Average Co-Inventor Count = 8.18
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. Pfizer Corporation (1 from 4,456 patents)
2. Pharmacia & Upjohn Company (1 from 523 patents)
3. Pharmacia Corporation (1 from 220 patents)
3 patents:
1. 7439397 - Phenol derivative
2. 7172769 - Cyclooxygenase-2 inhibitor compositions having rapid onset of therapeutic effect
3. 6890920 - Quaternary ammonium compounds