Average Co-Inventor Count = 2.00
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. 4313458 - Restricted movement valve seats for an expanding gate valve
2. 4246928 - Restricted movement valve seats for an expanding gate valve