Average Co-Inventor Count = 3.00
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. Alcan International Limited (1 from 495 patents)
2. Thrall Car Manufacturing Company (1 from 64 patents)
1 patent:
1. 4930427 - Railroad gondola or hopper car, particularly a coal car