Average Co-Inventor Count = 3.00
ph-index = 1
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. Clairol Incorporated (2 from 283 patents)
2 patents:
1. 5198584 - P-phenylenediamine substituted by a quaternary ammonium group and an
2. 5139532 - P-phenylenediamine substituted by a quaternary ammonium group and an