Inventor · disambiguated record
R. Lee Roberts
Also filed as: ROBERTS LEE R · ROBERTS R L · ROBERTS R LEE
65 granted patents·8 pending applications·711 citations·filing 1990–2024
99Inventor score
Files withRG DELAWARE INC24ROBERTS MARKETING DE INC17ROBERTS R LEE15ROBERTS FILTER MFG7R G DELAWARE INC3
Top patents by PatentIndex Score
73 records- 0196US8889015B2Method of installing an air scour system into a filter bedROBERTS R LEE·Filed 2011·Granted Nov 18, 2014·16 cites·19 claims
- 0294US8317036B2Apparatus and method for removing impurities from water or wastewaterROBERTS R LEE·Filed 2010·Granted Nov 27, 2012·17 cites·18 claims
- 0393US8652328B2Apparatus for filtering water or wastewaterROBERTS MARKETING DE INC·Filed 2013·Granted Feb 18, 2014·11 cites·15 claims
- 0493US8454841B2Method of filtering water or wastewaterROBERTS R LEE·Filed 2010·Granted Jun 4, 2013·12 cites·11 claims
- 0590US10376817B2Apparatus for removing impurities from water or wastewaterROBERTS MARKETING DE INC·Filed 2017·Granted Aug 13, 2019·2 cites·17 claims
- 0690US8585896B2Apparatus and method for removing impurities from water of wastewaterROBERTS R LEE·Filed 2011·Granted Nov 19, 2013·12 cites·23 claims
- 0790US6569327B2Apparatus for directing fluids through a filter systemRG DELAWARE INC·Filed 2001·Granted May 27, 2003·32 cites·18 claims
- 0889US12491454B2Devices and methods for moving, removing and/or installing one or more components of a treatment unitROBERTS MARKETING DE INC·Filed 2024·Granted Dec 9, 2025·0 cites·20 claims
- 0988US9067727B2Apparatus and method for removing materials from a material collection containerROBERTS R LEE·Filed 2011·Granted Jun 30, 2015·16 cites·32 claims
- 1088US8409437B2Underdrain systemROBERTS R LEE·Filed 2011·Granted Apr 2, 2013·7 cites·17 claims
- 1187US9731228B2Apparatus for removing impurities from water or wastewater and a method of installing a fluid distribution system thereinROBERTS MARKETING DE INC·Filed 2014·Granted Aug 15, 2017·3 cites·14 claims
- 1287US6325931B1Filtration system having a low profile extruded underdrainRG DELAWARE INC·Filed 2000·Granted Dec 4, 2001·39 cites·12 claims
- 1386US9468869B2Method for washing a filter for filtering water or wastewaterROBERTS MARKETING DE INC·Filed 2014·Granted Oct 18, 2016·4 cites·12 claims
- 1485US7288193B2Apparatus for directing fluids through a filter systemRG DELAWARE INC·Filed 2006·Granted Oct 30, 2007·8 cites·20 claims
- 1585US5980755AMethods and apparatus for monitoring a filter bed by differential pressureRG DELAWARE INC·Filed 1997·Granted Nov 9, 1999·42 cites·33 claims
- 1684US9517947B2Apparatus for filtering water or wastewaterROBERTS MARKETING DE INC·Filed 2014·Granted Dec 13, 2016·4 cites·13 claims
- 1783US9987569B2Underdrain for a filter system for filtering water or wastewater and a method of washing a filter systemROBERTS MARKETING DE INC·Filed 2015·Granted Jun 5, 2018·4 cites·20 claims
- 1883US8052870B2Underdrain systemRG DELAWARE INC·Filed 2007·Granted Nov 8, 2011·8 cites·16 claims
- 1983US7754089B2Method and apparatus for monitoring an underdrain of a filter systemRG DELAWARE INC·Filed 2006·Granted Jul 13, 2010·9 cites·23 claims
- 2083US2023322597A1Systems for Removing Sludge from or Distributing Fluids in Sludge or Waste Collection VesselsROBERTS MARKETING DE INC·Filed 2023·Application pending·0 cites
- 2182US11090586B2Devices and methods for moving, removing and/or installing one or more components of a treatment unitROBERTS MARKETING DE INC·Filed 2018·Granted Aug 17, 2021·1 cites·22 claims
- 2281US7481930B2Filter having a filter layer that forms a protective barrier to prevent clogging of a gravel-less underdrain and method of making the sameRG DELAWARE INC·Filed 2005·Granted Jan 27, 2009·9 cites·21 claims
- 2380US7820043B2Underdrain systemRG DELAWARE INC·Filed 2006·Granted Oct 26, 2010·9 cites·13 claims
- 2480US5534202AAir grid for underdrains and similar systemsROBERTS FILTER MFG·Filed 1994·Granted Jul 9, 1996·44 cites·15 claims
