Patents
Sitemap › E03 - Water supply; Sewerage › E03F - Sewers; Cesspools › E03F 1 - Methods, systems, or installations for draining-off sewage or storm water
Patents for E03F 1 - Methods, systems, or installations for draining-off sewage or storm water (3,565)
06/2000
06/20/2000US6076993 Leaching chamber
06/08/2000DE19852849A1 Maintaining drainage in waste water lines during repairs involves sucking out waste water from waste water line via above ground end of auxiliary line during repair work in main channel
06/07/2000CN1053248C Vacuum sewerage system
05/2000
05/09/2000US6059964 Collapsible catch basin grate filter assembly
05/04/2000WO2000024977A1 Water purification arrangement for drain water catch basins
05/04/2000WO2000006486A3 Porous medium in an integrated hydrologic circuit
04/2000
04/26/2000EP0994989A1 Vacuum-operated sewage system and air inlet valve
04/25/2000US6053661 Variable fitting foam blocks as aggregate
04/18/2000US6049942 Apparatus for rejuvenating a drainfield or drywell
04/12/2000EP0992633A1 Evacuation system provided with a shut-off valve, and process for maintaining in operating conditions a shut-off valve in a vaccum evacuation system
04/05/2000EP0990743A2 Internal breathing for vacuum interface valve of vacuum sewage system
04/04/2000US6045691 Sewer eco-collar for opening with covers
03/2000
03/22/2000EP0986679A1 Toilet system with vacuum suction
03/21/2000US6038710 Sewage removal system
03/08/2000EP0983403A1 On-site sewage treatment and disposal system
02/2000
02/17/2000WO2000007878A1 Vacuum toilet system for a vehicle
02/17/2000DE19834857A1 Rain water drainage for road has a soak away under the road surface and filled with a granular material to hold water and to provide mechanical support for the road
02/17/2000CA2336485A1 Vacuum toilet system for a vehicle
02/16/2000CN1244616A Sewer system
02/10/2000WO2000006486A2 Porous medium in an integrated hydrologic circuit
02/10/2000DE19834537A1 Vakuumtoilettensystem für ein Fahrzeug A vacuum toilet system for a vehicle
02/09/2000EP0978599A1 Sewage disposal process at low depth working with a single vacuum source
01/2000
01/25/2000US6017166 Catch basin guard and filter
01/20/2000DE19828209C1 Method of drain water feed through pressure pipe circuit
01/13/2000DE19829391A1 Vacuum or sub-atmospheric pressure suction device
01/11/2000US6012871 Septic tank system and distribution device suitable for use in sloping terrain
01/05/2000EP0969153A2 Sewer system
01/04/2000US6010622 Environmental filter
01/01/2000CA2275369A1 Sewer system
12/1999
12/29/1999EP0966576A1 Shaft cover
12/29/1999EP0966571A1 Subsurface fluid drainage and storage systems
12/28/1999US6006373 System for collecting and disposing of aircraft galley waste
12/22/1999CN2355014Y Water penetrative flexible pipe
12/10/1999CA2240080A1 Snow disposal system
12/09/1999DE19824456A1 Drainage unit to take off surface water after heavy rainfall
11/1999
11/25/1999WO1999060212A1 Water flow control system
11/25/1999WO1999059397A1 Water flow control system
11/25/1999CA2332602A1 Water flow control system
11/25/1999CA2332569A1 Water flow control system
11/24/1999CN1236413A Method and device for operating the water flushing and the discharging valve in a toilet or the like connected to a vacuum sewer
11/18/1999DE19921197A1 Removal of waste material from galley or toilet in aircraft
11/16/1999US5985157 Filter device
11/16/1999US5984574 Drip field manifold system
11/16/1999US5983414 Electrical control device
11/16/1999US5983413 High performance flush toilet
11/11/1999WO1999057386A1 Vacuum-operated sewage system and air inlet valve
11/10/1999EP0954649A1 Vacuum toilet
