Average Co-Inventor Count = 1.80
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. (3 from 1,703 patents)
3 patents:
1. 4327929 - Ride-on tricycle
2. D261670 - Toy calliope or similar article
3. 4128949 - Toy clock using marbles