Average Co-Inventor Count = 6.18
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. Kao Corporation (3 from 3,600 patents)
3 patents:
1. 5508025 - Naphthalenemethylenemalonic diesters, and UV absorbers and cosmetic
2. 5191121 - Aroyl ketone derivative, UV ray absorber comprising the same, and
3. 5146002 - Aroyl ketone derivative, UV ray absorber comprising the same, and