Average Co-Inventor Count = 2.19
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. Hallmark Cards, Inc. (22 from 233 patents)
22 patents:
1. 11854436 - Greeting card lever and spiral lift
2. 11721243 - Removably securing a sliceform to a foldable article
3. 11600204 - Removably securing a sliceform to a foldable article
4. 11514820 - Greeting card lever and spiral lift
5. 11450239 - Foldable article with sliceform
6. 11443655 - Removably securing a sliceform to a foldable article
7. 11238758 - Removably securing a sliceform to a foldable article
8. 11004361 - Flexible drive shaft for greeting cards and the like
9. 10984680 - Greeting card lever and spiral lift
10. 10974863 - Collapsible virtual reality viewer assembly
11. 10713975 - Removably securing a sliceform to a foldable article
12. 10573203 - Gift card presenter for greeting cards
13. 10515568 - Flexible drive shaft for greeting cards and the like
14. 10329047 - Collapsible virtual reality viewer assembly
15. 10140890 - Gift card presenter for greeting cards