Average Co-Inventor Count = 3.00
ph-index = 4
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 (4 from 222 patents)
4 patents:
1. 5991595 - Computerized system for scoring constructed responses and methods for
2. 5827070 - System and methods for computer based testing
3. 5565316 - System and method for computer based testing
4. 5513994 - Centralized system and method for administering computer based tests