Assignee
RG DELAWARE INC
US·27 granted patents·310 citations·filing 1997–2012
Top patents by PatentIndex Score
27 records- 0190US6569327B2Apparatus for directing fluids through a filter systemRG DELAWARE INC·Filed 2001·Granted May 27, 2003·32 cites·18 claims
- 0287US6325931B1Filtration system having a low profile extruded underdrainRG DELAWARE INC·Filed 2000·Granted Dec 4, 2001·39 cites·12 claims
- 0385US7288193B2Apparatus for directing fluids through a filter systemRG DELAWARE INC·Filed 2006·Granted Oct 30, 2007·8 cites·20 claims
- 0485US5980755AMethods and apparatus for monitoring a filter bed by differential pressureRG DELAWARE INC·Filed 1997·Granted Nov 9, 1999·42 cites·33 claims
- 0583US8052870B2Underdrain systemRG DELAWARE INC·Filed 2007·Granted Nov 8, 2011·8 cites·16 claims
- 0683US7754089B2Method and apparatus for monitoring an underdrain of a filter systemRG DELAWARE INC·Filed 2006·Granted Jul 13, 2010·9 cites·23 claims
- 0781US7481930B2Filter 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
- 0880US7820043B2Underdrain systemRG DELAWARE INC·Filed 2006·Granted Oct 26, 2010·9 cites·13 claims
- 0979US7922903B2System 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
- 1079US7736506B2System 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
- 1174US6740237B1Low profile extruded underdrainRG DELAWARE INC·Filed 1997·Granted May 25, 2004·37 cites·5 claims
- 1273US7927485B2System for filtering water or wastewaterRG DELAWARE INC·Filed 2008·Granted Apr 19, 2011·5 cites·29 claims
- 1373US7921697B2Method and apparatus for monitoring an underdrain of a filter systemRG DELAWARE INC·Filed 2010·Granted Apr 12, 2011·2 cites·20 claims
- 1472US8992774B2Flume 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
- 1572US6982034B2Underdrain systemRG DELAWARE INC·Filed 2001·Granted Jan 3, 2006·13 cites·13 claims
- 1671USD519601SUnderdrainRG DELAWARE INC·Filed 2004·Granted Apr 25, 2006·14 cites·1 claims
- 1771US6989096B2Apparatus for directing fluids through a filter systemRG DELAWARE INC·Filed 2003·Granted Jan 24, 2006·11 cites·15 claims
- 1869US8052871B2Underdrain systemRG DELAWARE INC·Filed 2005·Granted Nov 8, 2011·3 cites·7 claims
- 1965USD565148SUnderdrainRG DELAWARE INC·Filed 2006·Granted Mar 25, 2008·12 cites·1 claims
- 2065US6991723B2Underdrain systemRG DELAWARE INC·Filed 2003·Granted Jan 31, 2006·8 cites·20 claims
- 2161US6159384AMethods and apparatus for monitoring a filter bed by differential pressureRG DELAWARE INC·Filed 1999·Granted Dec 12, 2000·22 cites·33 claims
- 2256US6998046B2Filter system and methods of operating the sameRG DELAWARE INC·Filed 2002·Granted Feb 14, 2006·5 cites·25 claims
- 2354US6616852B2Modular filter systemRG DELAWARE INC·Filed 2001·Granted Sep 9, 2003·4 cites·23 claims
- 2448US7771597B2Filter systemRG DELAWARE INC·Filed 2007·Granted Aug 10, 2010·0 cites·23 claims
- 2546US7213712B2System for settling solids or other impurities from water or wastewater and associated methodsRG DELAWARE INC·Filed 2005·Granted May 8, 2007·0 cites·21 claims
- 2645US7758750B2Flume 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 2005·Granted Jul 20, 2010·0 cites·16 claims
- 2744US6942795B2Modular filter system and method of repairing and/or replacing components thereofRG DELAWARE INC·Filed 2003·Granted Sep 13, 2005·0 cites·4 claims
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