Average Co-Inventor Count = 2.00
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. Ciba-geigy Corporation (2 from 6,850 patents)
2. Ciba Specialty Chemicals Corporation (1 from 1,524 patents)
3 patents:
1. 5929216 - Benzothiazolium containing azo dyes useful for dyeing polyacrylonitrile
2. 5223626 - Preparation of cationic alkylenediamine dye intermediates
3. 5163972 - Process for the dyeing of polyacrylonitrile materials with cationic