Inventor · disambiguated record
David Johnson
Also filed as: JOHNSON DAVID · JOHNSON DAVID E · JOHNSON DAVID EDWIN · JOHNSON JR DAVID E
70 granted patents·7 pending applications·1,456 citations·filing 1979–2015
99Inventor score
Files withJOHNSON DAVID19MORRIS DONALD14LIFT U DIVISION HOGAN MFG INC12JOHNSON DAVID E6GALLOWAY KEVIN S4
Top patents by PatentIndex Score
77 records- 0197US8375496B1Fold out rampLIFT U DIVISION HOGAN MFG INC·Filed 2012·Granted Feb 19, 2013·30 cites·29 claims
- 0296US8250693B1Fold out rampJOHNSON DAVID·Filed 2012·Granted Aug 28, 2012·27 cites·26 claims
- 0396US8132281B1Fold out rampJOHNSON DAVID·Filed 2011·Granted Mar 13, 2012·22 cites·13 claims
- 0496US7533432B2Counterbalance assembly for a fold out rampLIFT U DIVISION HOGAN MFG INC·Filed 2008·Granted May 19, 2009·51 cites·20 claims
- 0595US9050229B1Fold out rampMORRIS DONALD·Filed 2013·Granted Jun 9, 2015·24 cites·19 claims
- 0695US7681272B2Counterbalance assembly for a fold out rampLIFT U DIVISION HOGAN MFG INC·Filed 2008·Granted Mar 23, 2010·45 cites·20 claims
- 0795US7533434B2Counterbalance assembly for a fold out rampLIFT U DIVISION HOGAN MFG INC·Filed 2008·Granted May 19, 2009·45 cites·20 claims
- 0894US9271883B2Ramp assembly with tilt sensorJOHNSON DAVID·Filed 2013·Granted Mar 1, 2016·21 cites·17 claims
- 0994US7533433B2Counterbalance assembly for a fold out rampLIFT U DIVISION HOGAN MFG INC·Filed 2008·Granted May 19, 2009·40 cites·20 claims
- 1094US7063306B2Electronic winch monitoring systemPACCAR INC·Filed 2004·Granted Jun 20, 2006·59 cites·5 claims
- 1193US8832893B1Operable rampMORRIS DONALD·Filed 2014·Granted Sep 16, 2014·14 cites·5 claims
- 1293US8234737B2Latch for a fold out rampMORRIS DONALD·Filed 2011·Granted Aug 7, 2012·21 cites·12 claims
- 1392US8122553B1Fold out rampJOHNSON DAVID·Filed 2011·Granted Feb 28, 2012·31 cites·14 claims
- 1491US9289693B1Motion platform for a simulation deviceHOGAN MFG INC·Filed 2014·Granted Mar 22, 2016·15 cites·22 claims
- 1591US8032963B2Fold out rampLIFT U A DIVISION OF HOGAN MFG INC·Filed 2008·Granted Oct 11, 2011·28 cites·20 claims
- 1691US7201366B2Electronic winch monitoring systemPACCAR INC·Filed 2006·Granted Apr 10, 2007·23 cites·18 claims
- 1791US4653269AHeat engineJOHNSON DAVID E·Filed 1985·Granted Mar 31, 1987·63 cites·20 claims
- 1890US7658335B2Hydronic heating systemTHERMODYNAMIC PROCESS CONTROL·Filed 2007·Granted Feb 9, 2010·32 cites·18 claims
- 1989US8181300B1Fold out rampJOHNSON DAVID·Filed 2011·Granted May 22, 2012·20 cites·14 claims
- 2088US9430953B2Simulation device with motion stabilizationHOGAN MFG INC·Filed 2015·Granted Aug 30, 2016·9 cites·15 claims
- 2188US8918939B1Operable rampMORRIS DONALD·Filed 2014·Granted Dec 30, 2014·12 cites·11 claims
- 2288US8739342B1Operable stepJOHNSON DAVID·Filed 2013·Granted Jun 3, 2014·18 cites·7 claims
- 2388US8505141B1Compact folding slide-out ramp assemblyLIFT U DIVISION HOGAN MFG INC·Filed 2013·Granted Aug 13, 2013·23 cites·17 claims
- 2488US8438683B1Sliding fold out rampMORRIS DONALD·Filed 2011·Granted May 14, 2013·13 cites·20 claims
