Average Co-Inventor Count = 5.04
ph-index = 5
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. (5 from 1,703 patents)
5 patents:
1. 7762867 - Lever and wheel activated toy vehicles
2. 6896574 - Magnetically coupled toy vehicles
3. 6764376 - Spring-driven toy vehicle
4. 6663463 - Sound activated toy vehicle
5. 6565411 - Key activated toy vehicle