Average Co-Inventor Count = 5.02
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 (12 from 423 patents)
12 patents:
1. 8763286 - Sound generating pull-out greeting cards with removable panels
2. 8601726 - Three dimensional foam greeting card
3. 8567101 - Sing-along greeting cards
4. 8438763 - Three dimensional illuminated greeting cards
5. 8418384 - Pop-up musical greeting cards
6. 8316565 - Sound generating pull-out greeting cards with removable panels
7. 8312652 - Sing-a-long greeting cards
8. 8300873 - Low profile greeting card speaker
9. 8281507 - Three dimensional illuminated greeting cards
10. D657415 - Three dimensional greeting card
11. 8135161 - Low profile greeting card speaker
12. D653287 - Three dimensional greeting card