Average Co-Inventor Count = 2.00
ph-index = 3
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. Square, Inc. (3 from 748 patents)
2. Block, Inc. (2 from 453 patents)
5 patents:
1. 12045800 - Detecting device presence indication
2. 11288657 - Detecting device presence indication
3. 10504093 - Fraud protection based on presence indication
4. 9911116 - Fraud protection in payment card transactions
5. 9569767 - Fraud protection based on presence indication