Average Co-Inventor Count = 2.82
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. Loreal Sa (3 from 978 patents)
2. L'oreal (1 from 5,092 patents)
4 patents:
1. 7132543 - Para-phenylenediamine derivatives containing a disubstituted pyrrolidinyl group bearing a cationic radical, and use of the same for dyeing keratin fibers
2. 7132534 - Para-phenylenediamine derivatives containing a pyrrolidyl group, and use of these derivatives for coloring keratin fibers
3. 6946005 - Pyrrolidinyl-substituted para-phenylenediamine derivatives substituted with a cationic radical, and use of these derivatives for dyeing keratin fibers
4. 6923835 - Bis-para-phenylenediamine derivatives comprising a pyrrolidyl group and use of these derivatives for dyeing keratin fibres