Average Co-Inventor Count = 2.40
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 (4 from 423 patents)
4 patents:
1. 10150322 - Greeting card with tote bag
2. 9987871 - Greeting card with motorized gift card holder
3. D815201 - Ferris wheel greeting card
4. 9738109 - Greeting cards with suspended motion