Average Co-Inventor Count = 1.75
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. American Greetings Corporation (7 from 423 patents)
7 patents:
1. D801428 - Vending machine greeting card
2. D766365 - Insect greeting card
3. D765781 - Christmas tree greeting card
4. 9302528 - Pop-up greeting cards
5. D734143 - Combined game coin and package
6. D727721 - Combined game coin and package
7. D720210 - Combined game coin and package