Average Co-Inventor Count = 4.00
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. (6 from 233 patents)
6 patents:
1. 11499706 - Apparatus for producing light and sound
2. 10352553 - Apparatus for producing light and sound
3. 9145236 - Article with a latching mechanism
4. 9144258 - Realistically opening artificial flower
5. 9039483 - Print-level sensing for interactive play with a printed image
6. D616929 - Video display greeting card