| 9989172 | Pump suction pipe assembly for high flow sewer bypass | Dec 28, 15 | Jun 05, 18 | BAKERCORP |
| 9951508 | Assembly for detaining or retaining liquid beneath a ground surface | Oct 18, 16 | Apr 24, 18 | StormTrap LLC |
| 9663935 | Wastewater treatment systems and related methods | Feb 12, 15 | May 30, 17 | Not available |
| 9435435 | Universal secondary safety system including a riser and screen | Nov 04, 14 | Sep 06, 16 | Gavin, Peter W. |
| 9322157 | Mechanically coupled drain fixture and outlet fitting | Feb 27, 14 | Apr 26, 16 | SIOUX CHIEF MFG. CO., INC. |
| 8888465 | Sewage handling system, cover, and controls | Aug 16, 13 | Nov 18, 14 | Liberty Pumps, Inc. |
| 7001507 | Retention and removal of debris and pollutants from surface water runoff | May 22, 03 | Feb 21, 06 | OLDCASTLE PRECAST, INC. |
| 6632370 | Method for entraining and mixing gas with liquids | Jan 08, 02 | Oct 14, 03 | Vortex Flow, Inc. |
| 6059964 | Collapsible catch basin grate filter assembly | Dec 03, 98 | May 09, 00 | SLAMMER MANUFACTURING, L.L.C. |
| 5650065 | Skimmer cover for dry well in a catch basin | Jan 22, 96 | Jul 22, 97 | SEWELL, CHAD D., SEWELL, JASON S., |
| 5366318 | Sump assembly | Aug 19, 93 | Nov 22, 94 | ENVIRON PRODUCTS, INC. |
| 4522533 | Flow restrictor | Jun 22, 83 | Jun 11, 85 | UNIVERSITY OF OTTAWA, CORPORATION OF THE TOWN OF VAUGAN, 2141 MAJOR MACKENZIE DRIVE, MAPLE, ONTRIO, CANADA LOJ 1EO, The Corporation of the Town of Vaughan, UNIVERSITY OF OTTAWA, THE C/O THE SECRETARY, 550 CUMBERLAND ST., OTTAWA, ONTARIO, CANADA, K1N 5N5, |