Average Co-Inventor Count = 3.08
ph-index = 4
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 Specialty Chemicals Corporation (6 from 1,524 patents)
2. Ciba Corporation (3 from 31 patents)
3. Basf Se Ludwigshafen (1 from 24 patents)
4. Basf Se Corporation (5,682 patents)
10 patents:
1. 7931696 - Cationic dyes
2. 7811335 - Styryl sulfide dyes
3. 7806940 - Cationic oligomeric azo dyes
4. 7803197 - Thiol derivative dyes
5. 7785375 - Pyrido thiazinium dyes
6. 7771490 - Dyes containing a thiol group
7. 7704284 - Xanthene dyes
8. 7482438 - Cationic imidazolazo dyes containing a 2,5-diaminophenyl moiety
9. 7476260 - Disulfide dyes, composition comprising them and method of dyeing hair
10. 7223295 - Method of coloring porous material