| Patent | Date |
|---|
Apparatus and method for removing materials from a material collection container
Grant 9,067,727 - Roberts , et al. June 30, 2 | 2015-06-30 |
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
Grant 8,992,774 - Roberts , et al. March 31, 2 | 2015-03-31 |
Apparatus For Removing Impurities From Water Or Wastewater And A Method Of Installing A Fluid Distribution System Therein
App 20150068989 - Roberts; R. Lee ; et al. | 2015-03-12 |
Method of installing an air scour system into a filter bed
Grant 8,889,015 - Roberts , et al. November 18, 2 | 2014-11-18 |
System and method for uniformly distributing a fluid through a filter bed in a filter
Grant 8,668,092 - Roberts , et al. March 11, 2 | 2014-03-11 |
Apparatus and method for removing impurities from water of wastewater
Grant 8,585,896 - Roberts , et al. November 19, 2 | 2013-11-19 |
Dissolved air flotation clarifier
Grant 8,518,266 - Roberts , et al. August 27, 2 | 2013-08-27 |
Flume System For A Filter System Including At Least One Filter Having A Fitler Bed That Is Periodically Washed With Liquid, Gas Or A Bombination Thereof
App 20130134086 - Roberts; R. Lee ; et al. | 2013-05-30 |
Apparatus and method for removing materials from a material collection container
App 20130118616 - Roberts; R. Lee ; et al. | 2013-05-16 |
Underdrain system
Grant 8,409,437 - Roberts , et al. April 2, 2 | 2013-04-02 |
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
Grant 8,333,889 - Roberts , et al. December 18, 2 | 2012-12-18 |
Apparatus and method for removing impurities from water of wastewater
App 20120312740 - Roberts; R. Lee ; et al. | 2012-12-13 |
Method of washing a particulate filter bed using an underdrain
Grant 8,277,665 - Roberts , et al. October 2, 2 | 2012-10-02 |
Method Of Washing A Particulate Filter Bed Using An Underdrain
App 20120211444 - Roberts; R. Lee ; et al. | 2012-08-23 |
Apparatus for removing impurities from water or wastewater and a method of installing a fluid distribution system therein
App 20120111777 - Roberts; R. Lee ; et al. | 2012-05-10 |
Underdrain system
App 20120048793 - Roberts; R. Lee ; et al. | 2012-03-01 |
Underdrain for a filter system for filtering water or wastewater and a method of washing the filter system
Grant 8,070,946 - Roberts , et al. December 6, 2 | 2011-12-06 |
Underdrain system
Grant 8,052,871 - Roberts , et al. November 8, 2 | 2011-11-08 |
Underdrain system
Grant 8,052,870 - Roberts , et al. November 8, 2 | 2011-11-08 |
System and method for uniformly distributing a fluid through a filter bed in a filter
App 20110226687 - Roberts; R. Lee ; et al. | 2011-09-22 |
Dissolved air flotation clarifier
App 20110114565 - Roberts; R. Lee ; et al. | 2011-05-19 |
System for filtering water or wastewater
Grant 7,927,485 - Roberts , et al. April 19, 2 | 2011-04-19 |
System and method for uniformly distributing a fluid through a filter bed in a filter
Grant 7,922,903 - Roberts , et al. April 12, 2 | 2011-04-12 |
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
App 20100300954 - Roberts; R. Lee ; et al. | 2010-12-02 |
Underdrain system
Grant 7,820,043 - Roberts , et al. October 26, 2 | 2010-10-26 |
Filter system
Grant 7,771,597 - Addison August 10, 2 | 2010-08-10 |
Flume for a filter system including at least one filter having a filter bed that is periodically washed with liquid, gas or a combination thereof
Grant 7,758,750 - Roberts , et al. July 20, 2 | 2010-07-20 |
System and method for uniformly distributing a fluid through a filter bed in a filter
Grant 7,736,506 - Roberts , et al. June 15, 2 | 2010-06-15 |
System for filtering water or wastewater and methods of operating the filter system
App 20090294370 - Roberts; R. Lee ; et al. | 2009-12-03 |
Underdrain for a filter system for filtering water or wastewater and a method of washing the filter system
App 20090071914 - Roberts; R. Lee ; et al. | 2009-03-19 |
System and method for filtering water and/or wastewater
App 20080230474 - Roberts; R. Lee ; et al. | 2008-09-25 |
Filter system and methods of operating the same
App 20080190835 - Addison; Mark Kevin | 2008-08-14 |
System and method for uniformly distributing a fluid through a filter bed in a filter
App 20080099412 - Roberts; R. Lee ; et al. | 2008-05-01 |
System and method for uniformly distributing a fluid through a filter bed in a filter
App 20080099411 - Roberts; R. Lee ; et al. | 2008-05-01 |
Underdrain
Grant D565,148 - Addison March 25, 2 | 2008-03-25 |
Underdrain system
App 20080000825 - Roberts; R. Lee ; et al. | 2008-01-03 |
Apparatus for directing fluids through a filter system
Grant 7,288,193 - Roberts , et al. October 30, 2 | 2007-10-30 |
Underdrain system
Grant 7,288,194 - Roberts , et al. October 30, 2 | 2007-10-30 |
Underdrain system
App 20070235382 - Roberts; R. Lee ; et al. | 2007-10-11 |
Flume for a filter system including at least one filter having a filter bed that is periodically washed with liquid, gas or a combination thereof
App 20070039867 - Roberts; R. Lee ; et al. | 2007-02-22 |
Method and apparatus for pretreating filter media prior to installation of the filter media in a filter
App 20060272679 - Roberts; R. Lee ; et al. | 2006-12-07 |
Apparatus for directing fluids through a filter system
App 20060118473 - Roberts; R. Lee ; et al. | 2006-06-08 |
Underdrain system
App 20060113234 - Roberts; R. Lee ; et al. | 2006-06-01 |
Filter system and methods of operating the same
Grant 6,998,046 - Roberts , et al. February 14, 2 | 2006-02-14 |
Underdrain system
Grant 6,991,723 - Roberts , et al. January 31, 2 | 2006-01-31 |
Apparatus for directing fluids through a filter system
Grant 6,989,096 - Roberts , et al. January 24, 2 | 2006-01-24 |
Underdrain system
Grant 6,982,034 - Roberts , et al. January 3, 2 | 2006-01-03 |
Modular filter system and method of repairing and/or replacing components thereof
Grant 6,942,795 - Roberts , et al. September 13, 2 | 2005-09-13 |
Underdrain system
App 20050194302 - Roberts, R. Lee ; et al. | 2005-09-08 |
Modular filter system and method of repairing and/or replacing components thereof
App 20040149641 - Roberts, R. Lee ; et al. | 2004-08-05 |
Low profile extruded underdrain
Grant 6,740,237 - Roberts , et al. May 25, 2 | 2004-05-25 |
Underdrain system
App 20040031743 - Roberts, R. Lee ; et al. | 2004-02-19 |
Filter system and methods of operating the same
App 20040026343 - Roberts, R. Lee ; et al. | 2004-02-12 |
Apparatus for directing fluids through a filter system
App 20030201219 - Roberts, R. Lee ; et al. | 2003-10-30 |
Modular filter system
Grant 6,616,852 - Roberts , et al. September 9, 2 | 2003-09-09 |
Underdrain system
App 20030047502 - Roberts, R. Lee ; et al. | 2003-03-13 |
Modular filter system
App 20030000883 - Roberts, R. Lee ; et al. | 2003-01-02 |
Apparatus for directing fluids through a filter system
App 20020096463 - Roberts, R. Lee ; et al. | 2002-07-25 |
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