Inventor · disambiguated record
David W. Presby
Also filed as: PRESBY DAVID · PRESBY DAVID W · PRESBY DAVID WILLIAM
25 granted patents·9 pending applications·358 citations·filing 1980–2024
96Inventor score
Top patents by PatentIndex Score
34 records- 0193US6461078B1Plastic sewage pipeFiled 2000·Granted Oct 8, 2002·72 cites·20 claims
- 0292US5954451AMulti-layer material for processing septic efficient and waste water and method of using the sameFiled 1997·Granted Sep 21, 1999·107 cites·16 claims
- 0384US8342212B2Fluid conduit with layered and partial covering material thereonPRESBY PATENT TRUST·Filed 2006·Granted Jan 1, 2013·8 cites·6 claims
- 0481US8815094B2Fluid conduit with layered and partial covering material thereonPRESBY PATENT TRUST·Filed 2012·Granted Aug 26, 2014·3 cites·20 claims
- 0581US7713414B2Method for removal of contaminants from waterPRESBY DAVID W·Filed 2007·Granted May 11, 2010·6 cites·12 claims
- 0680US7288190B2Method, apparatus and system for removal of contaminants from waterPRESBY DAVID W·Filed 2004·Granted Oct 30, 2007·18 cites·89 claims
- 0778US9192941B2Aggregate analysis techniques and apparatusPRESBY PATENT TRUST·Filed 2014·Granted Nov 24, 2015·2 cites·20 claims
- 0878US8501006B2Apparatus and method for processing liquid wastePRESBY DAVID W·Filed 2011·Granted Aug 6, 2013·4 cites·20 claims
- 0977US6899359B2Means for coupling conduitFiled 2001·Granted May 31, 2005·20 cites·23 claims
- 1077US6792977B2End cap for a corrugated conduitFiled 2001·Granted Sep 21, 2004·22 cites·17 claims
- 1176US8999153B2Liquid waste treatment systemPRESBY PATENT TRUST·Filed 2012·Granted Apr 7, 2015·2 cites·17 claims
- 1276US2025019609A1Biofuel and method of biofuel productionPRESBY DAVID W·Filed 2024·Application pending·0 cites
- 1375US11364834B2Loading/unloading device for a delivery vehiclePRESBY DAVID WILLIAM·Filed 2020·Granted Jun 21, 2022·1 cites·18 claims
- 1475US9783439B2Modular liquid waste treatment system and methodPRESBY PATENT TRUST·Filed 2015·Granted Oct 10, 2017·1 cites·24 claims
- 1573US12018223B2Biofuel and method of biofuel productionPRESBY DAVID W·Filed 2021·Granted Jun 25, 2024·0 cites·10 claims
- 1671US9556604B2Liquid waste treatment apparatusPRESBY PATENT TRUST·Filed 2015·Granted Jan 31, 2017·1 cites·13 claims
- 1766US4373285AGun muzzle loaderGROUT KENNETH M·Filed 1980·Granted Feb 15, 1983·23 cites·4 claims
- 1864US11021380B1Modular wastewater treatment system configured for compact shippingPRESBY DAVID W·Filed 2019·Granted Jun 1, 2021·1 cites·11 claims
- 1961US5606786AApparatus and method for producing pipe and pipe produced therebyFiled 1995·Granted Mar 4, 1997·22 cites·17 claims
- 2061US2014360617A1Liquid waste treatment apparatusPRESBY PATENT TRUST·Filed 2014·Application pending·0 cites
- 2161US2017217787A1Modular liquid waste treatment system and methodPRESBY PATENT TRUST·Filed 2017·Application pending·0 cites
- 2259US11161445B2Loading/unloading device for a delivery vehiclePRESBY DAVID WILLIAM·Filed 2020·Granted Nov 2, 2021·0 cites·20 claims
- 2358US2017114534A1Liquid waste treatment apparatusPRESBY PATENT TRUST·Filed 2016·Application pending·0 cites
- 2458US2025018849A1Loading/unloading device for a delivery vehiclePRESBY DAVID WILLIAM·Filed 2024·Application pending·0 cites
- 2557US5429752AMeans for precipitating out suspended solids in septic tank liquidsFiled 1993·Granted Jul 4, 1995·21 cites·19 claims
- 2655US12005825B2Loading/unloading device for a delivery vehiclePRESBY DAVID WILLIAM·Filed 2021·Granted Jun 11, 2024·0 cites·19 claims
- 2755US6290429B1Multi-level leaching systemFiled 1999·Granted Sep 18, 2001·19 cites·21 claims
- 2854US7270532B2Skimmer tab formerPRESBY DAVID W·Filed 2003·Granted Sep 18, 2007·5 cites·4 claims
- 2950US8807345B2Apparatus and method for analyzing aggregatePRESBY DAVID W·Filed 2012·Granted Aug 19, 2014·0 cites·21 claims
- 3048US10576863B2Loading/unloading device for a delivery vehiclePRESBY PATENT TRUST·Filed 2016·Granted Mar 3, 2020·0 cites·21 claims
- 3146US2019160397A1Modular liquid waste treatment integrated fin members, structure, assembly and method of manufacturePRESBY PATENT TRUST·Filed 2017·Application pending·0 cites
- 3242US2005104376A1Means for coupling conduitFiled 2004·Application pending·0 cites
- 3341US2019160396A1Foldable and removable partition assembly for septic tankPRESBY PATENT TRUST·Filed 2017·Application pending·0 cites
- 3437US2003145708A1Method, apparatus and actuatable perforator for creating apertures in pipe and pipe produced therebyFiled 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →