Average Co-Inventor Count = 3.37
ph-index = 9
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. Clariant Corporation (10 from 480 patents)
2. Hoechst Aktiengesellschaft (8 from 6,662 patents)
3. Behringwerke Aktiengesellschaft (2 from 340 patents)
20 patents:
1. 6582508 - Process for fine division of organic pigments
2. 6548647 - Process for preparing azo colorants
3. 6537364 - Process for fine division of organic pigments by precipitation
4. 6312512 - Quinacridone mixed-crystal pigments of the gamma phase
5. 6251553 - Use of mixed-crystal pigments of the quinacridone series in electrophotographic toners and developers, powder coatings and inkjet inks
6. 6241814 - Process for preparing quinacridone pigments
7. 5989333 - Mixed crystal pigments of the quinacridone series
8. 5958129 - Pigment formulations and processes for their preparation
9. 5948910 - Water-soluble perylene dyestuffs, their preparation and their use
10. 5932727 - Process for the preparation of dioxazine compounds
11. 5800607 - Process for the preparation of liquid pigment preparations
12. 5755874 - Process for preparing linear unsubstituted .beta.-phase quinacridone
13. 5755872 - Process for preparing quinacridone pigments
14. 5746820 - Surface-treated quinacridone and dioxazine pigments
15. 5681876 - Pulverulent pigment preparation