Average Co-Inventor Count = 3.60
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. The Nielsen Comapny (us), LLC (8 from 2,170 patents)
2. Other (1 from 832,880 patents)
9 patents:
1. 12170818 - Methods and apparatus to calibrate audience measurement ratings based on return path data
2. 11716511 - Methods and apparatus to calibrate audience measurement ratings based on return path data
3. 11405690 - Methods and apparatus to calibrate audience measurement ratings based on return path data
4. 11089365 - Methods and apparatus to calibrate audience measurement ratings based on return path data
5. 10560744 - Methods and apparatus to calibrate audience measurement ratings based on return path data
6. 10277944 - Methods and apparatus to calibrate audience measurement ratings based on return path data
7. 9172997 - Methods and apparatus to collect media exposure information
8. 8666303 - Methods and apparatus to collect media exposure information
9. 8326212 - Methods and apparatus to collect media exposure information