| Patents for E02B 11 - Drainage of soil, e.g. for agricultural purposes (2,085) |
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| 08/06/2009 | US20090196691 Drain board installing device without anchor plate |
| 08/05/2009 | CN101498127A Water drainage member having novel core plate |
| 08/05/2009 | CN101496969A Ventilated anti-blocking composite filter tube structure and method for banding the same |
| 07/28/2009 | US7566188 Method and device for inserting a drainage wick |
| 07/23/2009 | US20090185862 Flood control system |
| 07/22/2009 | CN201276695Y Screw type trenching machine |
| 07/16/2009 | DE102007056765B3 Entwässerungsmatte Drainage mat |
| 07/08/2009 | CN100510272C Stage and step dynamic control agricultural field drainage design method |
| 07/02/2009 | US20090169303 Subsurface drainage system and drain structure therefor |
| 06/30/2009 | CA2530554C Groundwater control system with purity sensor and method |
| 06/18/2009 | WO2009075587A1 Drainage system and method for installation of drainage system |
| 06/18/2009 | CA2708831A1 Drainage system and method for installation of drainage system |
| 06/11/2009 | CA2632959A1 Transport corridor infiltration system |
| 05/28/2009 | WO2006055407A3 Sewage effluent distribution means |
| 05/27/2009 | EP2063027A2 Drainage mat |
| 05/27/2009 | CN100491100C Method for manufacturing water drainage from recycled plastic and drainage/irrigation elements from recycled plastics |
| 05/20/2009 | CN201241323Y Outside cable ditch water discharge structure |
| 05/19/2009 | US7534070 Water collection and distribution system for yard maintenance |
| 05/14/2009 | WO2009060228A1 A method and device for dewatering and, drying a wet mineral concentrate |
| 05/14/2009 | US20090123232 Drainage element with a periphery of different materials |
| 05/06/2009 | CN100485131C Control case for controlling water drainage and pollution discharge in farmland and automatic control system for water in farmland |
| 04/30/2009 | WO2006138060A3 Drain field systems and methods for implementing same |
| 04/29/2009 | CN201228354Y Facilities for agricultural land storm drainage and drought control |
| 04/25/2009 | CA2607716A1 Method and system for the drainage of iron ochre, and their use |
| 04/23/2009 | DE202009000728U1 Schutzvorrichtung für Drainagerohre Protection device for drainage pipes |
| 04/16/2009 | WO2008051553A3 Drainage system for synthetic grass system, method of installing a synthetic grass system and business method of providing a synthetic grass system |
| 04/14/2009 | US7517172 Subsurface fluid distribution apparatus |
| 04/09/2009 | WO2009045516A1 Modular synthetic grass turf assembly |
| 04/09/2009 | US20090092445 Apparatus for making drainage element with a periphery of different materials |
| 04/09/2009 | CA2702130A1 Tile for synthetic grass system |
| 04/01/2009 | CN201214783Y Ecological protecting wall of elevated plain pre-dam |
| 03/26/2009 | US20090080976 Lightweight aggregate unit and method of manufacture |
| 03/25/2009 | CN201212590Y Plastic three-dimensional composite permeable tube |
| 03/25/2009 | CN101392519A Agricultural land concealed pipe water level water quality co-controlling drainage |
| 03/19/2009 | WO2009033354A1 Penetration and convection pipe device for drainage and irrigation |
| 03/19/2009 | US20090074512 Drainage element |
| 03/17/2009 | US7503726 Subsurface drainage system and drain structure therefor |
| 03/17/2009 | CA2457135C A structural module |
| 03/12/2009 | US20090067928 Septic system |
| 03/11/2009 | CN101379941A Method for increasing big tree transplanting survival rate using flexible porous tube |
| 03/10/2009 | US7500805 Low-nest height thermoplastic leaching chamber |
| 03/10/2009 | US7500492 Device for disbursing underground a liquid discharged from a sump pump |
| 02/25/2009 | CN101372832A Water injection well |
| 02/25/2009 | CN101372831A Method for constructing water injection well |
| 02/18/2009 | CN201195836Y High-strength grille type plastic foramen magnum water penetrating cage |
| 02/17/2009 | US7491019 Erosion prevention system and method of use |
| 02/17/2009 | US7491015 Outwardly dished end plate for stormwater chamber |
| 02/17/2009 | US7490630 Pipe system |
| 02/11/2009 | CN201193537Y Water drain plate |
| 02/11/2009 | CN100460600C Blowing-filling sea-mud solidification construction method in changing coast into earth |
| 02/05/2009 | WO2009016854A1 Method for preventing collapse of dike |
