Average Co-Inventor Count = 5.77
ph-index = 5
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. (3 from 40 patents)
2. Other (1 from 832,718 patents)
3. The Arbitron Company (1 from 12 patents)
5 patents:
1. 7961881 - Apparatus and methods for including codes in audio signals
2. 6996237 - Apparatus and methods for including codes in audio signals
3. 6421445 - Apparatus and methods for including codes in audio signals
4. 5764763 - Apparatus and methods for including codes in audio signals and decoding
5. 5450490 - Apparatus and methods for including codes in audio signals and decoding