Average Co-Inventor Count = 1.25
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. International Business Machines Corporation (3 from 164,135 patents)
2. New Check Corporation (1 from 1 patent)
4 patents:
1. 7229015 - Self-checkout system
2. 7048184 - Multiple self-checkout system having integrated payment device
3. 6991066 - Customized self-checkout system
4. 6497362 - Method and apparatus for wireless assistance for self-service checkout