| Patents for E02B 13 - Irrigation ditches, i.e. gravity flow, open channel water distribution systems (1,251) |
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| 05/23/2012 | CN102206936B Irrigation canal pipe system |
| 05/09/2012 | EP2449179A1 Corrugated leaching chambers having pillars and wide peak corrugations |
| 05/09/2012 | CN102444167A Water-cellars-containing forest fire prevention isolation belt considering fire fighting and irrigation functions |
| 05/09/2012 | CN102444107A Control gates |
| 05/03/2012 | US20120107047 Liquid run-off disposal system |
| 05/02/2012 | CN102433866A Multifunctional irrigation and drainage gate for ridge |
| 04/26/2012 | US20120097281 drainage system and a vortex brake |
| 04/25/2012 | CN202202306U 肋梁式钢筋混凝土u型渠 Ribbed reinforced concrete beam u-canal |
| 04/25/2012 | CN102425228A 多功能环保型可移动水槽 Multifunction environmentally friendly removable water tank |
| 04/24/2012 | US8162566 Drainage element with a periphery of different materials |
| 04/17/2012 | US8157475 Reinforcement liner installation mold mounted on a corrugated steel plate structure |
| 04/11/2012 | CN202187330U 一种混凝土硬化预制拼接式梯形渠槽 One kind of prefabricated concrete hardening tiled trapezoidal channeler |
| 04/11/2012 | CN102409647A 一种农村远程电控排水系统 One kind of drainage system in rural remote electric control |
| 04/05/2012 | WO2012044270A2 Grey water filtering system |
| 04/04/2012 | CN202181546U 一种手动式灌溉渠道分水闸门 A manual irrigation channel diversion gate |
| 04/04/2012 | CN202181545U 一种混凝土硬化预制承插式u型渠槽 One kind of prefabricated concrete hardening socket type u-channeler |
| 03/28/2012 | CN102392429A Headwork stratified water intaking method for Yellow River diversion irrigation district |
| 03/06/2012 | US8128316 Method of restoration of a highly saline lake |
| 02/29/2012 | CN202152455U 灌溉渠挡土墙防倒灌排水管 Anti-intrusion drain irrigation canal retaining wall |
| 02/22/2012 | CN102359145A Baffled water holding garden system for treating rainwater collected in urban residential area |
| 02/22/2012 | CN102359095A Water purifying gate used for field irrigation and provided with environmentally-friendly filter element and heavy metal sensor |
| 02/22/2012 | CN102359094A Water saving gate used for supplying power to flow sensor and provided with wind energy generating system |
| 02/22/2012 | CN102359093A Water saving gate used for supplying power to flow sensor and provided with wind energy generating system |
| 02/15/2012 | CN102352618A Rice planting irrigation ditch gate |
| 02/08/2012 | CN102345283A Automatic water discharging device |
| 02/02/2012 | US20120024766 Wastewater Re-Use Systems |
| 01/31/2012 | US8104993 Irrigation zone time control |
| 01/25/2012 | CN202124844U Trickle irrigation drainage canal |
| 01/18/2012 | CN102322045A Water-saving ecological sluice in irrigation area |
| 01/04/2012 | CN202099791U Forming integrative machine for disk-type canal |
| 01/04/2012 | CN202099787U Channel pouring machine |
| 12/28/2011 | CN102297163A 一种用于u形渠的抽水装置和方法 A u-shaped drainage pumping apparatus and method for |
| 12/21/2011 | CN202081411U 一种新型的排水管 A new drain |
| 12/15/2011 | US20110305513 Riser Assembly for Water Storage Chambers |
| 12/14/2011 | CN202073079U 分水节制闸门 Watershed sluice gate |
| 12/14/2011 | CN202073078U 农田口子整体预制构件 Overall prefabricated farmland hole |
| 12/14/2011 | CN102277864A 农田灌溉渠道的清理装置 Irrigation channel cleaning device |
| 11/30/2011 | CN202056362U 一种自锁逆止式排水器 A self-locking type drainage backstop |
| 11/30/2011 | CN202055235U 农村简易小型排水闸门装置 Small rural simple drainage gate device |
| 11/16/2011 | CN202039334U Valve for farmland water-diversion well |
| 11/16/2011 | CN202039333U Water-measuring channel pipe for irrigation |
| 11/16/2011 | CN102242543A Water conservancy system for preventing and treating soil secondary salinization in greenhouses in coastal region |
| 10/26/2011 | CN101649619B Large-span efficient multifunctional concrete sloping surface masonry machine |
| 10/05/2011 | CN202000324U Wind-light complementary gate control system |
| 10/05/2011 | CN202000323U Drain gate for irrigation channel |
| 10/05/2011 | CN102206936A Irrigation canal pipe system |
| 09/29/2011 | US20110236133 Modular and easy to assemble grilled cover piece for drainage channels |
| 09/21/2011 | CN201984623U 灌区闸门电源遥控装置 Irrigation gate power remote devices |
