Average Co-Inventor Count = 2.18
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. Hallmark Cards, Inc. (4 from 233 patents)
4 patents:
1. 9668593 - Modular display tower
2. 8671548 - Method for providing a convertible card row
3. 8333284 - Clip for convertible card row
4. 8132679 - Convertible card row