Growing community of inventors

Bloomington, IL, United States of America

Michael D Chatham

Average Co-Inventor Count = 8.00

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 = 143

Michael D ChathamCharles F Sieck (1 patent)Michael D ChathamDavid G Young (1 patent)Michael D ChathamDoyle G Heyveld (1 patent)Michael D ChathamPaul D Fotsch (1 patent)Michael D ChathamEdward P Kelley (1 patent)Michael D ChathamDavid R Roley (1 patent)Michael D ChathamWalter E Lohmann, Jr (1 patent)Michael D ChathamMichael D Chatham (1 patent)Charles F SieckCharles F Sieck (10 patents)David G YoungDavid G Young (4 patents)Doyle G HeyveldDoyle G Heyveld (3 patents)Paul D FotschPaul D Fotsch (1 patent)Edward P KelleyEdward P Kelley (1 patent)David R RoleyDavid R Roley (1 patent)Walter E Lohmann, JrWalter E Lohmann, Jr (1 patent)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Caterpillar Inc. (1 from 9,500 patents)


1 patent:

1. 5531122 - Fatigue analysis and warning system

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1/15/2026
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