Growing community of inventors

Ypsilanti, MI, United States of America

James C Robertson

Average Co-Inventor Count = 1.85

ph-index = 4

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 = 75

James C RobertsonChandrakant D Ravani (2 patents)James C RobertsonDavid A Stoller, Sr (1 patent)James C RobertsonJaroslaw J Rostafinski (1 patent)James C RobertsonTibor Matyas (1 patent)James C RobertsonJames C Robertson (4 patents)Chandrakant D RavaniChandrakant D Ravani (3 patents)David A Stoller, SrDavid A Stoller, Sr (4 patents)Jaroslaw J RostafinskiJaroslaw J Rostafinski (2 patents)Tibor MatyasTibor Matyas (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Portec, Inc. (4 from 46 patents)


4 patents:

1. 4437410 - Pivotal slidable vehicle end enclosure

2. 4263853 - Rail car end door positioning keeper assembly

3. 4084516 - Foldable slidable vehicle end enclosure

4. 4059055 - Railway car hinge-deck lock

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idiyas.com
as of
12/12/2025
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