Average Co-Inventor Count = 4.00
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. Stonel Corporation (2 from 4 patents)
2 patents:
1. 5647396 - Modular valve position indicator
2. 5623963 - Modular valve position indicator