Average Co-Inventor Count = 2.40
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. Hoffmann-la Roche Inc. (2 from 4,942 patents)
2 patents:
1. 5516944 - Optically active phosphorous compounds
2. 5334766 - Process for the resolution of racemic diphosphine oxides