| Patents for E01F 5 - Draining the sub-base of roads or ballastway of railways by trenches, culverts, or conduits (873) |
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| 05/12/2005 | US20050100401 Transport corridor drainage systems |
| 05/12/2005 | US20050097689 Culvert cleaning tool and method |
| 05/06/2005 | WO2004027156B1 Precast safety end and form therefor |
| 04/05/2005 | US6874974 Reinforced soil arch |
| 03/01/2005 | US6860238 Culvert shelves to assist animal migration |
| 02/24/2005 | DE202004015063U1 Device for constructing crossings for cables and/or drainage pipes, in particular, under a road surface comprises a crossing pipe consisting of joinable bottom and top sections |
| 02/15/2005 | US6854928 Precast concrete culvert system |
| 02/10/2005 | WO2004027156A3 Precast safety end and form therefor |
| 01/12/2005 | CN2670429Y Culvert pipes |
| 01/12/2005 | CN1563589A Load shedding measure of foam sheet applied to upper burying type constructional work (such as culvert) |
| 11/03/2004 | CN2652991Y Plum blossom hole water guide tube special for road bed |
| 11/03/2004 | CN1174179C Method for structure duct in ground |
| 10/17/2004 | CA2448304A1 Method and apparatus for contructing an automative vehicle parking lot |
| 10/12/2004 | US6802669 Void-maintaining synthetic drainable base courses and methods for extending the useful life of paved structures |
| 09/16/2004 | US20040179899 Reinforced soil arch |
| 08/24/2004 | US6779946 Drainage structures |
| 08/03/2004 | US6769662 Form and method for casting a monolithic precast safety end |
| 07/20/2004 | US6764250 Method of load reduction on buried culvert using EPS block and/or geosynthetics |
| 07/08/2004 | US20040131423 High-flow void-maintaining membrane laminates, grids and methods |
| 06/23/2004 | EP1431461A1 Drain reinforcement |
| 06/01/2004 | CA2301361C Headwall structure |
| 05/18/2004 | US6736570 Precast safety end and form therefor |
| 04/29/2004 | US20040081517 Headwall for drain pipe |
| 04/21/2004 | EP1123444A4 Headwall for drain pipe |
| 04/14/2004 | CN2611426Y Prefabricated culvert member |
| 04/01/2004 | WO2004027156A2 Precast safety end and form therefor |
| 03/10/2004 | CN1141450C Openable urban road pipe network facilities |
| 02/18/2004 | CN1475631A Non cohesire soil thick covering super long large frame stoucture jacking technology |
| 02/12/2004 | DE20315599U1 Small animal and amphibian protective and movement tunnel is made of steel concrete |
| 02/12/2004 | DE20315597U1 Amphibian air conditioning tunnel is formed as a base-closed semi-tube of steel concrete constructed in one part |
| 01/22/2004 | US20040010962 Beaver barrier |
| 01/06/2004 | CA2237072C Method and apparatus for forming a trench |
| 12/04/2003 | US20030223821 Form and method for casting a monolithic precast safety end |
| 12/04/2003 | US20030223819 Void-maintaining synthetic drainable base courses and methods for extending the useful life of paved structures |
| 12/02/2003 | CA2330892C Beaver controlling culvert attachment |
| 11/27/2003 | US20030219312 Method of load reduction on buried culvert using EPS block and/or geosynthetics |
| 11/25/2003 | US6652187 Portable cofferdam and method for stabilizing the structural integrity of box culvert bridges |
| 11/11/2003 | US6644889 Headwall for drain pipe |
| 10/29/2003 | CN2583192Y Pneumatic tamper levellnig through prestressed concrete culvert pipe maintenance ring |
| 10/29/2003 | CN1125908C Composite concrete metal encased stiffeners for metal plate arch type structures |
| 10/22/2003 | CN2581477Y Road surafce with road side longitudinal draining body |
| 10/16/2003 | US20030194269 Precast safety end and form therefor |
| 10/15/2003 | CN2579944Y Ribbed floor type semicircular arc pass through culvert for steelbar concrete |
| 10/15/2003 | CN2579943Y Engineering member for building culvert |
| 09/07/2003 | CA2375006A1 Portable culvert beaver guard |
| 08/26/2003 | US6609854 Structure and method for detecting an inflated state of a flexible membrane dam |
| 07/31/2003 | US20030143029 Precast concrete culvert system |
| 07/31/2003 | US20030143028 Cold roll forming a short radius curvature into deep corrugated metal plate |
| 07/22/2003 | US6595722 Composite concrete metal encased stiffeners for metal plate arch-type structures |