- 2588US8230539B2Fold out rampMORRIS DONALD·Filed 2008·Granted Jul 31, 2012·19 cites·23 claims
- 2687US8631529B1Operable stepJOHNSON DAVID·Filed 2012·Granted Jan 21, 2014·17 cites·15 claims
- 2787US8402660B1Ramp assembly installation methodJOHNSON DAVID·Filed 2012·Granted Mar 26, 2013·10 cites·11 claims
- 2886US8635729B1Ramp assembly with tilt sensorJOHNSON DAVID·Filed 2013·Granted Jan 28, 2014·18 cites·20 claims
- 2986US7870631B2Fold out rampLIFT U DIVISION HOGAN MFG INC·Filed 2008·Granted Jan 18, 2011·31 cites·20 claims
- 3084US8887337B1Operable rampMORRIS DONALD·Filed 2014·Granted Nov 18, 2014·14 cites·18 claims
- 3184US8533884B1Fold out rampJOHNSON DAVID·Filed 2012·Granted Sep 17, 2013·16 cites·21 claims
- 3284US8020234B2Counterbalance mechanism for fold out rampLIFT U A DIVISION OF HOGAN MFG INC·Filed 2010·Granted Sep 20, 2011·18 cites·9 claims
- 3384US7870630B2Articulating close out assembly for a fold out rampLIFT U DIVISION HOGAN MFG INC·Filed 2008·Granted Jan 18, 2011·15 cites·18 claims
- 3483US4868504AApparatus and method for locating metal objects and minerals in the ground with return of energy from transmitter coil to power supplyFLR INC·Filed 1987·Granted Sep 19, 1989·56 cites·43 claims
- 3582US8869333B2Ramp assembly with tilt sensorJOHNSON DAVID·Filed 2013·Granted Oct 28, 2014·18 cites·17 claims
- 3682US4407496ALimb exercise deviceJOHNSON DAVID E·Filed 1981·Granted Oct 4, 1983·57 cites·9 claims
- 3781USD583974SMotion-sensing security light and alarmJOHNSON DAVID E·Filed 2008·Granted Dec 30, 2008·27 cites·1 claims
- 3880US9045908B1Operable rampMORRIS DONALD·Filed 2014·Granted Jun 2, 2015·9 cites·5 claims
- 3980US8938837B1Ramp assembly installation methodJOHNSON DAVID·Filed 2012·Granted Jan 27, 2015·8 cites·11 claims
- 4080US8769823B1Ramp assembly installation methodJOHNSON DAVID·Filed 2012·Granted Jul 8, 2014·8 cites·12 claims
- 4180US8434181B1Ramp assembly installation methodJOHNSON DAVID·Filed 2012·Granted May 7, 2013·8 cites·13 claims
- 4279US9580910B1Operable rampMORRIS DONALD·Filed 2015·Granted Feb 28, 2017·7 cites·19 claims
- 4378US8327485B1Counterbalance for a fold out rampMORRIS DONALD·Filed 2011·Granted Dec 11, 2012·11 cites·20 claims
- 4477US9366778B1Pulse induction metal detector with quasi-resonant transmitter and associated methodFIRST TEXAS PRODUCTS LLC·Filed 2014·Granted Jun 14, 2016·4 cites·19 claims
- 4577US8590159B1Ramp assembly installation methodJOHNSON DAVID·Filed 2012·Granted Nov 26, 2013·7 cites·26 claims
- 4677US8359691B2Compact folding slide-out ramp assemblyLIFT U DIVISION HOGAN MFG INC·Filed 2008·Granted Jan 29, 2013·17 cites·10 claims
- 4776US9820899B1Fold out rampMORRIS DONALD·Filed 2013·Granted Nov 21, 2017·7 cites·6 claims
- 4876US8807278B1Hunting stand apparatusGALLOWAY KEVIN S·Filed 2011·Granted Aug 19, 2014·8 cites·8 claims
- 4975US8943631B1Operable rampMORRIS DONALD·Filed 2014·Granted Feb 3, 2015·7 cites·7 claims
- 5075US7326024B2Wheelchair lift assembly having a compact stowed profileLIFT U DIVISION HOGAN MFG INC·Filed 2004·Granted Feb 5, 2008·34 cites·16 claims
Showing the top 50 of 77 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →