Inventor · disambiguated record
William A. Null
Also filed as: NULL JR WILLIAM A · NULL WILLIAM A · NULL WILLIAM A JR
24 granted patents·5 pending applications·989 citations·filing 2000–2024
97Inventor score
Top patents by PatentIndex Score
29 records- 0199US6554086B1Obstacle traversing wheelchairINVACARE CORP·Filed 2000·Granted Apr 29, 2003·191 cites·30 claims
- 0298US7597163B2Obstacle traversing wheelchairINVACARE CORP·Filed 2006·Granted Oct 6, 2009·55 cites·34 claims
- 0397US8172016B2Obstacle traversing wheelchairGOERTZEN GEROLD·Filed 2009·Granted May 8, 2012·63 cites·27 claims
- 0497US7293801B2Self-stabilizing suspension for wheeled vehiclesINVACARE CORP·Filed 2005·Granted Nov 13, 2007·77 cites·21 claims
- 0597US6935448B2Obstacle traversing wheelchairINVACARE CORP·Filed 2003·Granted Aug 30, 2005·70 cites·12 claims
- 0697US6923280B2Obstacle traversing wheelchairINVACARE CORP·Filed 2003·Granted Aug 2, 2005·62 cites·22 claims
- 0796US9987177B2Obstacle traversing wheelchairINVACARE CORP·Filed 2015·Granted Jun 5, 2018·16 cites·13 claims
- 0896US8062003B2System and method for providing oxygenGOERTZEN GEROLD·Filed 2005·Granted Nov 22, 2011·55 cites·22 claims
- 0995US6851711B2Vehicle having an anti-dive/lockout mechanismINVACARE CORP·Filed 2003·Granted Feb 8, 2005·131 cites·80 claims
- 1094US9925100B2Suspension for wheeled vehiclesINVACARE CORP·Filed 2016·Granted Mar 27, 2018·11 cites·7 claims
- 1194US9364377B2Suspension for wheeled vehiclesINVACARE CORP·Filed 2014·Granted Jun 14, 2016·20 cites·4 claims
- 1294US7219755B2Obstacle traversing wheelchairINVACRE CORP·Filed 2005·Granted May 22, 2007·61 cites·28 claims
- 1393US10512572B2Suspension for wheeled vehiclesINVACARE CORP·Filed 2018·Granted Dec 24, 2019·10 cites·10 claims
- 1493US8833774B2Suspension for wheeled vehiclesINVACARE CORP·Filed 2013·Granted Sep 16, 2014·20 cites·20 claims
- 1590US7083195B2Suspension with releasable locking systemINVACARE CORP·Filed 2003·Granted Aug 1, 2006·79 cites·13 claims
- 1689US9624918B2Pumping deviceINVACARE CORP·Filed 2013·Granted Apr 18, 2017·8 cites·7 claims
- 1788US9149398B2Obstacle traversing wheelchairINVACARE CORP·Filed 2014·Granted Oct 6, 2015·10 cites·9 claims
- 1888US8636089B2Obstacle traversing wheelchairGOERTZEN GEROLD·Filed 2012·Granted Jan 28, 2014·11 cites·21 claims
- 1988US8534679B2Suspension for wheeled vehiclesGOERTZEN GEROLD·Filed 2006·Granted Sep 17, 2013·24 cites·40 claims
- 2085US11213441B2Suspension for wheeled vehiclesINVACARE CORP·Filed 2019·Granted Jan 4, 2022·5 cites·20 claims
- 2176US2025073630A1System and method for concentrating gasVENTEC LIFE SYSTEMS INC·Filed 2024·Application pending·0 cites
- 2274US12226733B2Systems and methods for concentrating gasINVACARE CORP·Filed 2021·Granted Feb 18, 2025·0 cites·23 claims
- 2371US9061238B2Gas concentratorINVACARE CORP·Filed 2013·Granted Jun 23, 2015·2 cites·22 claims
- 2468US12172121B2System and method for concentrating gasINVACARE CORP·Filed 2021·Granted Dec 24, 2024·0 cites·17 claims
- 2563US7419182B2Mobility aidINVACARE CORP·Filed 2006·Granted Sep 2, 2008·8 cites·18 claims
- 2645US2012299260A1Suspension for wheeled vehiclesGOERTZEN GEROLD·Filed 2012·Application pending·0 cites
- 2743US2006071440A1Mid drive scooterFOUGHT GERALD E·Filed 2004·Application pending·0 cites
- 2840US2011038740A1CompressorINVACARE CORP·Filed 2010·Application pending·0 cites
- 2939US2006021806A1Obstacle traversing wheelchairINVACARE CORP·Filed 2005·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →