Average Co-Inventor Count = 1.50
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. Other (3 from 832,718 patents)
3 patents:
1. 5605282 - Tire railroad ties
2. 4925356 - Self-unloading train for bulk commodities
3. 4795301 - Low-center-of-gravity self-unloading train for bulk commodities