Average Co-Inventor Count = 2.67
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. Union Pacific Railroad Company (1 from 29 patents)
2. Owen Industries, Inc. (1 from 5 patents)
2 patents:
1. 9074325 - Portable temporary turnout system for rails
2. 6055693 - Railway short span trestle bridge