Average Co-Inventor Count = 6.00
ph-index = 3
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 (3 from 222 patents)
3 patents:
1. 6366759 - System and method for computer-based automatic essay scoring
2. 6181909 - System and method for computer-based automatic essay scoring
3. 6115683 - Automatic essay scoring system using content-based techniques