| 02/05/2009 | WO2008139430A3 Drainage system for aerated heap leaching comprising perforated flat tubes |
| 02/05/2009 | US20090032791 High Impact Resistant Barrier/Fence |
| 01/28/2009 | CN201187050Y Silt seepage and drainage apparatus |
| 01/28/2009 | CN101353892A Three-dimensional space water drainage method and structure of gravitational field |
| 01/28/2009 | CN101353884A Well-digging type ground water recharge and flood control discharge method |
| 01/27/2009 | CA2535015C Faceted end cap for leaching chamber |
| 01/13/2009 | US7476060 Bulk material handling system and portable loading apparatus thereof |
| 01/06/2009 | US7473055 Water retention system |
| 01/06/2009 | CA2303658C Storm or waste water chamber featuring strain relief notches for improved flexibility and contouring the chamber |
| 12/31/2008 | EP2007949A1 Dewatering and/or drainage device |
| 12/31/2008 | CN201172813Y Dual chamber water drainage and sewage treating tube |
| 12/31/2008 | CN201171302Y Double irrigation tube trace filtration irrigation device |
| 12/24/2008 | DE102004027216B4 Spülschachtkombination für Dränageleitungen zum Dränageneubau oder zum nachträglichen Einbau Spülschachtkombination for drainpipes to Dränageneubau or for retrofitting |
| 12/17/2008 | CN101324084A Silo bottom rectifying energy dissipator |
| 12/16/2008 | US7465122 Leaching chamber having high leaching area to weight ratio |
| 12/11/2008 | DE102004022172B4 Gestelzter, stehender Spülschacht zur Entschlammung des äusseren Dränagebereichs Stilted, standing culvert for desludging of the outer Dränagebereichs |
| 12/04/2008 | US20080298897 Enhanced soaker hose |
| 12/04/2008 | US20080298896 Method and Device for Waterproofing and Draining Off Infliltrated Water in Hydraulic Structures |
| 12/04/2008 | US20080298895 Connection structure of plate-type vertical drain and circular horizontal drainpipe and method of constructing horizontal drain layer in soft ground using the same |
| 12/03/2008 | CN201159341Y Double-wall corrugated pipe for drainage |
| 12/03/2008 | CN101314948A Three-dimensional water discharge coupling button apparatus |
| 11/27/2008 | WO2007092828A3 Water drain tank or channel module |
| 11/20/2008 | WO2008138218A1 Water draining method and the draining pipe therefore |
| 11/19/2008 | CN101307596A Large medium river course compound platform surface source control and purification system |
| 11/19/2008 | CN101305673A Process for planting jute in alkali land |
| 11/19/2008 | CN100434599C Method of making a sloted wall in ground and device therefor |
| 11/13/2008 | DE20321648U1 Drainage-Tank mit Spülrohr Drainage tank flush pipe |
| 11/12/2008 | CN201148611Y Water drain plate |
| 11/12/2008 | CN201148610Y Water storing and draining plate |
| 11/04/2008 | CA2525638C Drainage member with expansion zones |
| 10/30/2008 | US20080267709 Method and apparatus for coupling drainage units |
| 10/23/2008 | WO2008128156A1 Lighweight aggregate unit and method of manufacture |
| 10/23/2008 | US20080260463 Fabric structure for water and soil conservation and manufacturing apparatus for the same |
| 10/22/2008 | EP1983110A2 Drainage pipe for the catchment and return of sea water |
| 10/15/2008 | CN101283656A Shallow water level double salt-affected soil raw soil planting and greening method |
| 10/09/2008 | WO2008121890A1 Subsurface fluid distribution apparatus |
| 10/09/2008 | CA2719949A1 Subsurface fluid distribution apparatus |
| 10/02/2008 | US20080240859 Subsurface fluid distribution apparatus |
| 09/18/2008 | US20080226394 Leaching chamber having a diagonally ribbed top |
| 09/12/2008 | WO2008052224A3 Solar poly farm for solar power generation and agriculture |
| 09/11/2008 | US20080219770 Drainage system for synthetic grass system, method of installing a synthetic grass system and business method of providing a synthetic grass system |
| 09/10/2008 | CN101260661A Automatic irrigation and drainage method and system for agricultural land |
| 09/02/2008 | US7419333 Drainage element |
| 09/02/2008 | US7419332 Leaching chamber with strengthened dome end |
| 09/02/2008 | US7419331 Leaching chamber with varying slot opening height |
| 08/28/2008 | US20080205987 Method and apparatus for controlling drainage and irrigation of fields |
| 08/26/2008 | CA2286336C Subsurface fluid drainage and storage systems |
| 08/19/2008 | US7413382 Coupler for leaching chamber systems |
| 08/19/2008 | US7413380 Golf course turf conditioning control system and method |