Growing community of inventors

Crofton, NE, United States of America

Derrick K Barr

Average Co-Inventor Count = 3.00

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

Derrick K Barr ↔ David Joseph Schaefer (1 patent)Derrick K Barr ↔ Christopher J McCallum (1 patent)Derrick K Barr ↔ Christopher J Mccallum (1 patent)Derrick K BarrDerrick K Barr (1 patent)David Joseph SchaeferDavid Joseph Schaefer (8 patents)Christopher J McCallumChristopher J McCallum (2 patents)Christopher J MccallumChristopher J Mccallum (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Other (1 from 832,891 patents)


1 patent:

1. 8141498 - Rail car extension system

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12/30/2025
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