Average Co-Inventor Count = 2.00
ph-index = 1
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. Cengage Learning, Inc. (1 from 5 patents)
2. Advanced Instructional Systems, Inc. (1 from 1 patent)
2 patents:
1. 10019909 - Freeform mathematical parsing and grading method and system
2. 9547996 - Freeform mathematical parsing and grading method and system