Average Co-Inventor Count = 3.93
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. Hallmark Cards, Inc. (6 from 233 patents)
6 patents:
1. 11027571 - Recordable greeting card with user-definable touch zones
2. 9934817 - System for recording, sharing, and storing audio
3. 9720640 - Multifunction button
4. 9713397 - Modular display frames and system for magnetically coupled arrangements
5. 9473251 - Transferring audio files
6. D751828 - Picture frame