Average Co-Inventor Count = 2.40
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. (2 from 6 patents)
2. Voestalpine Railway Systems Nortrak LLC (3 patents)
3. Voestalpine Railway Systems Gmbh (2 patents)
2 patents:
1. 10711406 - Keyway tie
2. 10458071 - Method of installing interface pad on concrete ties