Average Co-Inventor Count = 7.50
ph-index = 3
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 (2 from 1,524 patents)
2. Merck Patent Gesellschaft MIT Beschrankter Haftung (2 from 1,248 patents)
3. Ciba-geigy Corporation (1 from 6,850 patents)
5 patents:
1. 5837746 - Coreactive photoinitiators
2. 5744512 - Coreactive photoinitiators
3. 5532112 - Coreactive photoinitators
4. 5071732 - Two-layer system
5. 4914004 - Two-layer system