Average Co-Inventor Count = 2.40
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 Insights, Inc. (4 from 19 patents)
4 patents:
1. D377665 - Electronic teaching quizzer
2. D376818 - Talking globe base
3. D364643 - Electronic quiz unit for attachment to books
4. D361784 - Electronic educational game board