Average Co-Inventor Count = 2.45
ph-index = 2
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.
Company Filing History:
1. Amsted Industries Inc. (2 from 317 patents)
2. Amsted Rail Company, Inc. (1 from 139 patents)
3 patents:
1. 10189488 - Railway freight car draft gear assembly
2. 6681943 - Railcar draft gear assembly and system
3. 6446820 - Railcar draft gear assembly and system