Patents
Sitemap › E02 - Hydraulic engineering; Foundations; Soil-shifting › E02B - Hydraulic engineering › E02B 13 - Irrigation ditches, i.e. gravity flow, open channel water distribution systems
Patents for E02B 13 - Irrigation ditches, i.e. gravity flow, open channel water distribution systems (1,251)
07/2000
07/13/2000DE10000025A1 Water system, especially for rain water for collection and intermediate storage, and for reducing and extended time-throttled delivery of water introduced in water system; has at least one drainage pipe
07/05/2000EP1015706A1 Apparatus for the distribution of water or other liquids
06/2000
06/07/2000CN1255574A Antiblocking method for water tube in permeable irrigation engineering
05/2000
05/04/2000WO2000006486A3 Porous medium in an integrated hydrologic circuit
04/2000
04/05/2000CN2372369Y Water flow control device for saving water and irrigating channel for paddy field
03/2000
03/29/2000CN2371227Y Concrete canal prefabricated components
02/2000
02/23/2000EP0865541A4 Agricultural drip tape
02/10/2000WO2000006486A2 Porous medium in an integrated hydrologic circuit
02/03/2000WO2000005459A1 Sliding valve system with and without operation mechanism, free of maintenance and made of plastic material
02/03/2000CA2381540A1 Sliding valve system with and without operation mechanism, free of maintenance and made of plastic material
12/1999
12/15/1999CN1047420C Stock-raising artesian well and its drainage method
12/08/1999EP0962754A1 Method and apparatus for leak detection
12/07/1999US5997213 Ditch check
12/01/1999CN1236848A Irrigation system for greenbelt
11/1999
11/30/1999US5993111 Method and system for flood irrigation
11/24/1999CN2350435Y Field ditch water retaining device
11/24/1999CN2350434Y Cylinder type surface water intaking device
11/16/1999US5984573 Process for forming watering notches in an irrigation ditch and apparatus adapted for use with the process
11/10/1999CN2348215Y Water pressure electromagnetic self-controlling valve
11/03/1999EP0917603A4 Low energy precision flooding irrigation apparatus and method
11/03/1999CN2346834Y Precast concrete canal
10/1999
10/27/1999CN1232902A Water trough of asbestos and cement
10/13/1999CN2343202Y Device for collecting and storing hillside running water
07/1999
07/28/1999CN1224330A Water level regulating device for paddy field
07/21/1999CN2329704Y Assemble U-draining device
07/13/1999US5921709 Panel ditch check for temporary erosion and sediment control
06/1999
06/29/1999US5916104 Box, an insulating system, and a ground drainage system
06/22/1999US5913635 Pipe couplings for irrigation systems
06/09/1999CN2323015Y Water gate
05/1999
05/26/1999EP0917603A1 Low energy precision flooding irrigation apparatus and method
05/26/1999CN2320656Y U-shaped hydraulic thin-shell flume
05/19/1999CN2319442Y Glass reinforced plastic anti-leakage canal
04/1999
04/28/1999CN2316340Y Dual-purpose plastic canal ridge for delivering and stopping water
04/15/1999DE19816900C1 Tilting pipe with float controller and ball valve for discharging liquid
03/1999
03/16/1999US5882141 Low energy precision flooding irrigation apparatus and method
12/1998
12/30/1998EP0887472A1 Tree planting concrete product
12/23/1998CN2301476Y Prefabricated U-concrete component with tenon-mortise joint end for canal
10/1998
10/14/1998CN2294294Y Machine for single step formation of U shaped concrete irrigation ditches
10/06/1998US5816742 Permeable conduits for disbursing fluids
10/01/1998WO1998042927A1 Trade waste diversion valve
09/1998
09/23/1998EP0866179A2 Distribution box
09/23/1998EP0865541A1 Agricultural drip tape
09/11/1998WO1998038850A1 Water level regulating device for paddy field
08/1998
08/11/1998US5791817 Ditch dam
07/1998
07/28/1998US5785454 Protective body/cover to be placed over discharge openings on pipes for the underground supply of water and air
07/08/1998CN2285791Y Clamp-opening sluice gate opening and closing device and key thereof
06/1998
06/27/1998WO1998029612A1 Tree planting concrete product
06/10/1998CN2283676Y Concrete prefab for canal
05/1998
05/22/1998WO1998021420A1 Apparatus for the distribution of water or other liquids
05/22/1998CA2271803A1 Apparatus for the distribution of water or other liquids
