Inventor · disambiguated record
David Cheng Cheng
Also filed as: CHENG DAVID · CHENG DAVID CHENG
7 granted patents·72 citations·filing 2007–2012
86Inventor score
Technology areasA61G
Top patents by PatentIndex Score
7 records- 0185USD589411SWheelchair memberPDG INC·Filed 2007·Granted Mar 31, 2009·38 cites·1 claims
- 0277US8132823B2Reconfigurable tilt wheelchairBALCOM NANCY·Filed 2010·Granted Mar 13, 2012·8 cites·1 claims
- 0376US7871094B2Reconfigurable tilt wheelchairPDG INC·Filed 2007·Granted Jan 18, 2011·12 cites·10 claims
- 0472US8424896B2Telescoping crossbar assemblyBALCOM NANCY·Filed 2012·Granted Apr 23, 2013·5 cites·4 claims
- 0569US8511699B2Reconfigurable tilt wheelchairBALCOM NANCY·Filed 2012·Granted Aug 20, 2013·4 cites·7 claims
- 0662US8579315B2Reconfigurable tilt wheelchairPDG PRODUCT DESIGN GROUP INC·Filed 2012·Granted Nov 12, 2013·3 cites·6 claims
- 0761US8336898B2Reconfigurable tilt wheelchairBALCOM NANCY·Filed 2012·Granted Dec 25, 2012·2 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →