Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10913014 | Multiple rate filter underdrain lateral gas metering plate | Dean T. Berkebile, Ivan Zhu | 2021-02-09 |
| 10881989 | Self-cleaning, groutless, filter underdrain | Dean T. Berkebile, Scott R. Cable, Robert J. Green, Howard J. Sweeney, Robert Lee Wiley, Jr. | 2021-01-05 |
| 10881990 | Filter media retainer and underdrain system having a filter media retainer | Robert J. Green, Howard J. Sweeney, Robert Lee Wiley, Jr. | 2021-01-05 |
| 10525382 | Grout support installation method for filter underdrain system | Brian J. Bates | 2020-01-07 |
| 10173150 | Wall adaptor for filter underdrain | Howard J. Sweeney | 2019-01-08 |
| 9764259 | Grout support installation method for filter underdrain system | Brian J. Bates | 2017-09-19 |
| D773018 | Wall adaptor for filter underdrain | Howard J. Sweeney | 2016-11-29 |
| 9199186 | Underdrain flume plate | Daniel E. Bruce, Christopher J. Ball | 2015-12-01 |
| 8657122 | Clog resistant media retainer assembly | Christopher J. Ball | 2014-02-25 |
| 8357295 | Adjustable anchor rod | — | 2013-01-22 |
| 8323514 | Method and system for cleaning filter media support structures | Eugene M. Vegso, Christopher J. Ball, Robert L. Laird, Thomas M. Getting, Dean T. Berkebile | 2012-12-04 |
| 8226834 | Apparatus and method for distributing gas and liquid during backwash in filter underdrain flumes using dual separation | — | 2012-07-24 |
| 6312611 | Apparatus for distributing gas and liquid during concurrent gas/liquid backwash in filter underdrain flumes | Eugene O. Bergman, Richard Hsieh | 2001-11-06 |
| 6306310 | Apparatus for distributing gas and liquid during concurrent gas/liquid backwash in filter underdrain flumes | Eugen O. Bergmann, Richard Hsieh | 2001-10-23 |