Average Co-Inventor Count = 2.40
ph-index = 2
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. Hoesch Aktiengesellschaft (2 from 49 patents)
2 patents:
1. 4714195 - Track spike with a single or double shaft
2. 4573811 - Center-free large rolling bearing