Average Co-Inventor Count = 1.60
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. Tonka Corporation (4 from 47 patents)
4 patents:
1. D258222 - Toy jack
2. 4173095 - Toy vehicle
3. D253185 - Toy truck cab
4. D253193 - Toy vehicle