Average Co-Inventor Count = 2.18
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. Beecham Group Plc (4 from 855 patents)
4 patents:
1. 4315941 - Urazole analogs of prostaglandin derivatives
2. 4298745 - Hydantoin derivatives
3. 4237131 - Prostaglandin analogues
4. 4156730 - Pharmaceutically active compounds, preparation thereof, intermediates