Average Co-Inventor Count = 3.27
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. Sun Chemical Corporation (3 from 590 patents)
3 patents:
1. 7019121 - Process for conditioning azo pigments
2. 6537362 - Polyphosphoric acid swelling of organic pigments
3. 6402829 - Process for preparing a substantially pure gamma phase quinacridone pigment of large particle size