| 2024/0295,089 | WATER CHANNEL | Feb 29, 24 | Sep 05, 24 | Not available |
| 2024/0279,853 | KNITTED GEOTEXTILE | Feb 20, 24 | Aug 22, 24 | Not available |
| 2024/0158,998 | VEHICLE-TO-ROAD TECHNOLOGY FOR ALIGNMENT, STOPPING, SLOWING, AND SLIPPING BY ELECTROMAGNETIC FORCES | Oct 09, 23 | May 16, 24 | Not available |
| 2023/0313,472 | PERFORATED BOX CULVERT | Mar 31, 23 | Oct 05, 23 | Not available |
| 2021/0301,484 | Culvert To Ditch Transitioning Device | Mar 30, 20 | Sep 30, 21 | Not available |
| 2021/0148,068 | SYSTEM TO PREVENT AND MITIGATE STORM SURGE DAMAGE, SEA-LEVEL RISE DAMAGE, RIVERINE FLOODING DAMAGE COMPRISING MODIFIED CONCRETE CULVERTS, PEDESTRIAN ACCESS AND NATURAL COASTAL, RIVER, CREEK, AND WETLAND ECOSYSTEMS | Dec 16, 20 | May 20, 21 | Not available |
| 2021/0102,348 | TRENCH DRAIN ALIGNMENT SYSTEM | Oct 02, 19 | Apr 08, 21 | Not available |
| 2021/0032,990 | METHOD FOR RENOVATING, REPAIRING, REINFORCING, PROTECTING OR NEWLY CREATING CORRUGATED METAL-SHEET TUNNELS, AND CORRUGATED METAL-SHEET TUNNELS OF THIS TYPE | Apr 04, 19 | Feb 04, 21 | S & P CLEVER REINFORCEMENT COMPANY AG |
| 2020/0392,679 | System and Method for Constructing a Culvert Using Vehicle Tires | Jun 12, 20 | Dec 17, 20 | Not available |
| 2020/0048,846 | MULTI-SIDED CULVERT | Feb 14, 17 | Feb 13, 20 | Not available |
| 2019/0330,809 | Interlocking Concrete Pavement Drain | Apr 25, 18 | Oct 31, 19 | Not available |
| 2018/0195,243 | BOX CULVERT | Nov 03, 17 | Jul 12, 18 | Not available |
| 2018/0100,300 | Dome Stormwater Chamber | Oct 12, 16 | Apr 12, 18 | Advanced Drainage Systems Inc. |
| 2017/0314,217 | PIPE COVER AND METHOD FOR COVERING AN END OF A PIPE | Apr 27, 17 | Nov 02, 17 | Not available |
| 2017/0218,581 | CULVERT PIPE INLET | Jan 31, 17 | Aug 03, 17 | Not available |
| 2017/0145,643 | REINFORCEMENT SYSTEM AND METHOD FOR CORRUGATED PLATE STRUCTURES | Nov 21, 16 | May 25, 17 | CONTECH ENGINEERED SOLUTIONS LLC |
| 2017/0016,187 | BRIDGE SYSTEM ADAPTED FOR PROMOTING SEDIMENTATION | Sep 28, 16 | Jan 19, 17 | CONTECH ENGINEERED SOLUTIONS LLC |
| 2016/0376,756 | PRECAST CONCRETE BRIDGE UNIT AND HEADWALL ASSEMBLY AND METHOD OF PRODUCTION | Jun 26, 15 | Dec 29, 16 | PreTek Group |
| 2015/0345,087 | PROTECTION SYSTEM FOR AVOIDING OBSTACLES IN ROADSIDE DITCHES | Sep 03, 12 | Dec 03, 15 | Not available |
| 2015/0240,470 | DRAINAGE CHANNEL WITH A DRAINAGE BODY AND A COVER | Sep 09, 13 | Aug 27, 15 | ACO SEVERIN AHLMANN GMBH & CO. KG |