Average Co-Inventor Count = 1.71
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. Nikon Corporation (4 from 8,889 patents)
2. Nikon Vision Co., Ltd. (1 from 90 patents)
3. Nikon-essilor Co., Ltd. (1 from 22 patents)
6 patents:
1. D816146 - Digital camera
2. D762858 - Hearing aid
3. D705840 - Telescope
4. D677301 - Digital camera
5. D676885 - Telescope
6. D672802 - Digital camera