| 06/18/2003 | EP1319768A2 Drainage channel between a wall and a slab cladding |
| 06/11/2003 | CN2555280Y Soil shovelling ring for pneumatic ram horizotally passing through prestressed concrete culvert pipe |
| 04/16/2003 | CN1411526A Headwall for drain pipe |
| 03/25/2003 | CA2255903C Composite concrete metal encased stiffeners for metal plate arch-type structures |
| 03/18/2003 | US6533498 Reinforced composite material |
| 03/05/2003 | CN1400362A Openable urban road pipe network facilities |
| 03/04/2003 | US6527474 Pavement drain |
| 02/19/2003 | EP1119663B1 Tubular structure |
| 02/19/2003 | CN1397687A Comprehensive drainage facility for road |
| 01/14/2003 | US6505996 Drainage system with unitary void-maintaining geosynthetic structure and method for constructing system |
| 12/31/2002 | US6499173 Culvert cleaning apparatus |
| 12/26/2002 | US20020197112 Structure and method for detecting an inflated state of a flexible membrane dam |
| 11/21/2002 | WO2002092945A1 Outdoor structure, method of producing snow and ice slipping covering, and snow and ice slipping covering |
| 11/05/2002 | US6474907 Environmentally compatible archway for road building |
| 10/31/2002 | US20020159833 Pavement drain |
| 10/30/2002 | EP1252393A1 Drainage system |
| 10/08/2002 | US6460213 Precast concrete structure having light weight encapsulated cores |
| 09/12/2002 | US20020127061 Headwall for drain pipe |
| 09/10/2002 | US6447206 Beaver control screen for culvert pipe |
| 09/04/2002 | EP0904465B1 Composite concrete metal encased stiffeners for metal plate arch-type structures |
| 08/15/2002 | US20020110421 Portable cofferdam and method for stabilizing the structural integrity of box culvert bridges |
| 07/23/2002 | US6422788 Headwall for drain pipe |
| 07/11/2002 | US20020090266 Beaver controlling culvert attachment |
| 07/02/2002 | US6413015 Beaver controlling culvert attachment |
| 06/20/2002 | US20020076280 Environmentally compatible archway for road building |
| 06/13/2002 | US20020069471 Culvert cleaning apparatus |
| 05/30/2002 | US20020064426 Composite concrete metal encased stiffeners for metal plate arch-type structures |
| 05/28/2002 | US6394700 Highway underdrain plastic apron endwall with anti-floatation wings |
| 04/25/2002 | DE10114053A1 System for the removal of surface water from roads has a deep bed, with infiltration surfaces filled with a filter material, to allow the collected rain water to be used for irrigation and prevent oil entering the drains |
| 04/18/2002 | US20020044842 Void-maintaining geosynthetic laminates and drainage systems |
| 01/30/2002 | CN2474577Y Preformed structural unit for side wall of culvert |
| 01/24/2002 | DE10063049A1 Laying buried pipes, e.g. for telecommunication cables, has a main ram and cutter fitted into a start shaft to cut a passage through to the end shaft, with intermediate rams between the pipe sections |
| 01/16/2002 | CN1331394A Method for structure duct in ground |
| 01/08/2002 | CA2328096C Environmentally compatible archway for road building |
| 11/20/2001 | CA2225729C Arch bridge for water crossing |
| 11/07/2001 | CN2458337Y Liner of bridges and culverts with corrugated structure |
| 10/10/2001 | EP1141494A1 Water conduit |
| 10/04/2001 | US20010026732 Apparatus for thawing frozen culverts |
| 09/05/2001 | CN1070567C Water cut-off construction of side ditch |
| 08/30/2001 | DE10015934C1 Drainagefähige Schüttungen Drainage capability beds |
| 08/22/2001 | EP1126090A2 Filtering inflow device |
| 08/16/2001 | EP1123444A2 Headwall for drain pipe |
| 08/16/2001 | CA2299742A1 An apparatus for thawing frozen culverts |
| 08/10/2001 | CA2335417A1 Void-maintaining geosynthetic laminates and drainage systems |
| 08/10/2001 | CA2335414A1 Unitary void-maintaining geosynthetic structures and drainage |
| 08/09/2001 | WO2001057317A1 Drainage system |
| 08/01/2001 | EP1119663A1 Tubular structure |
| 07/31/2001 | CA2276867C Culvert end guard |
| 07/25/2001 | EP0861358B1 A prefabricated structure for the construction of overhead or underground works |
| 07/12/2001 | WO2000065155A3 Constructive procedure for pervious stripes in highway systems and its product |
| 06/07/2001 | US20010002497 Geocomposite system for roads and bridges and construction method |