Inventor · disambiguated record
David L. Hansen
Also filed as: HANSEN DAVID · HANSEN DAVID L · HANSEN DAVID LELAND
28 granted patents·2 pending applications·668 citations·filing 1983–2018
97Inventor score
Files withLANDFILL SERVICE CORP7HANSEN DAVID L6LANDFILL TECHNOLOGIES INC5EAC SYSTEMS INC2FIRST DATA CORP2
Top patents by PatentIndex Score
30 records- 0193US7544243B2Bulk material cover compositions and methods for applyingLANDFILL SERVICE CORP·Filed 2006·Granted Jun 9, 2009·21 cites·43 claims
- 0293US5601413AAutomatic low fluid shut-off method for a pumping systemGREAT PLAINS IND INC·Filed 1996·Granted Feb 11, 1997·120 cites·20 claims
- 0390US5161915ASynthetic cover for waste pilesLANDFILL SERVICE CORP·Filed 1991·Granted Nov 10, 1992·53 cites·34 claims
- 0487US5072833AMethod of collecting recyclable materialsEAC SYSTEMS INC·Filed 1989·Granted Dec 17, 1991·76 cites·16 claims
- 0585US8946324B2Bulk material cover compositions and methods of applyingHANSEN DAVID L·Filed 2012·Granted Feb 3, 2015·3 cites·21 claims
- 0685US4920859ARadial piston pump and motorEATON CORP·Filed 1986·Granted May 1, 1990·48 cites·10 claims
- 0784US8029616B2Bulk material cover compositionLSC ENVIRONMENTAL PRODUCTS LLC·Filed 2009·Granted Oct 4, 2011·8 cites·20 claims
- 0883US5525009ASynthetic bulk material cover and method of using the sameLANDFILL SERVICE CORP·Filed 1995·Granted Jun 11, 1996·36 cites·28 claims
- 0982US5265979AHigh efficiency waste placement system for municipal landfillsLANDFILL SERVICE CORP·Filed 1992·Granted Nov 30, 1993·40 cites·28 claims
- 1081US4917733APozzolanic mixture for stabilizing landfill leachateHANSEN DAVID L·Filed 1988·Granted Apr 17, 1990·37 cites·20 claims
- 1180US5275508ASynthetic cover for wasteLANDFILL SERVICE CORP·Filed 1992·Granted Jan 4, 1994·32 cites·24 claims
- 1279US7487127B2Merchant cash payment systems and methodsFIRST DATA CORP·Filed 2002·Granted Feb 3, 2009·20 cites·19 claims
- 1378USD339810SPlastic utility pumpGREAT PLAINS IND INC·Filed 1991·Granted Sep 28, 1993·19 cites·1 claims
- 1474US9193629B2Bulk material cover compositionsLSC ENVIRONMENTAL PRODUCTS LLC·Filed 2014·Granted Nov 24, 2015·2 cites·18 claims
- 1571US5385429ASynthetic cover for wasteLANDFILL SERVICE CORP·Filed 1994·Granted Jan 31, 1995·26 cites·23 claims
- 1670US7849006B2Online staging of auction settlement transactionsWESTERN UNION CO·Filed 2003·Granted Dec 7, 2010·3 cites·23 claims
- 1766US5251761AMethod of collecting recyclable materialsEAC SYSTEMS INC·Filed 1991·Granted Oct 12, 1993·37 cites·8 claims
- 1860US7249607B2Landfill conduit servicing systems and methods for servicing landfill conduitsLANDFILL SERVICE CORP·Filed 2004·Granted Jul 31, 2007·9 cites·18 claims
- 1959US2003187792A1Worldwide cash vendor paymentFIRST DATA CORP·Filed 2002·Application pending·0 cites
- 2058US9579699B2Bulk material cover compositions and methods of applyingHANSEN DAVID L·Filed 2012·Granted Feb 28, 2017·0 cites·20 claims
- 2156US4679488AIntegral rotational displacement sensor for an hydraulic motorKRUTZ GARY·Filed 1985·Granted Jul 14, 1987·15 cites·22 claims
- 2255US2007020363A1Ice cream cone shellHANSEN DAVID·Filed 2005·Application pending·0 cites
- 2351US5324138AIn situ process for increasing the capacity of a municipal solid waste landfillLANDFILL TECHNOLOGIES INC·Filed 1990·Granted Jun 28, 1994·14 cites·14 claims
- 2450US5924821AApparatus and method for gas and/or liquid exchange between an area outside and an area inside a bulk material pileLANDFILL TECHNOLOGIES INC·Filed 1997·Granted Jul 20, 1999·10 cites·48 claims
- 2548US5957681ASelf ignited landfill gas vent flare and flareheadLANDFILL TECHNOLOGIES INC·Filed 1995·Granted Sep 28, 1999·14 cites·16 claims
- 2648US5636940AApparatus and method for gas and/or liquid exchange between an area outside and an area inside a bulk material pileLANDFILL TECHNOLOGIES INC·Filed 1995·Granted Jun 10, 1997·7 cites·29 claims
- 2741USD578840SElectrically heated ice cream scoopHANSEN DAVID L·Filed 2007·Granted Oct 21, 2008·7 cites·1 claims
- 2837US5984668ASparking device for promoting avoidance of short-circuitingLANDFILL TECHNOLOGIES INC·Filed 1998·Granted Nov 16, 1999·9 cites·20 claims
- 2936USD281198SAquatic exercise tankHANSEN DAVID L·Filed 1983·Granted Oct 29, 1985·1 cites·1 claims
- 3035USD893268SElectrically heated ice cream scoopHANSEN DAVID L·Filed 2018·Granted Aug 18, 2020·1 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →