Average Co-Inventor Count = 9.90
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. 8202097 - Computer based test item generation
2. 6056556 - Computer-based simulation examination of architectural practice