Average Co-Inventor Count = 3.89
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. Nikon Corporation (4 from 8,898 patents)
4 patents:
1. 5758201 - Camera having line of sight detecting device
2. 5745814 - Camera lens shutter unit having a structure which reduces the shutter
3. 5640610 - Camera with a line-of-sight detecting device
4. 5537181 - Camera with an eye-gaze position detecting device