Growing community of inventors

Delta, Canada

David Cheng

Average Co-Inventor Count = 6.32

ph-index = 4

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 68

David ChengTorr Brown (7 patents)David ChengDavid James Harding (6 patents)David ChengPhil Mundy (6 patents)David ChengNancy Balcom (6 patents)David ChengLouis Belanger (6 patents)David ChengJanusz Krawczynski (6 patents)David ChengDavid Harding (2 patents)David ChengChris Morse (1 patent)David ChengJae-won Sim (1 patent)David ChengDavid Cheng (7 patents)Torr BrownTorr Brown (7 patents)David James HardingDavid James Harding (14 patents)Phil MundyPhil Mundy (8 patents)Nancy BalcomNancy Balcom (7 patents)Louis BelangerLouis Belanger (6 patents)Janusz KrawczynskiJanusz Krawczynski (6 patents)David HardingDavid Harding (2 patents)Chris MorseChris Morse (1 patent)Jae-won SimJae-won Sim (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Pdg Product Design Group Inc. (5 from 5 patents)

2. Pdg, Inc. (2 from 5 patents)


7 patents:

1. 8579315 - Reconfigurable tilt wheelchair

2. 8511699 - Reconfigurable tilt wheelchair

3. 8424896 - Telescoping crossbar assembly

4. 8336898 - Reconfigurable tilt wheelchair

5. 8132823 - Reconfigurable tilt wheelchair

6. 7871094 - Reconfigurable tilt wheelchair

7. D589411 - Wheelchair member

Please report any incorrect information to support@idiyas.com
idiyas.com
as of
1/1/2026
Loading…