Average Co-Inventor Count = 2.86
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. Kowa Company Limited (2 from 591 patents)
2 patents:
1. 5290915 - Placenta-derived coagulation inhibitor
2. 4732891 - Placenta-derived anticoagulating substance, process for preparing same