Average Co-Inventor Count = 1.00
ph-index = 3
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. Portec, Inc. (3 from 46 patents)
3 patents:
1. 4632308 - Adjustable rail fastener assembly
2. 4306677 - Rail fastener
3. 4304359 - Rail fastener