Average Co-Inventor Count = 4.44
ph-index = 6
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 (15 from 423 patents)
15 patents:
1. 9849712 - Hinged greeting cards and gift card holders
2. 9186927 - Greeting card with spring loaded slide track activated audio
3. 8950093 - Electronic greeting cards
4. 8726547 - Greeting card with spring loaded slide track audio trigger
5. 8601726 - Three dimensional foam greeting card
6. 8567101 - Sing-along greeting cards
7. 8374878 - Audio envelopes
8. 8312651 - Electronic greeting cards
9. 8312652 - Sing-a-long greeting cards
10. D664194 - Sweater shaped greeting card
11. D643061 - Pull apart greeting card
12. D642612 - Lion pull apart greeting card
13. D642613 - Monster pull apart greeting card
14. D641779 - Decorative pull apart greeting card
15. 7802386 - Electronic greeting cards