Average Co-Inventor Count = 6.00
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. A.c. Nielsen Company (2 from 43 patents)
2. Shoppertrack Rct Corporation (1 from 1 patent)
3. A. C. Nielson Company (1 from 1 patent)
4 patents:
1. 7415510 - System for indexing pedestrian traffic
2. 6484158 - Dynamic rule based market research database
3. 6092069 - Market research database containing separate product and naked product
4. 6078922 - Market research database having historical control designator