Inventor · disambiguated record
Duwayne E. Kramer, Jr.
Also filed as: KRAMER DUWAYNE E · KRAMER JR DUWAYNE E
8 granted patents·1 pending application·546 citations·filing 1983–2009
91Inventor score
Top patents by PatentIndex Score
9 records- 0197US4570739APersonal mobility vehicleBURKE INC·Filed 1983·Granted Feb 18, 1986·140 cites·17 claims
- 0293US6494474B1Adjustable wheelchair anti-tip assemblyBURKE MOBILITY PRODUCTS INC·Filed 1999·Granted Dec 17, 2002·99 cites·10 claims
- 0392US7942445B2Personal mobility vehicle with anti-tip suspensionBURKE INC·Filed 2009·Granted May 17, 2011·36 cites·20 claims
- 0486US5816614ATiller assembly for personal mobility vehiclesBURKE INC·Filed 1997·Granted Oct 6, 1998·76 cites·20 claims
- 0578US7562903B2Personal mobility vehicle with anti-tip suspensionBURKE INC·Filed 2006·Granted Jul 21, 2009·12 cites·2 claims
- 0678US6220382B1Powered wheelchair with separating frameBURKE MOBILITY PRODUCTS INC·Filed 1998·Granted Apr 24, 2001·79 cites·6 claims
- 0767US6290011B1Front wheel/rear wheel drive convertible wheelchairBURKE MOBILITY PRODUCTS INC·Filed 1999·Granted Sep 18, 2001·56 cites·14 claims
- 0866US4834409APersonal mobility vehicle with expansible wheel base and wheel trackKRAMER DUWAYNE E·Filed 1987·Granted May 30, 1989·48 cites·10 claims
- 0943US2007089238A1Multipositional bariatric bedLEISURE LIFT INC·Filed 2005·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →