Average Co-Inventor Count = 7.00
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. Arbitron Inc. (4 from 40 patents)
2. The Nielsen Comapny (us), LLC (1 from 2,170 patents)
5 patents:
1. 8849182 - Gathering data concerning publication usage
2. 8444180 - Gathering data concerning publication usage
3. 7962315 - Gathering data concerning publication usage
4. 7650793 - Gathering data concerning publication usage
5. 7272982 - Gathering data concerning publication usage