Average Co-Inventor Count = 4.34
ph-index = 5
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 (10 from 423 patents)
11 patents:
1. D917417 - Phonograph greeting card
2. D905655 - Phonograph greeting card
3. 9802436 - Greeting card with squeeze trigger activation
4. D780260 - Greeting card with window
5. 8950093 - Electronic greeting cards
6. 8312651 - Electronic greeting cards
7. 8205365 - Three dimensional foam greeting cards
8. D661348 - Greeting card
9. 8176663 - Electronic greeting cards and novelties with moveable elements and manual electronic circuit activation
10. D657817 - Greeting card
11. 7802386 - Electronic greeting cards