05/13/1998CN2281364Y Low vibration pre-constructing apparatus for U-shape concrete tank
05/13/1998CN1181441A Improved flood-proof drought resisting planting method
05/12/1998US5749672 Irrigation process
02/1998
02/25/1998CN1174270A Stock-raising artesian well and its drainage method
02/24/1998US5720575 Water control and diversion headgate and method of manufacture
02/12/1998WO1998005824A1 Low energy precision flooding irrigation apparatus and method
02/12/1998CA2262416A1 Low energy precision flooding irrigation apparatus and method
12/1997
12/02/1997US5692858 Apparatus for soil irrigation
11/1997
11/20/1997DE19619957A1 Pipes for drinking water treatment, drainage wells, irrigation or water=wheels comprising quartz sand and poly:urethane binder
11/18/1997US5688072 For below or above ground irrigation
10/1997
10/21/1997US5678606 Water collection and distribution box and method related thereto
09/1997
09/16/1997US5667336 Furrow irrigation
09/10/1997CN2262050Y Positioning automatic water supply sluice gate for paddy field
08/1997
08/06/1997EP0787865A1 Box and system for insulation and ground drainage
07/1997
07/30/1997EP0730400B1 A protective body/cover to be placed over discharge openings on pipes for the underground supply of water
07/24/1997WO1997025856A1 Drainage and/or irrigation
07/09/1997EP0783056A1 Device for dividing with control an arriving fluid flow
06/1997
06/19/1997WO1997021874A1 Agricultural drip tape
04/1997
04/22/1997US5622448 Panel ditch check for temporary erosion and sediment control
03/1997
03/19/1997CN1145574A Water management system for paddy field on hillside farm
03/18/1997US5611677 River pump device
02/1997
02/11/1997US5601381 Irrigation apparatus including pulsators
01/1997
01/15/1997CN1140011A Impervious irrigation canal with replaceable agricultural film
10/1996
10/30/1996CN1134494A Construction of drainage channel
10/22/1996US5567079 Method for the hydraulic branching of an open stream and hydraulically working channel branch
09/1996
09/11/1996EP0730400A1 A protective body/cover to be placed over discharge openings on pipes for the underground supply of water and air
09/10/1996US5553970 Water-saving irrigation device
08/1996
08/28/1996EP0727937A1 Irrigation process
08/01/1996WO1996022678A1 Water management system for paddy field on hillside farm
07/1996
07/24/1996EP0673456B1 Process for hydraulically branching an open stream and canal branch with hydraulic operation
04/1996
04/23/1996US5509449 Pressurized irrigation apparatus
02/1996
02/01/1996WO1996002126A1 Irrigation process
02/01/1996CA2171720A1 Irrigation process
09/1995
09/27/1995EP0673456A1 Process for hydraulically branching an open stream and canal branch with hydraulic operation.
09/26/1995CA2004564C Leaching system conduit with high rigidity joint
06/1995
06/14/1995CN1103691A Branching system for flow of water in open channel
05/1995
05/31/1995CN2199238Y Combined precast foundation bed for channel
05/26/1995WO1995013694A1 A protective body/cover to be placed over discharge openings on pipes for the underground supply of water and air
05/26/1995CA2175911A1 A protective body/cover to be placed over discharge openings on pipes for the underground supply of water and air
04/1995
04/25/1995US5409510 Watering gutter
04/25/1995CA2002938C Control device for underground drainage and irrigation network
03/1995
03/28/1995US5401116 Conduit for burial in the earth to disperse or gather liquids
02/1995
02/28/1995CA2014980C Irrigation and drainage method and apparatus
01/1995
01/24/1995US5383744 Subirrigation system and method
11/1994
11/23/1994EP0618883A4 Oil absorption method and apparatus utilizing a replaceable bladder.
11/22/1994US5366155 By-pass arrangement for controlling the return flow of a pilot valve connected into an irrigation network
10/1994
10/12/1994EP0618883A1 Oil absorption method and apparatus utilizing a replaceable bladder
08/1994
08/09/1994US5336017 Leaching system conduit with interlocking end joint
07/1994
07/05/1994CA1330603C Drainage system
05/1994
05/26/1994WO1994011580A1 Process for hydraulically branching an open stream and canal branch with hydraulic operation
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