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