Average Co-Inventor Count = 3.91
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. Kyowa Hakko Kogyo Co., Ltd. (3 from 730 patents)
3 patents:
1. 5468474 - N-acylglutamine derivatives and cosmetic compositions
2. 5380359 - Cosmetics based on naturally derived melanin-coated pigments
3. 5112613 - Cosmetic composition