Growing community of inventors

Morton, IL, United States of America

David R Roley

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

David R Roley ↔ Charles F Sieck (1 patent)David R Roley ↔ David G Young (1 patent)David R Roley ↔ Doyle G Heyveld (1 patent)David R Roley ↔ Paul D Fotsch (1 patent)David R Roley ↔ Michael D Chatham (1 patent)David R Roley ↔ Edward P Kelley (1 patent)David R Roley ↔ Walter E Lohmann, Jr (1 patent)David R RoleyDavid R Roley (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)Michael D ChathamMichael D Chatham (1 patent)Edward P KelleyEdward P Kelley (1 patent)Walter E Lohmann, JrWalter E Lohmann, Jr (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Caterpillar Inc. (1 from 9,507 patents)


1 patent:

1. 5531122 - Fatigue analysis and warning system

Please report any incorrect information to support@idiyas.com
idiyas.com
as of
1/20/2026
Loading…