Average Co-Inventor Count = 2.07
ph-index = 1
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. (3 from 233 patents)
3 patents:
1. 11450239 - Foldable article with sliceform
2. 10569591 - Greeting card having a biasing member
3. 8881439 - Greeting card with spinner activated multimedia content