Average Co-Inventor Count = 2.57
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. Imperial Chemical Industries Limited (1 from 3,840 patents)
2. Zeneca Limited (1 from 854 patents)
3. Avecia Limited (1 from 106 patents)
3 patents:
1. 6723835 - Azopyridone compounds, compositions and use
2. 6290763 - AZO dyes and compositions comprising such dyes
3. 5189154 - Anionic phthalocyanine compounds