Average Co-Inventor Count = 3.00
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. American Greetings Corporation (2 from 423 patents)
2 patents:
1. D276173 - Toy trolley
2. D275212 - Wheeled figure toy