Growing community of inventors

Plymouth, MI, United States of America

Donald J Blunden

Average Co-Inventor Count = 1.41

ph-index = 6

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 = 218

Donald J BlundenMichael J Rench (3 patents)Donald J BlundenRalph Hartman Schorr (1 patent)Donald J BlundenJames E Black, Jr (1 patent)Donald J BlundenDonald J Blunden (6 patents)Michael J RenchMichael J Rench (9 patents)Ralph Hartman SchorrRalph Hartman Schorr (8 patents)James E Black, JrJames E Black, Jr (7 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Thrall Car Manufacturing Company (5 from 64 patents)

2. Thrall Manufacturing Company (1 from 1 patent)


6 patents:

1. 5657698 - Pivot plate assembly for articulated railway cars

2. 4979856 - Vehicle cantilever chock block apparatus for railroad car transport of

3. 4838743 - Vehicle cantilever chock block apparatus for railroad car transport of

4. 4679974 - Vehicle chock block apparatus for railroad car transport of vehicles

5. 4674929 - Railroad car with chock block apparatus for securing vehicles being

6. 4668140 - Railroad car with chock block apparatus for securing transported vehicles

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as of
12/12/2025
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