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. Sega Enterprises, Ltd. (3 from 264 patents)
2. Kabushiki Kaisha Sega Enterprises (1 from 145 patents)
4 patents:
1. 6297812 - Information display system for electronically reading a book
2. 6052117 - Information display system for electronically reading a book
3. 5739814 - Information storage system and book device for providing information in
4. 5485176 - Information display system for electronically reading a book