Average Co-Inventor Count = 1.60
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. Smith International, Inc. (2 from 1,426 patents)
2 patents:
1. 4653318 - Electronic stator measurement device
2. 4574894 - Ball actuable circulating dump valve