Growing community of inventors

Soystown, PA, United States of America

David A Lohr

Average Co-Inventor Count = 2.00

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 = 15

David A LohrGregory P Josephson (3 patents)David A LohrDavid A Lohr (3 patents)Gregory P JosephsonGregory P Josephson (6 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Jac Operations, Inc. (3 from 23 patents)


3 patents:

1. 9862393 - Open top hopper railcar with biased door seal and enlarged contoured end door

2. 9096238 - Open top hopper railcar with biased door seal and enlarged contoured end door

3. 8640631 - Side contoured open top hopper railcar with biased door seal and enlarged contoured end door

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as of
12/17/2025
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