Average Co-Inventor Count = 3.43
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. Acf Industries, Incorporated (2 from 400 patents)
2 patents:
1. 4608931 - Filament wound railway hopper car
2. 4497258 - Transverse bulkhead connection to filament wound vehicle body sides