Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
DJ

DuWayne E. Kramer, Jr.

BUBurke: 4 patents #2 of 29Top 7%
BPBurke Mobility Products: 3 patents #1 of 8Top 15%
Mission, KS: #8 of 82 inventorsTop 10%
Kansas: #1,250 of 12,005 inventorsTop 15%
Overall (All Time): #655,526 of 4,157,543Top 20%
8 Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
7942445 Personal mobility vehicle with anti-tip suspension Brian W. Mellies 2011-05-17
7562903 Personal mobility vehicle with anti-tip suspension Brian W. Mellies 2009-07-21
6494474 Adjustable wheelchair anti-tip assembly 2002-12-17
6290011 Front wheel/rear wheel drive convertible wheelchair John T. Langaker, Jerry L. Traylor, James Ernst 2001-09-18
6220382 Powered wheelchair with separating frame Jerry L. Traylor, James Ernst 2001-04-24
5816614 Tiller assembly for personal mobility vehicles James Ernst, Jerry L. Traylor, James C. Hile 1998-10-06
4834409 Personal mobility vehicle with expansible wheel base and wheel track 1989-05-30
4570739 Personal mobility vehicle 1986-02-18