William A. Null — 24 Patents at Invacare

William A. Null has been granted 24 US patents while listed as an inventor at Invacare. The first was granted in 2003 and the most recent in February 2025. William A. Null ranks #168,038 of 4,157,543 US inventors in our database (top 4.0%). Patent records list William A. Null in Nova, OH, US.

Issued Patents All Time

Showing 1–24 of 24 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12226733	Systems and methods for concentrating gas	Matthew E. Monaghan, Pankaj Madhukar Patil	2025-02-18
12172121	System and method for concentrating gas	Alex P. Valentine, Matthew E. Monaghan	2024-12-24
11213441	Suspension for wheeled vehicles	Gerold Goertzen, Robert L. Cuson	2022-01-04	$1,711,000
10512572	Suspension for wheeled vehicles	Gerold Goertzen, Robert L. Cuson	2019-12-24	$8,047,000
9987177	Obstacle traversing wheelchair	Gerold Goertzen	2018-06-05	$6,668,000
9925100	Suspension for wheeled vehicles	Gerold Goertzen, Robert L. Cuson	2018-03-27	$6,894,000
9624918	Pumping device	Gerold Goertzen	2017-04-18	$3,810,000
9364377	Suspension for wheeled vehicles	Gerold Goertzen, Robert L. Cuson	2016-06-14	$4,144,000
9149398	Obstacle traversing wheelchair	Gerold Goertzen	2015-10-06	$4,880,000
9061238	Gas concentrator	Samuel J. Shelnutt	2015-06-23	$3,421,000
8833774	Suspension for wheeled vehicles	Gerold Goertzen, Robert L. Cuson	2014-09-16	$3,019,000
8636089	Obstacle traversing wheelchair	Gerold Goertzen	2014-01-28	$4,477,000
8534679	Suspension for wheeled vehicles	Gerold Goertzen, Robert L. Cuson	2013-09-17	$3,264,000
8172016	Obstacle traversing wheelchair	Gerold Goertzen	2012-05-08	$2,183,000
8062003	System and method for providing oxygen	Gerold Goertzen	2011-11-22	$1,818,000
7597163	Obstacle traversing wheelchair	Gerold Goertzen	2009-10-06	$6,306,000
7419182	Mobility aid	Gerold Goertzen, Bradley Kushner	2008-09-02	$6,871,000
7293801	Self-stabilizing suspension for wheeled vehicles	John E. Bertrand, Gerald Goertzen	2007-11-13	$2,532,000
7219755	Obstacle traversing wheelchair	Gerold Goertzen	2007-05-22
7083195	Suspension with releasable locking system	Gerald Goertzen	2006-08-01	$4,825,000
6935448	Obstacle traversing wheelchair	Gerold Goertzen	2005-08-30	$7,919,000
6923280	Obstacle traversing wheelchair	Gerold Goertzen	2005-08-02	$3,939,000
6851711	Vehicle having an anti-dive/lockout mechanism	Gerald Goertzen	2005-02-08	$7,437,000
6554086	Obstacle traversing wheelchair	Gerold Goertzen	2003-04-29	$6,253,000

William A. Null — 24 Patents

Issued Patents All Time

Patent Widget