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. Educational Testing Service (2 from 222 patents)
2 patents:
1. 8185378 - Method and system for determining text coherence
2. 7720675 - Method and system for determining text coherence