Average Co-Inventor Count = 5.36
ph-index = 2
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. Hitachi, Ltd. (3 from 42,517 patents)
3 patents:
1. 8842178 - Supervising system for image
2. 8817102 - Camera layout determination support device
3. 6972681 - Monitoring apparatus