Growing community of inventors

Pinson, AL, United States of America

Brent Duffner

Average Co-Inventor Count = 3.26

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

Brent DuffnerGary Click (6 patents)Brent DuffnerBradley Smith (5 patents)Brent DuffnerDerek Cameron (3 patents)Brent DuffnerMartin Webb (1 patent)Brent DuffnerMatt Moore (1 patent)Brent DuffnerAdam Patrick Karnes-Aceves (1 patent)Brent DuffnerThomas Bostany (1 patent)Brent DuffnerEric Chandler Gray (1 patent)Brent DuffnerBrent Duffner (7 patents)Gary ClickGary Click (14 patents)Bradley SmithBradley Smith (5 patents)Derek CameronDerek Cameron (3 patents)Martin WebbMartin Webb (1 patent)Matt MooreMatt Moore (1 patent)Adam Patrick Karnes-AcevesAdam Patrick Karnes-Aceves (1 patent)Thomas BostanyThomas Bostany (1 patent)Eric Chandler GrayEric Chandler Gray (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Voestalpine Nortrak Inc. (3 from 6 patents)

2. Voestalpine Railway Systems Nortrak LLC (3 from 3 patents)

3. Vae Nortrak North America Inc. (1 from 11 patents)

4. Voestalpine Vae Gmbh (1 from 10 patents)


7 patents:

1. 12359377 - Switch point roller assembly

2. 11168446 - Rail fastening apparatus

3. D910487 - Railroad tie

4. 10400397 - Boltless rail brace

5. 9352762 - Dual independent control hydraulic switch machine

6. 9290192 - Spring wing controller

7. 7677466 - Insulated rail joint assembly

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idiyas.com
as of
12/19/2025
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