Average Co-Inventor Count = 1.33
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. Mattel, Inc. (2 from 1,702 patents)
2 patents:
1. 4372557 - Electronic baseball game
2. 4341383 - Electronic basketball game