Average Co-Inventor Count = 4.00
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. Other (1 from 832,891 patents)
2. Hans Schwarzkopf Gmbh & Co. Kg (1 from 10 patents)
2 patents:
1. 5990355 - Substituted diaminophenols, process for their preparation, and hair dyes
2. 5676706 - Substituted diaminophenols, and hair dyes containing such compounds