Average Co-Inventor Count = 8.00
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. Eisai R&d Management Co., Ltd. (3 from 528 patents)
2. Mercian Corporation (2 from 40 patents)
3. Merican Corporation (1 from 2 patents)
3 patents:
1. 7893068 - Physiologically active substances
2. 7619100 - Physiologically active substances
3. 7550503 - Physiologically active substances