Average Co-Inventor Count = 12.00
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 (1 from 4,456 patents)
2. Pharmacia & Upjohn Company (1 from 523 patents)
2 patents:
1. 7439397 - Phenol derivative
2. 6890920 - Quaternary ammonium compounds