Average Co-Inventor Count = 2.40
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. Mattel, Inc. (3 from 1,702 patents)
3 patents:
1. 4522607 - Toy railroad vehicle with alignment bias
2. 4366645 - Steering mechanism for toy vehicles
3. 4060930 - Toy airplane launcher