Average Co-Inventor Count = 2.00
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. Ecollege.com (4 from 9 patents)
4 patents:
1. 6684053 - On-line educational system for processing exam questions and answers
2. 6678500 - On-line educational system for grading of assignments and posting grade information in an on-line gradebook
3. 6674992 - On-line educational system for document sharing
4. 6470171 - On-line educational system for display of educational materials