Growing community of inventors

Quincy, IL, United States of America

Terry Johnson

Average Co-Inventor Count = 2.00

ph-index = 1

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 = 3

Terry JohnsonTyler Marquardt (1 patent)Terry JohnsonTerry Johnson (1 patent)Tyler MarquardtTyler Marquardt (2 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. The Knapheide Manufacturing Company (1 from 7 patents)


1 patent:

1. 8562278 - Side-discharge chipper body

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as of
12/13/2025
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