Average Co-Inventor Count = 2.18
ph-index = 4
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. Thrall Car Manufacturing Company (4 from 64 patents)
4 patents:
1. 4889055 - Railroad car for container transport
2. 4862810 - Railroad car for container transport
3. 4841876 - Railroad container transporting car of increased weight carrying capacity
4. 4807722 - Railroad car for container transport