Average Co-Inventor Count = 4.80
ph-index = 4
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. D549130 - Plush advent tree
2. 7211305 - Holiday countdown interactive display
3. D528037 - Plush advent tree
4. 6153311 - Soft sculpted article and method of making same