joseph Karl Brauch, James Malcolm Meurer | 2007-01-09 |
| 7105096 | Collection of sludge from the floor of a basin with multiple balanced-flow headers | — | 2006-09-12 |
| 7021472 | Collection of sludge from the floor of a basin with multiple balanced-flow headers | — | 2006-04-04 |
| 6971398 | Hydrodynamic-force-responsive baffle for liquid treatment basin | Joseph Karl Brauch | 2005-12-06 |
| 6951620 | Apparatus and methods for collecting sludge from the floor of a settler basin | Joseph Karl Brauch, James Malcolm Meurer | 2005-10-04 |
| 6783009 | Solely-bent baffle for liquid treatment basin | — | 2004-08-31 |