Average Co-Inventor Count = 1.64
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.
Company Filing History:
1. Voestalpine Nortrak Inc. (3 from 6 patents)
3 patents:
1. 10711406 - Keyway tie
2. 10458071 - Method of installing interface pad on concrete ties
3. 8752773 - Grade crossing interface pad