Average Co-Inventor Count = 2.67
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. Other (4 from 832,812 patents)
4 patents:
1. 7548899 - Method and system for information retrieval based on menu selections
2. 7201580 - Inexpensive computer-aided learning methods and apparatus for learners
3. 6685478 - Inexpensive computer-aided learning methods and apparatus for learners
4. 6398556 - Inexpensive computer-aided learning methods and apparatus for learners