Average Co-Inventor Count = 3.00
ph-index = 4
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. Chugai Seiyaku Kabushiki Kaisha (4 from 950 patents)
4 patents:
1. 7011825 - Erythropoietin solution preparation
2. 6627187 - Erythropoietin solution preparation
3. 6277367 - Erythropoietin solution preparation
4. 6120761 - Erythropoietin solution preparation