Growing community of inventors

East Peoria, IL, United States of America

David R Campbell

Average Co-Inventor Count = 5.17

ph-index = 2

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 = 7

David R CampbellTerril James Johnson (4 patents)David R CampbellChristopher P Cherwin (4 patents)David R CampbellWilliam Holdener (4 patents)David R CampbellJonathan Seger (4 patents)David R CampbellEric M Prater (1 patent)David R CampbellAlexander C Striegel (1 patent)David R CampbellAndrew J Gates (1 patent)David R CampbellTeddy E Kingham (1 patent)David R CampbellJon P Wallgren (1 patent)David R CampbellDavid R Campbell (5 patents)Terril James JohnsonTerril James Johnson (46 patents)Christopher P CherwinChristopher P Cherwin (5 patents)William HoldenerWilliam Holdener (4 patents)Jonathan SegerJonathan Seger (4 patents)Eric M PraterEric M Prater (4 patents)Alexander C StriegelAlexander C Striegel (3 patents)Andrew J GatesAndrew J Gates (2 patents)Teddy E KinghamTeddy E Kingham (2 patents)Jon P WallgrenJon P Wallgren (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Caterpillar Inc. (5 from 9,451 patents)


5 patents:

1. 10947696 - Ingress/egress arrangement for machine

2. D786183 - Tread

3. D776035 - Rung

4. D767462 - Step

5. D767463 - Step

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as of
12/13/2025
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