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Class Information
Number: 405/38
Name: Hydraulic and earth engineering > Drainage or irrigation > Including subsurface moisture barrier
Description: Method or apparatus wherein an artificial layer of water impermeable material is provided below the soil surface and is positioned to prevent the passage of water from a region above the layer to a region therebelow.

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8449219 Water-storage and water-purification system May. 28, 2013
8348548 Methods and systems to maintain accessibility and integrity of equipment contained in underground housings Jan. 8, 2013
8256989 Water-storage and water-purification system Sep. 4, 2012
8240950 Underground water retention system and associated methods Aug. 14, 2012
8219254 Adaptive control for irrigation system Jul. 10, 2012
8192109 Subsurface irrigation system Jun. 5, 2012
8152997 Stormwater control system and related method Apr. 10, 2012
8083436 Methods and systems to maintain accessibility and integrity of equipment contained in underground housings Dec. 27, 2011
7988851 Stormwater control system and related method Aug. 2, 2011
7810291 Connectable drainage device Oct. 12, 2010
7780374 Methods and systems to maintain accessibility and integrity of equipment contained in underground housings Aug. 24, 2010
7743696 Root and water management system for potted plants Jun. 29, 2010
7722288 Method of installing a synthetic grass system May. 25, 2010
7585555 Synthetic-grass flooring and method for laying same Sep. 8, 2009
7287932 Ballasting system for on-site sewage treatment and disposal system Oct. 30, 2007
7144609 Artificial turf system Dec. 5, 2006
7132467 Stabilization of polyolefins in permanent contact with chlorinated water Nov. 7, 2006
7008137 Cover for a drainage arrangement and a method of producing such an arrangement Mar. 7, 2006
6988852 Drainage element for walls and septic tank systems Jan. 24, 2006
6877932 Drainage system and method for artificial grass using spacing grid Apr. 12, 2005
6857818 Drainage element for walls and septic tank systems Feb. 22, 2005
6712552 Geosynthetic material irrigation system Mar. 30, 2004
6691472 Foundation wall protector Feb. 17, 2004
6672016 Wall and sub-floor water drain barrier panel for basement water-control systems Jan. 6, 2004
6634144 Home waterproofing system Oct. 21, 2003
6558080 Methods and compact apparatus for covering landfill May. 6, 2003
6539681 Spacer plate for a hollow floor and a hollow floor made therewith Apr. 1, 2003
6467991 Process and material for preventing contamination and erosion of golf course sand traps Oct. 22, 2002
6431793 Containment system for spills Aug. 13, 2002
6372310 Combined and stabilized turf for an athletic field Apr. 16, 2002
6309139 Manhole with extension wings Oct. 30, 2001
6287049 Layered foundation for play surface Sep. 11, 2001
6242062 Combined turf Jun. 5, 2001
6238137 Containment system for spills May. 29, 2001
6227763 Waterway May. 8, 2001
6221445 Composite artificial turf structure with shock absorption and drainage Apr. 24, 2001
6146051 Paving system for spillage and flood management Nov. 14, 2000
5938372 Subsurface irrigation apparatus and method Aug. 17, 1999
5915878 Silt fence machine Jun. 29, 1999
5860772 High shear strength clay liner, method and apparatus for its production Jan. 19, 1999
5836115 Foundation waterproofing and drainage system Nov. 17, 1998
5752784 Low profile drainage network for athletic field drainage system May. 19, 1998
5662983 Stabilized containment facility liner Sep. 2, 1997
5529438 Geosynthetic clay liner with modified edges for improved sealing Jun. 25, 1996
5489462 Distance plate building component with a protective, ventilating, heat-insulating and drainage function Feb. 6, 1996
5460867 Separation layer for laying grass-surfaces on sand-and/or gravel base Oct. 24, 1995
5431553 Manhole seal molding apparatus Jul. 11, 1995
5428877 Sealing sheeting of swellable clay impervious to water and/or oil Jul. 4, 1995
5429453 Means for resurfacing tennis courts and the like Jul. 4, 1995
5374138 Subsurface irrigation apparatus and method Dec. 20, 1994

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