Average Co-Inventor Count = 1.20
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 (3 from 47 patents)
3 patents:
1. D247517 - Toy fork lift
2. 3962820 - Connection for miniature toy vehicle parts
3. 3942285 - Miniature toy vehicle construction