Assignee
PARKSON CORP
US·26 granted patents·8 pending applications·382 citations·filing 1988–2021
Top patents by PatentIndex Score
34 records- 0194US6426005B1Sequential descending bed filters with reject/washwater containing impurities being fed to a separate unit for elimination of impuritiesPARKSON CORP·Filed 2000·Granted Jul 30, 2002·73 cites·23 claims
- 0293US11633680B2Bar screen filter apparatus and methodPARKSON CORP·Filed 2020·Granted Apr 25, 2023·6 cites·13 claims
- 0384US5015421ADiffusion devicePARKSON CORP·Filed 1989·Granted May 14, 1991·72 cites·14 claims
- 0483US9656188B2Method and apparatus for separating solid impurities from a fluidPARKSON CORP·Filed 2014·Granted May 23, 2017·5 cites·18 claims
- 0580US11446590B2Methods for cleaning filtration system mediaPARKSON CORP·Filed 2020·Granted Sep 20, 2022·1 cites·20 claims
- 0679US7699177B2Method and apparatus for washing sandPARKSON CORP·Filed 2007·Granted Apr 20, 2010·9 cites·23 claims
- 0777US10376820B2Removing solids from a flowing fluid using a care-free pumped or gravity flow rotating drum screen with stationary stabilization assembliesPARKSON CORP·Filed 2017·Granted Aug 13, 2019·2 cites·18 claims
- 0876US8034243B2Denitrification processPARKSON CORP·Filed 2010·Granted Oct 11, 2011·2 cites·22 claims
- 0975US7662287B2Wastewater denitrification systemPARKSON CORP·Filed 2008·Granted Feb 16, 2010·4 cites·14 claims
- 1073US7806389B2Flexible aeration panel and methods of usePARKSON CORP·Filed 2006·Granted Oct 5, 2010·9 cites·27 claims
- 1171US6689277B2Treatment of liquids with ballasted flocculationPARKSON CORP·Filed 2002·Granted Feb 10, 2004·21 cites·10 claims
- 1271US6517714B2Treatment of liquids with ballasted flocculationPARKSON CORP·Filed 2001·Granted Feb 11, 2003·21 cites·23 claims
- 1370US10889952B2Bar screen filter apparatus and methodPARKSON CORP·Filed 2018·Granted Jan 12, 2021·2 cites·24 claims
- 1469US10112847B2Method and apparatus for treating liquid containing impuritiesPARKSON CORP·Filed 2014·Granted Oct 30, 2018·1 cites·30 claims
- 1568US9616366B2Care-free pumped or gravity flow rotating drum screen with stationary stabilization pad assembliesPARKSON CORP·Filed 2013·Granted Apr 11, 2017·2 cites·21 claims
- 1667US7431840B2Denitrification processPARKSON CORP·Filed 2006·Granted Oct 7, 2008·2 cites·14 claims
- 1766US8025796B2Denitrification systemPARKSON CORP·Filed 2010·Granted Sep 27, 2011·3 cites·18 claims
- 1866US6234323B1Header for a sludge removal systemPARKSON CORP·Filed 1999·Granted May 22, 2001·36 cites·8 claims
- 1964US5639371AAeration reactor with flow controlPARKSON CORP·Filed 1996·Granted Jun 17, 1997·31 cites·13 claims
- 2059US2014216995A1Apparatus for treating liquid containing impuritiesPARKSON CORP·Filed 2014·Application pending·0 cites
- 2159US2017319987A1Method and apparatus for separating solid impurities from a fluidPARKSON CORP·Filed 2017·Application pending·0 cites
- 2257US5906774ASubmerged diffuser lifting arrangementPARKSON CORP·Filed 1997·Granted May 25, 1999·28 cites·10 claims
- 2354US6733670B2Apparatus and method for rehabilitating a traveling bridge filter underdrainPARKSON CORP·Filed 2001·Granted May 11, 2004·7 cites·7 claims
- 2451US12162787B2Auger screen with adjustable length press zonePARKSON CORP·Filed 2021·Granted Dec 10, 2024·0 cites·14 claims
- 2548US5811011ABiological treatment of wastewaterPARKSON CORP·Filed 1997·Granted Sep 22, 1998·16 cites·16 claims
- 2647US2013154132A1Liftable aeration assembly and methods of placing an aeration assembly into a receptaclePARKSON CORP·Filed 2012·Application pending·0 cites
- 2745US2009026152A1Modular filter and vacuum head assembly for a filtering apparatusPARKSON CORP·Filed 2008·Application pending·0 cites
- 2844US2008302724A1Method and apparatus for removing impurities in rejects from sequential filters using separate treatment unitsPARKSON CORP·Filed 2007·Application pending·0 cites
- 2943US2013264296A1Filtering apparatus for removing solid material from a fluid in a channelPARKSON CORP·Filed 2013·Application pending·0 cites
- 3042US2015266759A1Wastewater treatment apparatus with dual-level controlPARKSON CORP·Filed 2015·Application pending·0 cites
- 3141US2008179244A1Drain-flush sequence and system for filter modulePARKSON CORP·Filed 2007·Application pending·0 cites
- 3239US11629065B2Perforated screen conversion kitPARKSON CORP·Filed 2018·Granted Apr 18, 2023·0 cites·8 claims
- 3333US4882068AMethod and apparatus for removing liquid from suspensionsPARKSON CORP·Filed 1988·Granted Nov 21, 1989·10 cites·11 claims
- 3432US5192467AAeration panel structurePARKSON CORP·Filed 1992·Granted Mar 9, 1993·19 cites·7 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →