Growing community of inventors

Grove City, PA, United States of America

James D Hart

Average Co-Inventor Count = 1.68

ph-index = 3

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 = 43

James D HartWilliam A Wiles (2 patents)James D HartMark L Saylor (2 patents)James D HartRussell L Long (2 patents)James D HartJoseph C Lightner, Jr (1 patent)James D HartJames D Hart (7 patents)William A WilesWilliam A Wiles (2 patents)Mark L SaylorMark L Saylor (2 patents)Russell L LongRussell L Long (2 patents)Joseph C Lightner, JrJoseph C Lightner, Jr (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Trinity Industries, Inc. (4 from 97 patents)

2. Jac Patent Company (2 from 10 patents)

3. Greenville Steel Car Co. (1 from 5 patents)


7 patents:

1. 7824140 - Aluminum vehicle carrier railcar

2. 7094013 - Aluminum vehicle carrier railcar

3. 5031543 - Side panel anti-abrasion envelope

4. 4964347 - Side panel assembly for an auto rack car

5. 4924780 - Sliding end panels for a rail car

6. 4715291 - Railroad car door bottom guide rail system

7. 4212252 - Gondola-type railway car

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as of
1/8/2026
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