Average Co-Inventor Count = 4.00
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. L'oreal (1 from 5,076 patents)
2. Societe Anonyme Dite: L'oreal (1 from 137 patents)
2 patents:
1. 4333730 - Meta-phenylenediamines, dyeing compositions in which they are present
2. 4330292 - Dyeing compositions for keratin fibres containing meta-phenylenediamines