Average Co-Inventor Count = 7.00
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. Ctba Associates (2 from 3 patents)
2. Control Data Corporation (1 from 210 patents)
3 patents:
1. 4816904 - Television and market research data collection system and method
2. 4658290 - Television and market research data collection system and method
3. 4546382 - Television and market research data collection system and method