| Patents for E01F 5 - Draining the sub-base of roads or ballastway of railways by trenches, culverts, or conduits (873) |
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| 05/13/2009 | CN101429753A Well type heat-insulating water outlet |
| 05/12/2009 | US7530764 Easy clean culvert system |
| 05/06/2009 | CN201232147Y Rainwater application system for urban main road |
| 04/23/2009 | US20090103982 Trench drain with sloping rails |
| 04/16/2009 | WO2005098141A3 Hydraulic wick apparatus and method |
| 04/01/2009 | EP2041367A2 Adjustable anchor rod |
| 03/26/2009 | US20090080970 Surface drainage system |
| 03/19/2009 | DE202008015753U1 Amphibienleitstein und Amphibienleitsystem Amphibienleitstein and amphibians control system |
| 03/18/2009 | CN100469971C Arrangement method for town road |
| 03/04/2009 | CN100465379C An underground steel plate structure using corrugated steel plates and a construction method thereof |
| 02/18/2009 | CN100462504C Road surface runoff treating pool |
| 12/17/2008 | CN101324057A Subway unballasted track ditch construction method and used formwork |
| 12/04/2008 | WO2008008951A3 Adjustable anchor rod |
| 11/19/2008 | CN101307587A Surface water-free plaza ground paving method |
| 11/18/2008 | CA2469603C Culvert cleaning tool and method |
| 11/13/2008 | DE102007021308A1 Installation device e.g. manhole, for constructing e.g. road, has reinforcing part suitable for damping mechanical forces at fine layer, where forces arise between device and base |
| 11/12/2008 | CN101302743A Steel bell and spigot prestress thin wall concrete pipe |
| 10/08/2008 | CN201128885Y Well type heat-insulating water outlet |
| 10/01/2008 | CN201125367Y Road saliva floe ice multi-exit port water drain ice blocking system |
| 09/24/2008 | CN101270561A Method for resolving surface drainage and communal facilities paving problem of city |
| 09/10/2008 | EP1966450A1 Reinforcement method and reinforcement structure of the corrugated steel plate structure |
| 09/04/2008 | WO2008104075A1 Environmental culvert system |
| 09/04/2008 | CA2679462A1 Environmental culvert system |
| 09/03/2008 | EP1963582A1 Reinforcement of arch type structure with beveled/skewed ends |
| 07/15/2008 | US7398785 Method for cleaning a culvert |
| 06/04/2008 | CN201068550Y Road drainage structure |
| 05/21/2008 | CN101182704A Method for discharging bridges and culverts stood water |
| 05/20/2008 | CA2460081C Reinforced soil arch |
| 04/22/2008 | CA2254595C Underground reinforced soil/metal structures |
| 03/18/2008 | US7344335 Methods and modules for an underground assembly for storm water retention or detention |
| 03/18/2008 | CA2499539C Precast safety end and form therefor |
| 01/17/2008 | CA2659386A1 Adjustable anchor rod |
| 01/02/2008 | CN200999325Y Highway pipe road surface drainage arrangement |
| 12/18/2007 | US7309188 Drainable base course for a landfill and method of forming the same |
| 12/11/2007 | US7305798 Composite overfilled arch system |
| 11/14/2007 | CN200974960Y Road surface radial flow treatment pool |
| 11/13/2007 | US7293937 Cover arrangement |
| 11/01/2007 | US20070253776 Precast arch structure with skewed ends |
| 11/01/2007 | US20070253775 Culvert bundle for stream crossings and flow-through bridge abutments |
| 11/01/2007 | CA2586546A1 Culvert bundle for stream crossings and flow-through bridge abutments |
| 10/24/2007 | EP1846620A2 A water detention system incorporating a composite drainage membrane |
| 10/17/2007 | CN101054785A Arrangement method for town road |
| 10/11/2007 | DE102006054527A1 Drainage system for removing water from roads and tunnels comprises collecting channels arranged in a drainage system and having a double drainage pipe arrangement with drainage pipes moving against each other |
| 10/10/2007 | CN100342084C Construction cavities forming method and object containing cavities fabricated thereby |
| 08/29/2007 | CN101024939A Water-stopping treatment method for steel reinforced concrete pipe culvert |
| 08/21/2007 | CA2300514C Method for thawing frozen road culverts |
| 08/16/2007 | US20070186963 Drainage structure cleaning apparatus |
| 08/14/2007 | CA2310529C Method and apparatus for installing culverts |
