Average Co-Inventor Count = 3.75
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. Abc Rail Products Corporation (2 from 15 patents)
2 patents:
1. 5746400 - Rail crossing assembly
2. 5653408 - Direct support frog assembly