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Class Information
Number: 405/80
Name: Hydraulic and earth engineering > Fluid control, treatment, or containment > Flow control
Description: Method or apparatus for conducting a fluid through a predetermined path or for regulating or modifying the fluid"s movement through such a path.










Sub-classes under this class:

Class Number Class Name Patents
405/107 Artificial water barrier (e.g., dam, levee, etc.) 143
405/124 Culvert 85
405/81 Fishway 54
405/127 Intake 89
405/84 Navigable canal 12
405/118 Open channel 130
405/87 Water gate or adjustable weir 94


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8602687 Water/fluids surge/backflow protection systems and management Dec. 10, 2013
8545696 Sediment and detention basin drainage system and method Oct. 1, 2013
8517633 Debris-flow prevention method by controlling debris-flow magnitude and avoiding to block main river Aug. 27, 2013
8459900 Vortex flow type water surface control device for draining device Jun. 11, 2013
8434966 Sequenced chamber wave generator apparatus and method May. 7, 2013
8297881 Saltwater intrusion prevention system Oct. 30, 2012
8262317 Juvenile fish bypass system Sep. 11, 2012
8128316 Method of restoration of a highly saline lake Mar. 6, 2012
8074670 Maintaining dynamic water storage in underground porosity reservoirs Dec. 13, 2011
8066879 Method for treating waste water Nov. 29, 2011
7980273 Storm water flow restriction method and apparatus Jul. 19, 2011
7967529 Ocean water drawing system Jun. 28, 2011
7866919 System and method for controlling water flow between multiple reservoirs of a renewable water and energy system Jan. 11, 2011
7857546 Method and apparatus for controlling drainage and irrigation of fields Dec. 28, 2010
7832959 Method of restoration of a highly saline lake Nov. 16, 2010
7824128 Gravity-fed basin for discharging industrial water into a receiving body of water Nov. 2, 2010
7823240 Hooked collar for piers and bridge including the same Nov. 2, 2010
7798419 Method of and a device for the reduction of tropical cyclones destructive force Sep. 21, 2010
7798175 High capacity water diversion conduit Sep. 21, 2010
7727077 Water amusement park water channel flow system Jun. 1, 2010
7708494 Water diversion system and method having hydraulic chute, screen assembly and wedge wire screen May. 4, 2010
7536967 Marine water conversion May. 26, 2009
7507054 Pre-sloped trench drain system Mar. 24, 2009
7465123 Water circulation apparatus to reduce evaporation Dec. 16, 2008
7429147 Anti-flooding device for the exploitation of water energy Sep. 30, 2008
7419334 Thruster flood control method Sep. 2, 2008
7410324 Bio-passage for disrupting laminar flow Aug. 12, 2008
7351007 Waterfall spillway Apr. 1, 2008
7344336 Method of providing clear water for beaches Mar. 18, 2008
7229234 Method for preventing and discharging flood Jun. 12, 2007
7192217 Baffle apparatus Mar. 20, 2007
7186058 Stormwater detention system and method Mar. 6, 2007
7179387 Treatment system and method for remediating a body of water Feb. 20, 2007
7153060 Systems and methods for environmental stabilization of a body of water Dec. 26, 2006
7094337 Overflow chamber Aug. 22, 2006
7052206 System and method for use of an extention basin as a storm water control device May. 30, 2006
7052208 Discharge control system for a reservoir May. 30, 2006
6988853 Muted tidal regulator Jan. 24, 2006
6964541 Fish safe screened water diversion apparatus Nov. 15, 2005
6793440 Natural cue surface bypass collector Sep. 21, 2004
6772789 Flow leveling device Aug. 10, 2004
6736572 Method and apparatus for reducing the pollution of boat harbors May. 18, 2004
6726404 Device and method for simulating natural cues so that waterborne fauna avoid contacting manmade barriers Apr. 27, 2004
6706096 Method and system for protecting buildings from subsurface gases Mar. 16, 2004
6692189 Flume for optimization of sewer system and wastewater treatment plant capacity Feb. 17, 2004
6641328 Fish protective water extraction method and apparatus Nov. 4, 2003
6575662 Water quality management system and method Jun. 10, 2003
6565284 Infiltration control system and method May. 20, 2003
6533496 Water circulation Mar. 18, 2003
6524028 Fish safe screened water diversion apparatus Feb. 25, 2003

1 2 3










 
 
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