Issued Patents All Time
Showing 25 most recent of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11845043 | Large bubble mixer and method of using same in a wastewater treatment system | — | 2023-12-19 |
| 11325079 | Combined coarse and fine bubble diffuser | — | 2022-05-10 |
| 10150684 | System and method for preventing ammonia rebound in a cold-weather bioreactor | — | 2018-12-11 |
| 10105660 | Diffuser membrane and method of manufacture | Warrick S. Wadman, David A. Capron | 2018-10-23 |
| 9796611 | Wastewater treatment system and method | — | 2017-10-24 |
| 9795933 | Diffuser membrane and method of manufacture | Warrick S. Wadman, David A. Capron | 2017-10-24 |
| 9598296 | Decanted bio-balanced reactor and method | Randall C. Chann | 2017-03-21 |
| 8931763 | Modular diffuser body and aeration system | Randall C. Chann, Randy K. Hulsebus | 2015-01-13 |
| 8758620 | Decanted bio-balanced reactor and method | Randall C. Chann | 2014-06-24 |
| 8246018 | Diffuser assembly with buoyancy vessel | — | 2012-08-21 |
| 8172207 | Gas diffuser membrane with coated substrate | — | 2012-05-08 |
| 8061689 | Disk diffuser with improved seal | — | 2011-11-22 |
| 8016272 | Retrievable diffuser module with truss construction | — | 2011-09-13 |
| 8011643 | Diffuser assembly with buoyancy vessel | — | 2011-09-06 |
| 7934704 | Retrievable diffuser module with internal ballast/buoyancy chamber | — | 2011-05-03 |
| 7815974 | Gas diffuser membrane with coated substrate | — | 2010-10-19 |
| 7713415 | Method and apparatus for enhancing aquatic environments | Peter Riddell | 2010-05-11 |
| 7544286 | Method and apparatus for enhancing aquatic environments | Peter Riddell | 2009-06-09 |
| 7044453 | Membrane diffuser with uniform gas distribution | — | 2006-05-16 |
| 7041219 | Method and apparatus for enhancing wastewater treatment in lagoons | Randall C. Chann | 2006-05-09 |
| 6770200 | Method and apparatus for enhancing wastewater treatment in lagoons | Randall C. Chann | 2004-08-03 |
| 6543753 | Air diffuser membrane treated with biocide | — | 2003-04-08 |
| 6497402 | Diffuser mounting system for aeration of liquids | — | 2002-12-24 |
| 5846412 | Diffuser construction and mounting arrangement | — | 1998-12-08 |
| 5788847 | Diffuser construction and mounting arrangement | — | 1998-08-04 |