Inventor
ROBERTS R LEE
US63 patents
⚠️ This page may combine multiple inventors who share the name “ROBERTS R LEE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RG DELAWARE INC
19 patentsUS6569327B2May 27, 2003
Apparatus for directing fluids through a filter system
RG DELAWARE INC32 citations92
US6159384ADec 12, 2000
Methods and apparatus for monitoring a filter bed by differential pressure
RG DELAWARE INC22 citations92
US5980755ANov 9, 1999
Methods and apparatus for monitoring a filter bed by differential pressure
RG DELAWARE INC42 citations92
US6740237B1May 25, 2004
Low profile extruded underdrain
RG DELAWARE INC37 citations91
US6325931B1Dec 4, 2001
Filtration system having a low profile extruded underdrain
RG DELAWARE INC39 citations91
US8052870B2Nov 8, 2011
Underdrain system
RG DELAWARE INC8 citations84
US7922903B2Apr 12, 2011
System and method for uniformly distributing a fluid through a filter bed in a filter
RG DELAWARE INC8 citations84
US7754089B2Jul 13, 2010
Method and apparatus for monitoring an underdrain of a filter system
RG DELAWARE INC9 citations84
US7736506B2Jun 15, 2010
System and method for uniformly distributing a fluid through a filter bed in a filter
RG DELAWARE INC8 citations84
US7481930B2Jan 27, 2009
Filter having a filter layer that forms a protective barrier to prevent clogging of a gravel-less underdrain and method of making the same
RG DELAWARE INC9 citations84
US6989096B2Jan 24, 2006
Apparatus for directing fluids through a filter system
RG DELAWARE INC11 citations84
US6982034B2Jan 3, 2006
Underdrain system
RG DELAWARE INC13 citations84
US7820043B2Oct 26, 2010
Underdrain system
RG DELAWARE INC9 citations79
US7288193B2Oct 30, 2007
Apparatus for directing fluids through a filter system
RG DELAWARE INC8 citations74
US6991723B2Jan 31, 2006
Underdrain system
RG DELAWARE INC8 citations74
US8052871B2Nov 8, 2011
Underdrain system
RG DELAWARE INC3 citations63
US7921697B2Apr 12, 2011
Method and apparatus for monitoring an underdrain of a filter system
RG DELAWARE INC2 citations63
US6998046B2Feb 14, 2006
Filter system and methods of operating the same
RG DELAWARE INC5 citations63
US6616852B2Sep 9, 2003
Modular filter system
RG DELAWARE INC4 citations63
ROBERTS R LEE
12 patentsUS8889015B2Nov 18, 2014
Method of installing an air scour system into a filter bed
ROBERTS R LEE16 citations92
US8585896B2Nov 19, 2013
Apparatus and method for removing impurities from water of wastewater
ROBERTS R LEE12 citations84
US8454841B2Jun 4, 2013
Method of filtering water or wastewater
ROBERTS R LEE12 citations84
US8409437B2Apr 2, 2013
Underdrain system
ROBERTS R LEE7 citations84
US8317036B2Nov 27, 2012
Apparatus and method for removing impurities from water or wastewater
ROBERTS R LEE17 citations84
US8333889B2Dec 18, 2012
Flume system for a filter system including at least one filter having a filter bed that is periodically washed with liquid, gas or a combination thereof
ROBERTS R LEE7 citations81
US9067727B2Jun 30, 2015
Apparatus and method for removing materials from a material collection container
ROBERTS R LEE16 citations79
US8070946B2Dec 6, 2011
Underdrain for a filter system for filtering water or wastewater and a method of washing the filter system
ROBERTS R LEE6 citations74
US9072989B2Jul 7, 2015
Underdrain for a filter system for filtering water or wastewater
ROBERTS R LEE4 citations63
US8998001B2Apr 7, 2015
Apparatus and method for removing materials from a material collection container
ROBERTS R LEE3 citations63
US8518266B2Aug 27, 2013
Dissolved air flotation clarifier
ROBERTS R LEE4 citations63
US8277665B2Oct 2, 2012
Method of washing a particulate filter bed using an underdrain
ROBERTS R LEE3 citations63
ROBERTS MARKETING DE INC
11 patentsUS9468869B2Oct 18, 2016
Method for washing a filter for filtering water or wastewater
ROBERTS MARKETING DE INC4 citations84
US8652328B2Feb 18, 2014
Apparatus for filtering water or wastewater
ROBERTS MARKETING DE INC11 citations84
US11090586B2Aug 17, 2021
Devices and methods for moving, removing and/or installing one or more components of a treatment unit
ROBERTS MARKETING DE INC1 citations73
US10376817B2Aug 13, 2019
Apparatus for removing impurities from water or wastewater
ROBERTS MARKETING DE INC2 citations73
US9731228B2Aug 15, 2017
Apparatus for removing impurities from water or wastewater and a method of installing a fluid distribution system therein
ROBERTS MARKETING DE INC3 citations73
US9517947B2Dec 13, 2016
Apparatus for filtering water or wastewater
ROBERTS MARKETING DE INC4 citations73
US10960326B2Mar 30, 2021
Underdrain for a filter system for filtering water or wastewater and a method of washing a filter system
ROBERTS MARKETING DE INC2 citations68
US9987569B2Jun 5, 2018
Underdrain for a filter system for filtering water or wastewater and a method of washing a filter system
ROBERTS MARKETING DE INC4 citations68
US12491454B2Dec 9, 2025
Devices and methods for moving, removing and/or installing one or more components of a treatment unit
ROBERTS MARKETING DE INC0 citations62
US12083451B2Sep 10, 2024
Devices and methods for moving, removing and/or installing one or more components of a treatment unit
ROBERTS MARKETING DE INC0 citations62
US11713266B2Aug 1, 2023
Systems for removing sludge from or distributing fluids in sludge or waste collection vessels
ROBERTS MARKETING DE INC0 citations62
ROBERTS FILTER MFG
7 patentsUS5534202AJul 9, 1996
Air grid for underdrains and similar systems
ROBERTS FILTER MFG44 citations93
US5413710AMay 9, 1995
Lateral underdrain
ROBERTS FILTER MFG36 citations91
US5314630AMay 24, 1994
Systems and methods for clarifying liquids
ROBERTS FILTER MFG27 citations90
US5198124AMar 30, 1993
Upflow filter and method of washing same
ROBERTS FILTER MFG34 citations90
US5080808AJan 14, 1992
Method of washing an upflow filter and filter bed employed in said filter
ROBERTS FILTER MFG40 citations90
US5061080AOct 29, 1991
Rotary agitator
ROBERTS FILTER MFG26 citations87
US5127582AJul 7, 1992
Nozzles for rotary agitators
ROBERTS FILTER MFG10 citations74
RF DELAWARE INC
1 patentShowing the top 50 of 63 patents by PatentIndex Score.