Average Co-Inventor Count = 4.44
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 (2 from 677 patents)
2 patents:
1. 5304381 - Stabilization of polyprenyl compound
2. 5093200 - Multilayer sustained release granule