Growing community of inventors

Griffith, IN, United States of America

Dennis B Marsden

Average Co-Inventor Count = 1.20

ph-index = 2

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 = 29

Dennis B MarsdenKeith J Hallam (1 patent)Dennis B MarsdenDennis B Marsden (3 patents)Keith J HallamKeith J Hallam (5 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Pullman Incorporated (3 from 228 patents)


3 patents:

1. 4232793 - Car coupling arrangement for railway passenger cars

2. 4224878 - Hopper car door locking mechanism

3. 4141093 - Sleeping berth for passenger car compartment

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as of
12/18/2025
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