Average Co-Inventor Count = 2.29
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. Information Resources, Inc. (2 from 24 patents)
2. Videocart, Inc. (2 from 2 patents)
4 patents:
1. 5490060 - Passive data collection system for market research data
2. 5295064 - Intelligent shopping cart system having cart position determining and
3. 5287266 - Intelligent shopping cart system having cart position determining
4. 4973952 - Shopping cart display system