Average Co-Inventor Count = 2.44
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. American Greetings Corporation (8 from 423 patents)
8 patents:
1. 9481195 - Greeting card with dial activated audio
2. D766362 - Greeting card with dial
3. 9156300 - Greeting card with scrolling scene
4. 9061539 - Greeting card with scrolling scene
5. 8904678 - Voice amplified foam music greeting card
6. D684214 - Foam music greeting card design
7. D665021 - Telephone shaped pull-out greeting card
8. D662543 - Pop up greeting card