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. Play Visions, Inc. (2 from 2 patents)
2. Hasbro, Inc. (1 from 497 patents)
2 patents:
1. 6264574 - Game ball and method of using game ball
2. D432191 - Toy football