Average Co-Inventor Count = 3.20
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. Amsted Rail Company, Inc. (4 from 139 patents)
4 patents:
1. 8925466 - Brake beam assembly for a railway car truck
2. 8910808 - Coupler knuckle
3. 8474578 - Brake beam wear liner
4. 8256585 - Tapered brake beam wear liner