Growing community of inventors

St. Charles, MO, United States of America

John Birkmann

Average Co-Inventor Count = 4.00

ph-index = 1

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 = 2

John BirkmannRoger Dalske (1 patent)John BirkmannSpencer Ashie-Winns (1 patent)John BirkmannHariharanath Kavuri (1 patent)John BirkmannJohn Birkmann (1 patent)Roger DalskeRoger Dalske (4 patents)Spencer Ashie-WinnsSpencer Ashie-Winns (3 patents)Hariharanath KavuriHariharanath Kavuri (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. American Railcar Industries, Inc. (1 from 14 patents)


1 patent:

1. 9789882 - Door sealing assembly for a railcar and method of assembling the same

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as of
12/13/2025
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