Average Co-Inventor Count = 3.00
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. Portec, Inc. (2 from 46 patents)
2 patents:
1. 5394958 - Rail lubrication apparatus
2. 5348120 - Rail lubrication apparatus