Inventor · disambiguated record
Douglas G. Willis
Also filed as: WILLIS DOUGLAS G
10 granted patents·4 pending applications·90 citations·filing 1994–2022
88Inventor score
Top patents by PatentIndex Score
14 records- 0191US9844980B1Mobility device having walking wheel assembly for moving an object across non-planar areasWILLIS DOUGLAS G·Filed 2016·Granted Dec 19, 2017·9 cites·20 claims
- 0285US7506405B2Quad-caster carriage with forklift attachmentMARTIN MOBILE COMPANY LLC·Filed 2006·Granted Mar 24, 2009·16 cites·35 claims
- 0380US7500285B2Articulated casterMARTIN MOBILE COMPANY LLC·Filed 2006·Granted Mar 10, 2009·10 cites·18 claims
- 0476US7146683B1Articulated casterMARTIN MOBILE COMPANY LLC·Filed 2004·Granted Dec 12, 2006·18 cites·18 claims
- 0569US10137731B2Wheel padWILLIS DOUGLAS G·Filed 2011·Granted Nov 27, 2018·4 cites·16 claims
- 0668US9950564B2Articulating carriageWILLIS DOUGLAS G·Filed 2010·Granted Apr 24, 2018·4 cites·20 claims
- 0764US5507069AArticulated casterFiled 1994·Granted Apr 16, 1996·26 cites·21 claims
- 0861US11679824B1Fluid-filled track wheel for improved movement of an object across a non-planar areaWILLIS DOUGLAS G·Filed 2019·Granted Jun 20, 2023·1 cites·8 claims
- 0960US9744807B2Wheel float with improved pivot jointsWILLIS DOUGLAS G·Filed 2012·Granted Aug 29, 2017·2 cites·20 claims
- 1052US11702123B1Braking and steering control apparatus for securing and moving an object on a surfaceWILLIS DOUGLAS G·Filed 2022·Granted Jul 18, 2023·0 cites·20 claims
- 1147US2007220704A1Articulated caster with pivot box jointWILLIS DOUGLAS G·Filed 2006·Application pending·0 cites
- 1247US2006196006A1Articulated casterWILLIS DOUGLAS G·Filed 2006·Application pending·0 cites
- 1347US2007039786A1Articulated castor braking systemWILLIS DOUGLAS G·Filed 2005·Application pending·0 cites
- 1439US2007221419A1Detachable drive unit for mobile carriageWILLIS DOUGLAS G·Filed 2006·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →