Average Co-Inventor Count = 3.00
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. Pfizer Corporation (2 from 4,456 patents)
2 patents:
1. 5985912 - 4-hydroxy coumarin derivatives
2. 5624951 - 4-hydroxy coumarin derivatives with antibacterial activity