Average Co-Inventor Count = 3.46
ph-index = 3
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 Corporation (4 from 134 patents)
2. Kabushiki Kaisha Sega Enterprises (1 from 145 patents)
5 patents:
1. 8191896 - Card game device, card data reader, card game control method, recording medium, program, and card
2. 8172229 - Card game device, card data reader, card game control method, recording medium, program, and card
3. 8020869 - Card game device, card data reader, card game control method, recording medium, program, and card
4. 7431297 - Card game device, card data reader, card game control method, recording medium, program, and card
5. 6579173 - Game score determination apparatus and method