| Patents for E02B 13 - Irrigation ditches, i.e. gravity flow, open channel water distribution systems (1,251) |
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| 02/06/2013 | CN102912765A High polymer composite material water channel |
| 02/05/2013 | US8366346 Storm water chamber with floor liner |
| 01/30/2013 | CN202706001U Movable sluice gate of irrigation ditch |
| 01/30/2013 | CN202706000U Flip type surface water automatic drainage device |
| 01/30/2013 | CN202705999U A concrete gate valve |
| 01/30/2013 | CN202705998U Polyurethane and formic ether compound geotechnical gasket |
| 01/30/2013 | CN102900060A Geo-cell type ecological ditch |
| 01/23/2013 | CN202688974U Automatic adjusting device of rice field water volume |
| 01/23/2013 | CN202688973U Elliptical water retaining device for farmland irrigation |
| 01/23/2013 | CN102888830A 塑料水渠及其施工方法 Plastic drains and construction methods |
| 01/16/2013 | CN202672152U Propeller in full-automatic water-saving anti-seepage canal cast-in-situ forming machine |
| 01/16/2013 | CN202672121U Setting members for field matching building and water discharge gate, recession gate, restraining gate, sluice gate, culvert, and inverted siphon constructed by use of the setting members |
| 01/16/2013 | CN202672101U Roller shutter gate |
| 01/10/2013 | US20130008791 Method and system for irrigation |
| 01/09/2013 | CN202658588U Water conservation pipeline |
| 01/03/2013 | WO2013002527A2 Prefabricated drain structure |
| 01/03/2013 | WO2013002095A1 Method for designing corrugated steel sheet and corrugated steel sheet flume |
| 01/02/2013 | CN202649741U Low power consumption wireless gate controller |
| 01/02/2013 | CN202644497U Paddy field tubular irrigation ditch |
| 01/02/2013 | CN102852120A Canal lining |
| 12/26/2012 | CN102839637A Flexible channel |
| 12/26/2012 | CN102835294A Field irrigation system with integrated inflowing and draining water pipe |
| 12/19/2012 | CN202610777U Paddy field water channel sluice gate |
| 12/12/2012 | CN202595712U Semi-circular conjoined gate |
| 12/12/2012 | CN102812843A Comprehensive matching technology for constructing road shelter forests in heavy saline-alkali soil sections of coastal areas |
| 12/05/2012 | CN202577253U Multifunctional drainage and irrigation sluice for field ridge |
| 12/05/2012 | CN102808401A Double-rope-wheel-driven anti-locking opening and closing device for arc gate of irrigation ditch |
| 12/05/2012 | CN102808400A Double rope wheel driven anti-blocking irrigation ditch flat door opening and closing device |
| 11/28/2012 | CN202559323U Self-anchored pipe-gate integrated sluice gate |
| 11/28/2012 | CN202559322U Combined type water guide groove |
| 11/21/2012 | CN202544397U Channel top-sealing formation sliding die |
| 11/06/2012 | US8302463 Loss detection system for open channel networks |
| 10/31/2012 | CN202509474U Arc-bottom U-shaped water tank |
| 10/31/2012 | CN101864816B Stepped solar energy saving greenhouse capable of irrigating by natural rainfall and taking mountain massif as rear wall |
| 10/17/2012 | EP2510155A1 Modular, scalable liquid management system |
| 10/17/2012 | CN202492832U Steering sluice gate of water channel |
| 10/17/2012 | CN102733392A Propeller in full automatic water-saving anti-seepage channel cast-in-situ forming machine |
| 10/10/2012 | CN202482838U Farmland water gate |
| 10/10/2012 | CN102080367B Construction method of ecologically-friendly park for systematically controlling agricultural pollution |
| 10/03/2012 | CN202466546U Ecological irrigation and drainage channel |
| 10/03/2012 | CN202466545U Ditch between greenhouses |
| 10/03/2012 | CN202466544U Irrigation and drainage ditch in coastal reclamation area |
| 09/30/2012 | CA2735756A1 Weed and trash screening apparatus for irrigation systems |
| 09/26/2012 | CN202450503U Water conservation pipeline |
| 09/26/2012 | CN102691281A Compound water conservancy hydropower station with innovation mechanism |
| 09/19/2012 | CN202440808U Cast-iron gate |
| 09/19/2012 | CN202440807U Water-saving gate equipped with solar energy photovoltaic power generation system supplying power to flow sensor |
| 09/19/2012 | CN202440806U Water delivery channel for water-saving irrigation |
| 09/19/2012 | CN202440805U Steel molding plate for irrigation and water conservancy concrete ditches |
| 09/19/2012 | CN102677641A Semicircular integrated gate |