11/09/1999US5979486 Internal breathing for vacuum interface valve of vacuum sewage system
11/03/1999EP0953691A2 Infiltration pipe
10/1999
10/26/1999US5971438 Mobile vehicle sewage removal system
10/26/1999US5971005 Vacuum adaptor for recreation vehicle toilet system with sliding cassette holding tank
10/21/1999WO1999053149A1 Toilet apparatus
10/20/1999EP0950140A1 A device in a waste water system and a method for transporting waste water
10/20/1999CN1232516A Filter element
10/13/1999EP0948682A1 Device for collecting, temporarily storing and draining off rainwater
10/09/1999CA2234373A1 Drain channel system
10/05/1999US5960829 No drip vacuum tight connector
09/1999
09/28/1999US5958226 Storm drain filter with removable debris tray
09/28/1999US5956780 Vacuum flush waste disposal system for railcars
09/28/1999CA2148235C Vacuum toilet discharge valve
09/21/1999US5954952 Stormwater catch basin filter assembly
09/19/1999CA2265361A1 Telescopic vent pipe for waste liquids
09/14/1999US5951203 Leaching field construction
09/07/1999US5947156 Holding tank having waste evacuation device
09/07/1999US5947146 Low volume vacuum toilet assembly
09/01/1999EP0938615A1 Ground surface integrated water sorage, water conducting and water treatment system with integrateable ground and water protection
08/1999
08/26/1999WO1999042405A1 Curb-inlet storm drain systems for filtering trash and hydrocarbons
08/26/1999DE19806857A1 Vacuum or sub-atmospheric pressure suction device
08/26/1999DE19806421A1 Method for minimizing water quantity being discharged to water treatment plant
08/25/1999EP0937830A2 Vacuum or low-pressure suction system
08/18/1999EP0935699A1 Gross pollution filter
08/17/1999US5937888 Toilet waste collection system for campgrounds
08/17/1999CA2132620C Portable vacuum toilet system
08/05/1999DE19856548A1 New process to remove liquid subsoil contaminants
08/03/1999US5931642 Plastic combined vacuum and holding tank
07/1999
07/28/1999EP0931880A1 Method of calculating the drainage from an area
07/28/1999EP0931200A1 Waste water disposal system
07/21/1999EP0675987B1 Suction device
07/13/1999US5921711 Subsurface fluid distribution apparatus and method
07/06/1999US5918853 Vacuum valve control device and vacuum valve
07/06/1999US5918325 Flush toilet bowl
07/01/1999WO1999032816A1 Dual backflow check valve
06/1999
06/30/1999EP0925405A1 Filter element
06/23/1999CN1043800C 真空排放系统 Vacuum Release Systems
06/10/1999DE19844354A1 Septic tank system for collecting effluent and sewage from caravans and motor homes
06/08/1999US5909982 Large-depth underground drainage facility and method of running same
06/08/1999US5909968 Vacuum toilet unit
05/1999
05/26/1999EP0917606A1 Method and device for operating the water flushing and the discharge valve in a toilet or the like connected to a vacuum sewer
05/25/1999CA2048664C Vacuum drainage system
05/19/1999EP0858538A4 Storm water filter arrangement
05/12/1999EP0824621A4 Vacuum sewer system
04/1999
04/27/1999US5897777 Waste water treatment system
04/21/1999EP0909140A2 Device for treatment of possibly contaminated sludge occurring in sanitary facilities
04/15/1999WO1998055706A9 Toilet system with vacuum suction
04/14/1999EP0882161A4 Stormwater sediment and litter trap
04/08/1999WO1998056997A9 Method and device for operating the water flushing and the discharge valve in a toilet or the like connected to a vacuum sewer
04/06/1999US5890838 Storm water dispensing system having multiple arches
04/06/1999US5890837 Multiple compartment drainage conduit with diverters
04/01/1999WO1998053147A9 Leaching field construction
03/1999
03/24/1999CN1211501A Laminated structure article
1 ... 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36