| 09/14/2011 | CN102180619A Stone-plastic composite material and U-shaped anti-seepage canal made of stone-plastic composite material |
| 09/14/2011 | CN101260661B Automatic irrigation and drainage method and system for agricultural land |
| 09/07/2011 | CN201962656U 一种风能太阳能发电排灌装置 A wind energy solar power irrigation equipment |
| 09/07/2011 | CN201962655U 一种用于坡耕地灌溉系统的谷坊排水结构 Gufang drainage structure for sloping farmland irrigation systems |
| 09/07/2011 | CN102174805A Composite seepage-proof plate of irrigation ditch |
| 09/07/2011 | CN101213925B Drought resisting method for man-made forest construction and foster |
| 08/31/2011 | CN101881034B Milling and planing system |
| 08/30/2011 | US8007201 Septic system |
| 08/23/2011 | US8002497 Coupler for leaching chamber systems |
| 08/18/2011 | US20110200391 Stormwater containment assembly and associated end section |
| 08/10/2011 | CN201925535U 大型液压变速浮箱拍门 Large hydraulic transmission pontoon shoot the door |
| 08/10/2011 | CN101775791B Round middle ring water and sand separating device |
| 08/09/2011 | US7993076 Bluff penetrating outfall drainage system |
| 08/03/2011 | CN201915374U 一种水流转向闸 One kind of flow steering brake |
| 08/03/2011 | CN201915360U 小型量水闸门 Small amounts of water gates |
| 07/28/2011 | US20110182667 Subsurface irrigation system |
| 07/21/2011 | US20110174706 Systems and methods for water harvesting and recycling |
| 07/20/2011 | CN101392520B Water channel plastic tube system for irrigation |
| 07/14/2011 | US20110170952 Irrigation Methods and Systems |
| 07/13/2011 | CN102121449A Hydrodynamic machine, and using method and application thereof |
| 07/06/2011 | CN102116015A One-way water-permeable composite geomembrane |
| 06/29/2011 | CN201883419U Fastener-type U-groove concrete prefabricated part |
| 06/23/2011 | WO2011075690A1 Pop-up irrigation device for use with low-pressure irrigation systems |
| 06/22/2011 | CN201874024U Ditching machine for digging trapezoidal ditch |
| 06/22/2011 | CN201873976U Bamboo-plastic seepage-proof channel and bamboo-plastic seepage-proof chute thereof |
| 06/22/2011 | CN201873975U Combined type pool and field water channel capable of saving farmland |
| 06/16/2011 | WO2011071924A1 Modular, scalable liquid management system |
| 06/16/2011 | CA2689700A1 Diversion conduit |
| 06/15/2011 | CN102095004A Large-sized hydraulic speed change floating box flap valve |
| 06/15/2011 | CN102094409A Method and device for safety identification of canal structures in irrigation areas |
| 06/09/2011 | WO2011068294A1 Open channel having a draining space for ultra-soft ground |
| 06/07/2011 | CA2732245A1 Modular, scalable liquid management system |
| 06/01/2011 | CN102080367A Construction method of ecologically-friendly park for systematically controlling agricultural pollution |
| 05/25/2011 | CN201843125U Channel structure for collecting slope subsurface flow |
| 05/11/2011 | CN201826288U Ecological water circulating system of lawn |
| 05/11/2011 | CN101418564B Stable water transfer channel |
| 05/04/2011 | CN101713184B Channel seepage-guiding and non-return system |
| 05/03/2011 | US7937187 Computer controlled fertigation system and method |
| 04/27/2011 | CN201809756U Farmland water distribution well valve |
| 04/27/2011 | CN201809755U Groove type automatic device for farmland irrigation and drainage as well as flood control |
| 04/27/2011 | CN102031768A Novel farmland waterlogging prevention and treatment device and applied technology thereof |
| 04/21/2011 | US20110091281 Drainage system, apparatus, and method |
| 04/20/2011 | CN102026540A Flexible drainage cell |
| 04/20/2011 | CN101705672B Method for designing ecological pollution reducing drainage channel |
| 04/14/2011 | WO2011041850A1 Water diversion system |
| 04/13/2011 | EP2307624A2 Automatic and rapid opening flush system for full-tank discharge |
| 04/13/2011 | CN102011381A Bamboo-plastic leakage-proof canal and manufacturing method thereof |
| 03/30/2011 | CN201778320U Cleaning device for farm irrigation ditch |
| 03/29/2011 | US7914231 Leaching chamber having a diagonally ribbed top |
| 03/24/2011 | US20110070027 System for draining land areas through the use of a venturi apparatus from a permeable catch basin |
| 03/23/2011 | EP2296455A1 Flexible drainage cell |
| 03/23/2011 | CN201771178U Construction tool for in-situ casting cement closed conduit |