Average Co-Inventor Count = 8.31
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. Eisai Company, Limited (3 from 677 patents)
3 patents:
1. 4721788 - 4-cyanopiperidine derivatives
2. 4533494 - Process for purifying secretin
3. 4407745 - Heptacosapeptide