| 09/12/2012 | CN202430696U Farmland water-level adjusting and controlling device |
| 09/12/2012 | CN202430695U Hollow drainage ridge of flatland strip field |
| 09/12/2012 | CN202430694U Hollow drainage ridge with ridge water gates |
| 09/05/2012 | CN202416279U Water purification gate used for farmland irrigation and provided with environmental-friendly filter element and chemical sensors |
| 09/05/2012 | CN202416278U Water-saving gate using wind power generation system to supply power to flow sensor |
| 09/05/2012 | CN202416277U Nitrogen and phosphorus intercepting submerged dam for ecological ditch |
| 08/29/2012 | CN202401561U Multifunctional environment-friendly movable water channel |
| 08/29/2012 | CN202401438U Measuring flume integrating functions of measurement and channel flow adjustment |
| 08/22/2012 | CN202390808U Plane sliding gate |
| 08/15/2012 | CN102635101A Orifice discharge control device and working process thereof |
| 08/15/2012 | CN102635095A Remote control water metering gate |
| 08/08/2012 | CN202369975U Ridge crossing type drain pipe |
| 08/07/2012 | US8235627 System and method for detecting and remediating contamination |
| 08/02/2012 | WO2012100572A1 Large-scale hydraulic variable-speed floating box flap valve |
| 08/02/2012 | US20120195686 Drywell retrofit sump insert for storm water treatment |
| 08/01/2012 | CN102619204A Multiple field matched buildings formed by combining multiple setting members with relevant members thereof |
| 08/01/2012 | CN101935996B Method and device for automatically controlling water levels of multiple channel sections |
| 07/18/2012 | CN202337971U 可调式自动止回拍门 Adjustable automatic non-return flap valve |
| 07/18/2012 | CN102587337A Irrigation-drainage ditch slope revetment device for coastal reclamation areas |
| 07/17/2012 | US8221029 Water drainage and harvesting system for an artificial turf environment |
| 07/11/2012 | EP2473823A1 A method of determining surface level, and a soil moisture sensor |
| 07/11/2012 | CN202324061U 一种处理城市居民小区收集雨水的折流式持水花园系统 A process of urban residential area to collect rainwater Baffled holding water garden systems |
| 07/11/2012 | CN202323906U 装配式涵洞构件 Fabricated culvert member |
| 07/11/2012 | CN202323905U Wing-column-shaped water measuring groove of rectangular channel |
| 07/11/2012 | CN202323877U 一种无线闸门量水装置 A wireless device Gate Water |
| 07/11/2012 | CN102575950A Flow meter assembly, gate assemblies and methods of flow measurement |
| 07/11/2012 | CN102561281A Irrigation and drainage canal in coastal reclamation area |
| 07/11/2012 | CN102561275A Flap type rope controlled gate |
| 07/11/2012 | CN102557253A Organism-strengthened pollution reducing ditch |
| 07/04/2012 | CN202298581U 一种农业灌渠水量表 An agricultural irrigation canal water table |
| 07/04/2012 | CN102535413A Farmland gate |
| 07/04/2012 | CN102535412A Inter-greenhouse ditch |
| 07/04/2012 | CN102116015B One-way water-permeable composite geomembrane |
| 06/27/2012 | EP2467680A1 Flow meter assembly, gate assemblies and methods of flow measurement |
| 06/27/2012 | CN102518095A Measuring flume integrating functions of measuring and adjusting channel flow |
| 06/27/2012 | CN102515354A Nitrogen phosphor interception undercurrent dam |
| 06/27/2012 | CN102031768B Novel farmland waterlogging prevention and treatment device and applied technology thereof |
| 06/21/2012 | US20120155963 Underground infiltration tank module |
| 06/20/2012 | CN102505674A Clear water gate with environmentally-friendly filter element and chemical sensors for field irrigation |
| 06/20/2012 | CN102505673A Hollow drainage field ridge with field ridge sluice gate |
| 06/20/2012 | CN101787685B Pneumatic type gate opening/closing system |
| 06/13/2012 | CN202273202U 通道式吊装启闭闸门 Channel-type lifting Gate |
| 06/12/2012 | US8200368 Automatically adjusting irrigation controller with temperature and rainfall sensor |
| 06/06/2012 | CN202265810U 一种新型水利管道 A new water conservancy pipeline |
| 06/06/2012 | CN202265802U 一种侧开式渠道闸门 A lateral channels open gate |
| 06/05/2012 | US8192110 Yard storm drain emitter |
| 05/30/2012 | CN202247824U Ditch sluice gate for planting and irrigating rice |
| 05/30/2012 | CN202247823U Water valve for canal |
| 05/30/2012 | CN102483342A 一种确定地面标高的方法和土壤湿度感测器 A method of determining a method ground elevation and soil moisture sensor |
| 05/23/2012 | CN202227326U Layered canal head gate |