| 07/11/2007 | CN1995546A Road surface runoff treating pool |
| 07/05/2007 | US20070154266 Culvert inlet protection device |
| 07/04/2007 | EP1803851A1 Purification system for rainwater |
| 06/28/2007 | WO2007071067A1 Reinforcement of arch type structure with beveled/skewed ends |
| 06/23/2007 | CA2531547A1 Reinforcement for arch type structure with beveled/skewed ends |
| 05/17/2007 | US20070110519 Culvert opening and cleaning apparatus |
| 05/03/2007 | US20070098500 Wick assembly and method for installing an underdrain |
| 04/10/2007 | US7201533 Sewer grate locking mechanism and method of installing same |
| 03/15/2007 | US20070059102 Precast concrete bridge and headwall assembly and method of production |
| 03/15/2007 | US20070059101 Beaver control device for a culvert pipe |
| 02/28/2007 | CN2873869Y Light composite round pipe culvert |
| 02/06/2007 | US7172033 Culvert opening and cleaning apparatus |
| 01/31/2007 | CN2863877Y Round tube culvert adapted for collapsible loess area |
| 01/09/2007 | US7160058 Methods and module for an underground assembly for storm water retention or detention |
| 12/28/2006 | WO2006085095A3 A water detention system incorporating a composite drainage membrane |
| 12/05/2006 | US7144185 Street grid for surface drainage |
| 11/21/2006 | US7137756 Fluid-tight bell-and-spigot-joint for box culverts |
| 11/16/2006 | WO2006120275A1 Modular prefabricated element for surface drainage on dirt roads |
| 11/15/2006 | CN2837360Y Water permeable road and pavement structure |
| 11/07/2006 | US7131788 High-flow void-maintaining membrane laminates, grids and methods |
| 10/10/2006 | US7118306 Stormwater management system |
| 08/17/2006 | WO2006085095A2 A water detention system incorporating a composite drainage membrane |
| 08/17/2006 | CA2597382A1 A water detention system incorporating a composite drainage membrane |
| 07/26/2006 | CN1807760A Road drainage system and construction process thereof |
| 07/25/2006 | US7080956 Open bottom box culvert |
| 07/20/2006 | US20060159515 Surface water drainage system |
| 07/20/2006 | US20060157096 Drainage structure cleaning tool and method |
| 07/20/2006 | US20060157083 Drainage structure cleaning tool and method |
| 06/14/2006 | EP1252393B1 Drainage system |
| 06/06/2006 | US7056058 Transport corridor drainage systems |
| 06/01/2006 | US20060115330 Open bottom box culvert |
| 05/30/2006 | US7052210 Inlet collar for highway culverts |
| 05/30/2006 | US7052209 Corrugated stormwater chamber |
| 05/30/2006 | US7052207 Sediment control drain and method of construction |
| 04/26/2006 | CN2775119Y Truct for railway bridge construction |
| 03/07/2006 | US7008137 Cover for a drainage arrangement and a method of producing such an arrangement |
| 02/21/2006 | US7001110 Precast concrete retaining wall |
| 12/08/2005 | WO2005116344A1 Inlet collar for highway culverts |
| 12/08/2005 | DE202005012161U1 Ground roadside barrier for migrating amphibians |
| 11/24/2005 | US20050260039 Inlet collar for highway culverts |
| 11/08/2005 | US6962465 Method for improving the environment within soil embedded culvert and bridge systems |
| 10/20/2005 | WO2005098141A2 Hydraulic wick apparatus and method |
| 10/20/2005 | CA2560509A1 Hydraulic wick apparatus and method |
| 09/29/2005 | US20050214070 Hydraulic wick apparatus and method |
| 09/08/2005 | US20050196238 Sewer grate locking mechanism and method of installing same |
| 09/06/2005 | CA2351181C Beaver control screen for culvert pipe |
| 09/01/2005 | US20050191130 Precast concrete retaining wall |
| 07/28/2005 | US20050160634 Culvert opening and cleaning apparatus |
| 07/21/2005 | US20050158123 Void-maintaining synthetic drainable base courses in landfills and other large structures, and methods for controlling the flow and evacuation of fluids from landifills |
| 07/06/2005 | CN1635225A Construction cavities forming method and object containing cavities fabricated thereby |
| 06/09/2005 | US20050123354 Method for improving the environment within soil embedded culvert and bridge systems |
| 05/18/2005 | CN1202313C Non cohesire soil thick covering super long large frame structure jacking technology |