- 2579US8277665B2Method of washing a particulate filter bed using an underdrainROBERTS R LEE·Filed 2011·Granted Oct 2, 2012·3 cites·2 claims
- 2679US7922903B2System and method for uniformly distributing a fluid through a filter bed in a filterRG DELAWARE INC·Filed 2006·Granted Apr 12, 2011·8 cites·25 claims
- 2779US7736506B2System and method for uniformly distributing a fluid through a filter bed in a filterRG DELAWARE INC·Filed 2006·Granted Jun 15, 2010·8 cites·19 claims
- 2878US10960326B2Underdrain for a filter system for filtering water or wastewater and a method of washing a filter systemROBERTS MARKETING DE INC·Filed 2018·Granted Mar 30, 2021·2 cites·9 claims
- 2978US8070946B2Underdrain for a filter system for filtering water or wastewater and a method of washing the filter systemROBERTS R LEE·Filed 2007·Granted Dec 6, 2011·6 cites·18 claims
- 3077US12083451B2Devices and methods for moving, removing and/or installing one or more components of a treatment unitROBERTS MARKETING DE INC·Filed 2021·Granted Sep 10, 2024·0 cites·17 claims
- 3177US8998001B2Apparatus and method for removing materials from a material collection containerROBERTS R LEE·Filed 2012·Granted Apr 7, 2015·3 cites·14 claims
- 3277US8333889B2Flume system for a filter system including at least one filter having a filter bed that is periodically washed with liquid, gas or a combination thereofROBERTS R LEE·Filed 2009·Granted Dec 18, 2012·7 cites·10 claims
- 3375US11713266B2Systems for removing sludge from or distributing fluids in sludge or waste collection vesselsROBERTS MARKETING DE INC·Filed 2020·Granted Aug 1, 2023·0 cites·11 claims
- 3474US6740237B1Low profile extruded underdrainRG DELAWARE INC·Filed 1997·Granted May 25, 2004·37 cites·5 claims
- 3573US7927485B2System for filtering water or wastewaterRG DELAWARE INC·Filed 2008·Granted Apr 19, 2011·5 cites·29 claims
- 3673US7921697B2Method and apparatus for monitoring an underdrain of a filter systemRG DELAWARE INC·Filed 2010·Granted Apr 12, 2011·2 cites·20 claims
- 3773US2024359116A1Apparatus and method for improving the efficiency of a new or existing filter for filtering water or wastewaterROBERTS WATER TECH INC·Filed 2024·Application pending·0 cites
- 3872US9072989B2Underdrain for a filter system for filtering water or wastewaterROBERTS R LEE·Filed 2012·Granted Jul 7, 2015·4 cites·27 claims
- 3972US8992774B2Flume system for a filter system including at least one filter having a filter bed that is periodically washed with liquid, gas or a combination thereofRG DELAWARE INC·Filed 2012·Granted Mar 31, 2015·2 cites·18 claims
- 4072US6982034B2Underdrain systemRG DELAWARE INC·Filed 2001·Granted Jan 3, 2006·13 cites·13 claims
- 4172US5413710ALateral underdrainROBERTS FILTER MFG·Filed 1993·Granted May 9, 1995·36 cites·15 claims
- 4272US5080808AMethod of washing an upflow filter and filter bed employed in said filterROBERTS FILTER MFG·Filed 1990·Granted Jan 14, 1992·40 cites·18 claims
- 4372US2020016517A1Apparatus for removing impurities from water or wastewater and a method of installing a fluid distribution system thereinROBERTS MARKETING DE INC·Filed 2019·Application pending·0 cites
- 4471US8518266B2Dissolved air flotation clarifierROBERTS R LEE·Filed 2009·Granted Aug 27, 2013·4 cites·19 claims
- 4571US6989096B2Apparatus for directing fluids through a filter systemRG DELAWARE INC·Filed 2003·Granted Jan 24, 2006·11 cites·15 claims
- 4670US7288194B2Underdrain systemRG DELEWARE INC·Filed 2006·Granted Oct 30, 2007·4 cites·18 claims
- 4769US8052871B2Underdrain systemRG DELAWARE INC·Filed 2005·Granted Nov 8, 2011·3 cites·7 claims
- 4869US5198124AUpflow filter and method of washing sameROBERTS FILTER MFG·Filed 1992·Granted Mar 30, 1993·34 cites·17 claims
- 4968US12053722B2Apparatus and method for improving the efficiency of a new or existing filter for filtering water or wastewaterROBERTS WATER TECH INC·Filed 2021·Granted Aug 6, 2024·0 cites·25 claims
- 5065US6991723B2Underdrain systemRG DELAWARE INC·Filed 2003·Granted Jan 31, 2006·8 cites·20 claims
Showing the top 50 of 73 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →